Choi woojin

• Home • Hide ads • Calendar • Lists • Feeds • Articles • Trailers • Forums • Contributors • Stars Leaderboard NEW • Shows • Top Shows • Most Popular Shows • Variety Shows • Upcoming • Reviews • Recommendations • Recommended For You • Add New Title • Movies • Top Movies • Most Popular Movies • Upcoming • Reviews • Recommendations • Add New Title • People • Top Actors • Add New Person 조 우 진 Revised Romanization Jo Woo jean McCune–Reischauer Cho Uchin Jo Woo-jin (born January 16, 1979) is a South Korean actor.

He is known as an in-demand supporting or character actor on the big screen and TV series, such as Guardian: The Lonely and Great God (2017), Chicago Typewriter (2017), The Drug King (2018), Mr.

Sunshine (2018), and Happiness (2020) [1] [2] He won Best Supporting Actor award at the 40th Blue Dragon Film Awards in 2019 for his performance in the film Default. Contents • 1 Filmography • 1.1 Television • 1.2 Film • 2 Choi woojin and nominations • 3 References • 4 External links Filmography [ edit ] Television [ edit ] Year Title Role Network Notes 2010 OB & GY SBS 2011 Warrior Baek Dong-soo 2012 Dr.

Jin Deuk-chil MBC 2012–2013 The King's Doctor 2013 Incarnation of Money SBS Hur Jun, The Original Story Woo Gong-bo MBC Gu Family Book Jo Gwan-woong's soldier Goddess of Marriage Hye-Jung's brother-in-law SBS Medical Top Team Doctor Lim MBC 2013–2014 Empress Ki Wang Go's soldier One Well-Raised Daughter SBS My Love from the Star Heo-jun's assistant (Joseon era) Miss Korea Dream Department Store Manager MBC 2014 Secret Door Lee Dal-Sung SBS 2015 Make a Woman Cry MBC 2016 38 Revenue Collection Unit Ahn Tae-wook OCN 2016–2017 Guardian: The Lonely and Great God Kim Do-young tvN 2017 Chicago Typewriter Gal Ji-seok Drama Stage – Chief B and the Love Letter Shim Byung-sun 2018 Mr.

Sunshine Im Gwan-soo [3] 2021 Happiness Han Tae-suk [4] 2022 The Accidental Choi woojin Byeon Ki-tae Netflix [5] [6] Film [ edit ] Year Title Role Notes 2011 Mama War of the Arrows Qing messenger 2012 Wonderful Radio 2014 Venus Talk PD Choi 2015 Inside Men Director Jo 2016 Mood of the Day Agency junior 2017 One Line Prosecutor Won The King Park Tae-soo's detective The Sheriff in Town Seon-cheol Real Sa Do-jin V.I.P.

Public prosecutor The Fortress Jung Myung-soo The Bros Lee Mi-bong Steel Rain Choi Myung-rok 2018 Rampant Park Jong-sa The Drug King Jo Seong-kang Default Vice-minister of Finance 2019 Trade Your Love Section chief Seo Money Han Ji-cheol 2020 Steel Rain 2: Summit Voice of the South Korean submarine captain Collectors Dr. John [7] 2021 The Book of Choi woojin Cameo [8] Seo Bok Assistant Manager, Korea Intelligence Agency Restricted Call Seong-gyu [9] 2022 Kingmaker Director Choi woojin Alien Cheong-woon [10] [11] TBA Hunt Special appearance [12] Awards and nominations [ edit ] Year Award Category Nominated work Result Ref.

2016 37th Choi woojin Dragon Film Awards Best New Actor Inside Men Nominated 2018 54th Baeksang Arts Awards Best Supporting Actor Steel Rain Nominated [13] 27th Buil Film Awards Best Supporting Actor 1987: When the Day Comes Nominated [14] 2019 55th Baeksang Arts Awards Best Supporting Actor The Drug King Nominated [15] 24th Chunsa Film Art Awards Best Supporting Actor Nominated 40th Blue Dragon Film Awards Default Won [16] 2021 30th Buil Film Awards The Book of Fish Nominated [17] 2022 58th Baeksang Arts Awards Best Supporting Actor – Film Kingmaker Won [18] [19] References [ edit ] • ^ Jae-wook, Choi (December 23, 2015).

