• Title/Summary/Keyword: Current module

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An Development of Leakage Current Sensing Module of the System on Chip Type Under Consideration of Electromagnetic Interface in Power Trunk Line (전력간선에서의 전자파 장애를 고려한 원칩형 누설전류 원격 검출단말기의 개발)

  • Kim, Dong-Wan;Park, Ji-Ho;Park, Sung-Won
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.58 no.4
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    • pp.377-384
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    • 2009
  • In this paper, leakage current sensing module of SoC(System on Chip)type and real time monitoring system under consideration of electromagnetic interface in power trunk line are developed. The first, leakage current sensing module of SoC type under consideration of electromagnetic interface is developed, and the developed sensing module of SoC type is composed of leakage sensing part, power supply part, interface part, communication part, AD(Alternating current to Direct current)convert part and amplification part. And also the electromagnetic compatibility is evaluated by conduction and radiation of EMI(Electromagnetic Interference) for developed sensing module. The developed system can have confidence, stability and do energy saving under mixed electric circumstance of the low voltage communication device and high voltage equipment. The second, the real time remote monitoring system is developed using designed wire and wireless communication module with leakage current sensing module of SoC type. The developed real time remote monitoring system can monitor sensing state, occurrence state of leakage current and alarm for each step etc.. And the device configuration, PCB layout for leakage current sensing module of system on chip type and the experiment configuration in consideration of EMI are presented. Also the measurement results of conduction and radiation for EMI are presented.

Current Balance Controller for Parallel Boost Converter with Peak Current Mode Control (첨두전류모드 제어기로 구동되는 병렬 승압컨버터의 전류분배 제어기)

  • Park, Jong-Gyu;Jang, Eun-Sung;Kang, Sin-Chul;Shin, Yong-Hwan;Shin, Hwi-Beom
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.2
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    • pp.301-307
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    • 2009
  • In the paralleled converter module with peak current mode control, current imbalance appears when the voltage controllers with integral control of converter module are not exactly identical. In this paper, the voltage controller is designed to equal the current command of each converter module using the current command bus. The current balance controller is also proposed