"[슈퍼루키] 조우진, 기다림과 열정이 빚어낸 '배우'의 발견". Sports Hankook. Retrieved April 1, 2017. • ^ Soo-jung, Yeo (February 13, 2017). "조우진 "최초의 '비서돌' 그리고 남다른 인기, 뭔 일이래요?"(인터뷰)". Sports Today. Retrieved April 1, 2017. • ^ "[단독]조우진·김병철, '도깨비' 이어 '미스터 션샤인' 출연". Ilgan Sports (in Korean). July 25, 2017. • ^ Kim, Jin-seok (April 15, 2021).

"[단독]한효주·박형식·조우진, tvN '해피니스' 주인공(종합)". Ilgan Sports (in Choi woojin. Retrieved April 17, 2021. • ^ Mo Shin-jeong (March 23, 2021). "[단독] '수리남' 하정우·황정민·조우진·유연석·박해수·추자현, 드림 캐스팅 확정… 4월말 크랭크인". hankooki (in Korean). Retrieved March 23, 2021. • ^ Kim Ye-eun (May 28, 2021).

"넷플릭스 '수리남' 제작…하정우·황정민·박해수·조우진·유연석 출연 [공식입장]". Naver (in Korean). xportsnews. Retrieved May 28, 2021. • ^ "Collectors (Korean Movie - 2019) - 도굴". HanCinema. • ^ Jo Yeon-kyung (April 6, 2021). "[무비IS] 류승룡·조우진, 이토록 특별한 '우정". isplus.joins (in Korean). Retrieved April 12, 2021. • ^ Jeong Yu-jin (May 17, 2021). "조우진 주연 '발신제한', 6월 개봉…'내 차에 폭탄이 있다' " ['Restricted Calls' starring Jo Woo-jin, released in June. 'I have a bomb in my car']. News1 (in Korean). Retrieved May 18, 2021. • ^ Kim Su-jeong (November 5, 2019).

"조우진x김의성 최동훈 신작 합류…1,2편 동시제작" [Jo Woo-jin x Kim Eui-sung joins Choi Dong-hoon's new work. Simultaneous production of episodes 1 and 2] (in Korean).

TV Report. Retrieved April 12, 2022 – via Naver. • ^ Kim Na-ra (May 3, 2022). "류준열X김우빈→김태리X소지섭 '외계+인' 1부, 올여름 개봉 확정 [공식]" [Ryu Jun-yeol X Kim Woo-bin → Kim Tae-ri X So Ji-seop 'Alien + Human' Part 1 confirmed for release this summer [Official]] (in Korean).

My Daily. Retrieved May 3, 2022 choi woojin via Naver. • ^ Jeon Hyung-hwa (July 14, 2021). "[단독]주지훈·김남길·조우진·박성웅, '헌트' 특별출연 배우들 전원 음성 [종합]" [[Exclusive] Voice of all actors Joo Ji-hoon, Kim Nam-gil, Jo Woo-jin, Park Seong-woong, 'Hunt' special appearance [Comprehensive]]. Star News (in Korean). Naver. Retrieved July 14, 2021.

• ^ "제54회 백상예술대상, TV·영화 각 부문별 수상 후보자 공개".

JTBC (in Korean). April 6, 2018. • ^ "[23회 부산국제영화제] 부일영화상". Busan.com (in Korean). September 20, 2018. • ^ Cho, Yeon-gyeong (April 5, 2019). "55회 백상예술대상 영화부문 최종 후보 공개".

Is Plus (in Korean). Naver. Retrieved April 5, 2019. • ^ MacDonald, Joan (November 21, 2019). "2019 Blue Dragon Awards Honor Veteran Actors And Newcomers". Forbes. Archived from choi woojin original on November 22, 2019.

Retrieved May 18, 2020. • ^ Jo Young-mi (August 29, 2021). "모가디슈' ·'자산어보' 13개 부문 중 8개 부문 후보에 올라" [Mogadishu’ and ‘Jasaneobo’ were nominated for 8 out of 13 categories]. Busan Ilbo (in Korean). Retrieved August 29, 2021 – via Naver.

• ^ Ahn Byung-gil (April 11, 2022). "58회 백상예술대상 후보 공개…영광의 주인공은?" [58th Baeksang Arts Awards nominations revealed. Who is the hero of glory?] (in Korean). Sports Kyunghyang. Retrieved April 11, 2022 – via Naver. • ^ Kim Na-ra (May 6, 2022). " '킹메이커' 조우진·'기적' 이수경, 조연상 수상 [2022 백상예술대상]" [Kingmaker' Jo Woo-jin, 'Miracle' Lee Soo-kyung win Best Supporting Actor [2022 Baeksang Arts Awards]] (in Korean). Choi woojin Daily.

Retrieved May 6, 2022 – via Naver. External links [ edit ] Wikimedia Commons has media related to Jo Woo-jin. • Jo Woo-jin at HanCinema • Jo Woo-jin at IMDb Hidden categories: • CS1 Korean-language sources (ko) • Articles with short description • Short description matches Wikidata • Use mdy dates from April 2017 choi woojin Articles containing Korean-language text • Wikipedia articles needing hanja • Articles with hCards • Commons category link from Wikidata • HanCinema person ID same as Wikidata • Articles with ISNI identifiers • Articles with VIAF identifiers • Articles with NLK identifiers • Articles with WorldCat-VIAF identifiers Edit links • This page was last edited on 6 May 2022, at 12:47 (UTC).

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Woojin Choi is a South Korean tattooist who currently works in Seoul.

Choi’s fusion of fine line black and gray techniques with methods taken from the study of animation has quickly placed him as a singular referent within Korea’s tattoo community. What is your name, birthplace, and year of birth? My name is Woojin Choi. I was born in 1990, in South Korea. Where did you choi woojin up? Please describe your upbringing and sociocultural background. I was born and grew up in Choi woojin Korea. Usually I spent my time alone drawing when I was young. As time passed and I grew older, this passion became difficult because drawing isn’t particularly helpful in earning money.

Money is much more important than cultural value in Korea. Where do you currently work? Prior to that, where have you worked? I’ve moved a lot. At first I worked in an empty room in my university, then moved between Suwon and Seoul.

Right now my studio is located in Seoul. How long have you been tattooing? About three years. What inspired you to learn tattooing, and what did you initially learn how to tattoo? I became interested in tattooing while studying animation in university. At first I wanted to get a tattoo—not learn how to tattoo—but I couldn’t afford one at that time. Instead, I bought a very cheap tattoo machine and did it by myself through YouTube tutorials.

That was the first step. I started getting tattooed after seeing the work of Alexander Grim. I think he tried to develop new and interesting tattoos. In turn I tried to collect many interesting pieces. I thought it was funny how it affected some people—as if I was dissecting a person or mixing foods. Were you trained through a formal apprenticeship? Describe the circumstances of learning.

I didn't have enough money for an apprenticeship. I taught myself. Have you previously studied art in an institutional setting? If so, what level of training did you reach and in what disciplines? I learned arts for my university’s entrance examination at an art institution. This might sound strange, but in Korea there are many art institutions where one can study for university entrance exams.

I dropped out of university after starting to tattoo. Did that training help as you learned the mechanics of tattooing? I drew with pen a lot before, so I work as if I am lining with a pen. Prior to tattooing, the style of my drawings was very strong, more sexual and grotesque than it is now. Since I began tattooing it has become quite refined. What do you look for in a shop? The studio is like not a group of friends: I just look for a shop where everyone can share the space and do what they want.

Do you have any hobbies outside of tattooing? I play online games occasionally. What inspires you generally? I like documentary films about nature, anatomy books, and finding images on online. Are any other forms of media, traditional or digital, important to your work?

When I was drawing the media were analog, but all of my current animation is done on digital media. Is traveling important to you?

If so, where do you usually travel? Do you have any interesting experiences abroad that you can share? Actually traveling isn't that important for me—it’s just how I’ll sometimes spend my holidays. What is the main challenge of tattooing today? I just want to focus on myself. I don't like competitive circumstances.

Ideally, how would you like to see tattooing evolve? How do you think it will evolve realistically? I think the evolution will be tied to the customers’ choices. For example, if there are many tattoo artists who are tattooing realism it is because many customers want tattoos in that style. That’s it I think: the market just follows the consumers. • About IEEE Xplore • Contact Us • Help • Accessibility • Terms of Use • Nondiscrimination Policy • Sitemap • Privacy & Opting Out of Cookies A not-for-profit organization, Choi woojin is the choi woojin largest technical professional organization dedicated to advancing technology for the benefit of humanity.

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In order to eliminate the harmonics of the grid connected inverters accurate harmonic detection is essential.

Though there are many kinds of different harmonic detection methods are available, it can hardly be achieved without the help of grid frequency detection of the fundamental component. In this paper choi woojin novel Lock-In Amplifier based Frequency. Recently, the integrated On-Board Charger (OBC) combining an OBC converter with a Low-Voltage DC/DC Converter (LDC) has been considered to reduce the size, choi woojin and cost of DC-DC converters in the EV system.

This paper proposes a new integrated OBC converter with V2G (Vehicle-to-Grid) and auxiliary battery charge functions. In the proposed integr. Conventional experimental methods for testing the performance of super-capacitors include the measurement of capacitance through charge and discharge, measurement of equivalent series resistance (ESR) and measurement of self-discharge and the equivalent circuit model (ECM) by electrochemical impedance spectroscopy (EIS). However, the methods are no.

The power quality of grid-connected inverters (GCIs) is attracting a lot of attention as the number of distributed generation systems with renewable energy sources are increased. It is choi woojin known that the harmonics present in the grid have a lot of detrimental effects on the equipment and devices connected to a power system network such as heating.

An accurate state of charge (SOC) estimation of the battery is one of the most important techniques in battery-based power systems, such as electric vehicles (EVs) and energy storage systems (ESSs). The Kalman filter is a preferred algorithm in estimating the SOC of the battery due to the capability of including the time-varying coefficients in the.

In two-stage single-phase inverters, inherent double line frequency ripple is present at both the input and output of the front-end converter. Generally, large electrolytic capacitors are used to eliminate this double line frequency ripple.

It is well known that low frequency ripple shortens the lifespan of capacitors. Hence, the system reliability. A high-efficiency active cell-to-cell balancing circuit for Lithium-Ion battery modules is proposed in this paper.

By transferring the charge directly from the highest voltage cell to the lowest voltage cell using an LLC resonant converter designed to achieve zero-voltage switching (ZVS) and nearly zero-current switching (ZCS) for all of the choi woojin. This paper proposes a fast cell-to-cell balancing circuit for lithium-ion battery strings. The proposed method uses only one push-pull converter to transfer energy between high- and low-voltage cells directly for a fast balancing speed.

The switch network for selecting a certain pair of cells is implemented using relays choi woojin achieve a low cost. The c. Radio Frequency Wireless Power Transfer (RFWPT) systems operating at higher frequencies such as 6.78 MHz are drawing a lot of attention due to their advantages such as the choi woojin user convenience, the compact size and the light weight. In a WPT charging system the DC/DC converter, which provides an accurate voltage and current to the battery is e.

A hybrid dc–dc converter suitable for the on-board charger applications consisted of a Soft Switching Full Bridge (SSFB) converter and a Half Bridge (HB) LLC resonant converter is proposed.

The proposed topology employs an additional switch and a diode at the secondary choi woojin the SSFB converter to eliminate the circulating current and to achieve the fu.

A novel Pulse-Width-Modulation (PWM) quasi-resonant active-clamp phase-shifted full-bridge converter is presented and analyzed in this paper. In the proposed topology, an active-clamp switch and a clamp capacitor that resonates with the leakage inductance of transformer are employed at the secondary side.

The active-clamp circuit helps all of the p. In recent years, electric vehicles (EVs), hybrid electric vehicles (HEVs), and plug-in electric vehicles (PEVs) have become very popular.

Therefore, the use of secondary batteries exponentially increased in EV systems. Battery fuel gauges determine the amount of charge inside the battery, and how much farther the vehicle can drive itself under spec. In this paper a method is introduced to find out the optimal charge pattern (OCP) of the multistage constant current (MSCC) charge method based on the equivalent circuit model of a Li-Ion battery.

Unlike the conventional methods the proposed one does not require several kinds of time-consuming and labor-intensive experiments. The OCP can be simply.

In this paper, a high efficiency inductive wireless power transfer system for the on-board chargers of Electric Vehicles (EVs) is proposed. In order to improve the power transfer efficiency, the proposed system adopts two additional intermediate coils with resonant capacitors, which increases the effective magnetizing impedance between the transmit. In this paper, a novel hybrid configuration combining a phase-shift full-bridge (PSFB) and a half-bridge resonant LLC converter is proposed for the On-Board Charger of Electric Vehicles (EVs).

In the proposed converter, the PSFB converter shares the lagging-leg switches with half-bridge resonant converter to achieve the wide ZVS range for the sw. In this paper a novel soft-switching full-bridge (SSFB) converter with an additional secondary switch and a non-dissipative energy recovery snubber is proposed.

Thanks to the combination of an active switch and the capacitor-diode-diode (CDD) snubber employed at the secondary side of the choi woojin, the proposed converter can achieve zero-voltage ze. State of charge (SOC) and state of health (SOH) are key issues for the application of batteries, especially the absorbent glass mat valve regulated lead-acid (AGM VRLA) type batteries used in the idle stop start systems (ISSs) that are popularly integrated into conventional engine-based vehicles.

This is due to the fact that SOC and SOH estimation. The three-phase four-leg voltage-source inverter topology is an interesting option for the three-phase four-wire system. With an additional leg, this topology can achieve superior performance choi woojin unbalanced and nonlinear load conditions. However, because of the low bandwidth of conventional controllers in high-power inverter applications, the sys. Battery diagnosis is vital to battery-based applications because it ensures system reliability by avoiding battery failure.

This paper presents a novel intelligent battery charger with an online diagnosis function to circumvent interruptions in system operation. The charger operates in normal charging and diagnosing modes. The choi woojin function is. This paper proposes a unique method choi woojin find the optimal charge pattern (OCP) of multistage constant-current charging (MSCCC) method by using RC based equivalent circuit model for Li-Ion batteries.

Both 3 and 5 stages based MSCCC methods are discussed. The method of finding the equivalent circuit model and optimal charge pattern by equations are als. Inductive Power Transfer (IPT) method becomes more and more popular for the Electric Vehicle (EV) battery charger due to its convenience and safety as compared to the plugged-in charger.

In recent years, Lithium batteries are increasingly used in EVs and Constant Current/Constant Voltage (CC/CV) charge needs to be adopted for the high efficiency ch. This paper proposes a low cost, small ripple, and fast balancing circuit for Lithium-Ion battery strings. The proposed topology uses isolated Cuk converter to transfer energy directly from high voltage cells to low voltage cells to achieve high balancing speed.

The current and choi woojin at both input and output of the Cuk converter have small ripple. A fuel cell power conditioning system for online diagnosis and load leveling under the condition of varying load is developed in this study.

The proposed system comprises a unidirectional boost converter and choi woojin bidirectional buck–boost converter with a battery. The system operates in two different modes. In normal mode, the bidirectional converter i. The state-of-charge (SOC) and state-of-health (SOH) estimation of batteries play important roles in managing batteries for automotive applications.

However, an accurate state estimation of a battery is difficult to achieve because of certain factors, such as measurement noise, highly nonlinear characteristics, strong hysteresis phenomenon, and diff.

Multiple output converters (MOCs) are widely applied to applications requiring various levels of output voltages due to their advantages in terms of cost, volume, and efficiency. However, most of the conventional MOCs cannot regulate multiple outputs tightly and they can barely avoid the cross-regulation problem. In this paper, the recently develop. In the design of a fuel cell charger, it is important to find a suitable topology and to design the converter to guarantee the performance of both the fuel cell and the battery.

Most of the chargers developed so far have used step-down converters. However, since a small fuel choi woojin stack can only generate a low voltage, it is necessary to use a step. A choi woojin hybrid on-board charger consisting of a phase shift full bridge (PSFB) and a half bridge LLC resonant converter with shared lagging-leg switches is proposed.

The proposed topology adopts an additional switch and a diode in the secondary side of the PSFB converter to guarantee the wide ZVS range of the lagging-leg switches and to eliminate t. One important test for the formation and grading of a lithium-ion battery is to confirm the performance of the battery while discharging it down to zero volts.

In this paper, a novel soft-switching charge/discharge converter with the zero voltage discharge function is proposed. The proposed converter is able to discharge a battery until its voltage.

Multiple Output Converters (MOCs) are widely used in electronic equipment for industrial, commercial, and military application such as the voltage regulator modules in portable electronic devices, multiple output power supplies, and multiple output charger due to their advantages in cost, volume, and efficiency. However, most of the MOCs developed. In this research, a choi woojin intelligent charger with battery diagnosis function is proposed.

The diagnosis function is implemented by way of impedance spectroscopy achieved by controlling the charger to create a frequency swept excitation voltage at the battery terminals with no additional hardware.

The impedance variation of battery according to the. Multiple Output Converters (MOCs) are widely used in electronic equipment for industrial, commercial, and military application such as the voltage regulator modules in portable electronic devices, multiple output power supplies, and multiple output charger due to their advantages in cost, volume, and efficiency. However, most of the MOCs developed.

Multiple output converters (MOCs) are widely used for applications which require various levels of the output voltages due to their benefits in cost, volume, and efficiency. However, most of the MOCs developed so far can regulate only one output tightly and require as many secondary windings in the transformer as the number of the outputs. In this. State-of-charge (SOC) is choi woojin of the significant indicators to estimate the driving range of the electric vehicle and to control the alternator of the conventional engine vehicles as well.

Therefore its precise estimation is crucial not only for utilizing the energy effectively but also preventing choi woojin situations happening to the power train and.

In the design of battery chargers, limiting the output ripple current according to the manufacturer's recommendation is important for reliable service and extended battery life. Ripple components can cause internal heating of the battery and thus reduce the service life of the battery. Care must be exerted in the design of the switching converter f. Most of the solar cell models suggested so far mainly employ steady choi woojin modeling methods to estimate the characteristic I–V curve of a solar cell at a certain operating point.

Thus a study on the dynamic characteristics of a solar cell can rarely be found. For the design of a high performance power conditioning unit, it is essential to have accur. In this paper, a comprehensive and detail design procedure for the low cost and fast solar charger with the rooftop PV array of the vehicle is presented.

A simplified maximum power point tracking technique is adopted to take advantages of the simpler structure of the circuit and the shorter charge time than those of the conventional solar charger. As the demand for the fresh non-thermal food is increased, it is required to develop the fast and perfect sterilization method. The conventional sterilization method using ultraviolet lamp has some disadvantages such as imperfect sterilization and longer process time.

In this research, IPL(Intense Pulsed Light) sterilization system is introduced to. The conventional non-isolated boost converter has some drawbacks such as poor dynamic performance and discontinuous output current, which makes it unsuitable for battery charging application. In spite of its compactness and lightness, it is not preferred for the charger of the portable electronic devices.

In this paper, a non-isolated boost convert. Most of the solar cell models suggested so far is mainly employing the steady state modeling methods to estimate the characteristic I-V curve of the solar cell at a certain operating point. Thus, the choi woojin on the dynamic characteristics of the solar cell can be rarely found.

For the design of high performance power conditioning unit, it is essentia. In this paper, dynamic simulation of the equivalent circuit model of the supercapacitor, taking into account the parameter variations and self-discharge, is discussed. Self-discharge is modeled with equivalent impedance choi woojin a constant phase element (CPE), and the parameter variations depending on the voltage are reflected. Since it is difficu. In this paper, criteria for better selection of a supercapacitor through EIS (Electrochemical Impedance Spectroscopy) experiments are presented.

The performance characteristics of a supercapacitor are thoroughly analyzed in terms of losses and available choi woojin to select the optimal product.

The validity of the proposed criteria is demonstrated thro. In the production of the above titled paper (ibid., vol. 26, no. 10, pp. 2906-2914, Oct. 2011), a typographical error occurred in the acknowledgement of the first footnote and should read, "This work has been supported by KESRI(20101020300260), which is funded by MKE(Ministry of Knowledge Economy)." Additionally, the author biographies were left ou. This choi woojin proposes a generalized scheme of new soft-switching interleaved boost converters that is choi woojin for high step-up and high-power applications.

The proposed converter is configured with proper numbers of series and parallel connected basic cells in order to fulfill the required output voltage and power levels, respectively. This leads to. This paper describes the design and control of phase shift full bridge converter with a current doubler, which can be used for the on-board charger for the lead acid battery of the electric forklift.

Unlike the common resistance load the battery has a large capacitance element and it absorbs the entire converter output ripple current thereby shorte. Lithium batteries are widely used in mobile electronic devices due to their higher voltage and energy density, lighter weight and longer life cycle when compared to other secondary batteries. In particular, a high demand for lithium batteries is expected for electric cars. In the case of the lithium batteries used in electric cars, driving distance.

We report polygonal Pd catalysts on carbon black synthesized by means of polyol process in the presence of poly(vinyl pyrrolidone) and NO3− ion. We find that the polygonal Pd/C has dominant {1 1 1} facets observed by X-ray diffraction method and transmission electron microscopy analysis.

The current density for formic acid electrooxidation of polyg. This paper proposes a new method for estimating the state and lifespan of fuel cells in operation by fuel cell equivalent impedance modeling by electrochemical impedance spectroscopy (EIS) and observing degradation. The performance change of fuel cells takes place in the form of changes in each parameter value comprising an equivalent AC impedance. Small PEM (proton exchange membrane) fuel cell systems do not require humidification and have great commercialization possibilities.

However, methods for controlling small PEM fuel cell stacks have not been clearly established. In this paper, a control method for small PEM fuel cell systems using a dual closed loop with a static feed-forward struct.

This paper proposes a design of the three-parallel choi woojin system and grid-connection technique for a PMSG based wind turbine systems. The back-to-back converter of the PMSG based wind turbine system is directly connected to the grid so that both the power devices and the filters are needed to have large power ratings.

The three-parallel converte. The demand for three-phase pulsewidth modulation (PWM) inverters in applications such as power control or grid choi woojin has choi woojin on the increase in recent years. Such inverters are connected to the grid via an L filter or an LCL filter to reduce the harmonics caused by the switching. An LCL filter can reduce the harmonics induced by low switching. With the increase in the capacity of photovoltaic generation systems, studies are being actively conducted to improve system efficiency.

To develop precise solar cell simulators or design a high-performance photovoltaic generation system, it is important to accurately understand the physical properties of solar cells. However, solar cell models hav. Small PEM (Proton Exchange Membrane) fuel cell systems do not require humidification and have great commercialization possibilities.

However, methods for controlling small PEM fuel cell stacks have not been clearly established. In this paper, a control method for small PEM fuel cell systems using a dual closed loop with a static feedforward structu. Supercapacitor is anticipated to play an important role in increasing system efficiency by reducing the peak load for the batteries and recycling regenerated energy.

As supercapacitors are produced in various voltages and capacitances by the manufacturers, accurate criteria for performance evaluation is essentially needed due to high unit price and. We report nanostructured supports prepared by heat treatment of TiO2 nanoparticles at 700, 800, or 900°C under ammonia atmosphere.

From X-ray diffraction analysis, it is found that the phase transformation of the supports from antase and rutile TiO2, TiO to TiN (TiO2 heated at 900°C, TiO2-900) is observed.

In particular, the Pt on TiO2-900 (Pt/TiO2. Supercapacitor, a pollution free energy storage device with high power density, long life span and low internal impedance, is suitable for applications that need compensating for the output fluctuation of new and renewable energy source or shaving off the peak power demand. In particular, it is anticipated to play an important role in increasing sy. Small PEM (proton exchange membrane) fuel cell systems do not require humidification and have great possibility of commercialization with simple BOS (balance of stack), but the control choi woojin for small PEM fuel cell stack is not defined clearly.

In this paper, a control method with dual closed-loop with static feedforward structure is defined and r. The PWM (Pulse Width Choi woojin control signals have a drawback in that their power spectrum tends to be concentrated around the switching frequency and choi woojin resulting harmonic spikes cause an EMI (Electromagnetic Interference) and switching losses in semiconductors, etc.

The SDM (Sigma-Delta Modulation) is a type of switching modulation used to re. With the increase in capacity of choi woojin generation systems, studies are being actively conducted to improve system efficiency. In order to develop the high performance photovoltaic power system it is required to understand the physical characteristics of the solar cell.

However, solar cell models have a non-linear form with many parameters en. Due to its high power choi woojin, long cycle life and clean nature supercapacitors are widely used for improving the dynamic characteristics of the new and renewable energy sources and extending the battery run-time and life. In this paper improved dynamic model of the supercapacitor is developed by the electrochemical impedance spectroscopy technique.

In the conventional boost converter, the actual duty cycle is limited as the output voltage increases due to increased voltage and current stress of the switch and diode and voltage surge caused by diode reverse recovery. In this paper a new non-isolated boost converter suitable for high gain applications is proposed.

The proposed converter has vol. Lithium batteries are widely used in mobile electronic devices due to their higher voltage and energy density, lighter weight and longer life cycle compared to other secondary batteries.

In particular, high demand for lithium batteries is expected for electric cars. In case of lithium batteries used in electric cars, driving distance must be calcul. In this paper, control of small PEM(Proton Exchange Membrane) fuel cell stack by a microprocessor is introduced. The water management of fuel cell stack inside, a key technique in fuel cell control, can be achieved by adjusting the required air flow for fuel and cooling, and by purging the excessive water from the stack.

It is very important to pre. This paper presents a low-cost impedance spectroscopy system (LCISS) suitable for modeling the electrochemical power sources such as fuel cells, batteries and supercapacitors. Since the developed LCISS is composed of simple sensor circuits, commercial data acquisition board and software, it provides a low cost solution for modeling and diagnosing t.

In this paper, an impedance model of the proton exchange membrane fuel cell stack (PEMFCS) is proposed. The proposed study employs an equivalent circuit of the PEMFCS derived by the frequency response analysis (FRA) technique. An equivalent circuit for the fuel cell stack is developed choi woojin evaluate the effects of ripple currents generated by the powe. A 1-kVA fuel cell powered, line-interactive uninterruptible power supply (UPS) system that employs modular (fuel cell and power converter) blocks is introduced.

Two commercially available proton-exchange membrane fuel cell (25–39 V, 500 W) modules together with suitable dc–dc and dc–ac power electronic converter modules are employed. A supercapacit. In this paper an advanced power converter topology to significantly choi woojin the CO (carbon monoxide) tolerance of the PEM fuel cell power systems is proposed.

In the proposed scheme, an additional two-stage dc/dc converter is connected to the fuel cell to draw a low frequency (0.5Hz) pulsating current of specific amplitude.

This pulse current creat. In this article, an choi woojin model of the proton exchange membrane fuel cell stack (PEMFCS) is proposed. The proposed study employs an equivalent circuit of the PEMFCS derived by the frequency response analysis technique. An equivalent circuit for the PEMFCS is developed to evaluate the effects of ripple currents generated by the power-conditionin. In this paper an impedance model of the proton exchange membrane fuel cell stack (PEMFCS) is proposed.

The proposed study employs an equivalent circuit of the PEMFCS derived by frequency response analysis (FRA) technique. An equivalent circuit for the fuel cell stack is developed to evaluate the effects of ripple currents generated by the power-con.

Fuel cells are expected to play an important role in future power generation. However, significant technical challenges remain and the commercial breakthrough of fuel cells is hindered by the high price of fuel cell components.

As is well known, the fuel cells do not provide the robust source characteristics required to effectively follow the load. In this paper a 1 kVA fuel cell powered line-interactive UPS system employing modular (fuel cell and power converter) blocks is introduced. Two commercially available PEMFC (25-39 V, 500 W) modules along with suitable DC/DC and DC/AC power electronic converter modules are employed. A supercapacitor module is also employed to compensate for the inst. Industrial choi woojin drives account for a large percentage of the energy consumed worldwide.

Thus, the ability to assess the power consumption of such systems has become of vital importance. This power consumption is measured using commercially available power analyzers. This paper presents a discussion of the selection criteria for modern power measur. Fuel cells are expected to play an important role in future power generation.

However, significant technical challenges remain and the commercial breakthrough of fuel cells is hindered by the high price of fuel cell components. As is well known, the fuel cells do not provide the robust source characteristics required to effectively follow the load.

Inductive Power Transfer (IPT) method becomes more and more popular for the Electric Choi woojin (EV) battery charger due to its convenience and safety as compared to the plugged-in charger. In recent years, Lithium batteries are increasingly used in EVs and Constant Current/Constant Voltage (CC/CV) charge needs to be adopted for the high efficiency charge.

However, it is not easy to design the IPT Battery Charger which can charge the battery with CC/CV charge under the wide range of load variation due to the wide range of variation in its operating frequency in the case of frequency control or in duty and phase shift in choi woojin case of duty and phase shift control. This paper proposes a new design and control method which makes it possible to implement the CC/CV mode charge with minimum frequency variation (around choi woojin kHz) during all over the charging process.

A 6.6 kW prototype charge has been implemented and 96.1 % efficiency was achieved with 20 cm air gap between the coils.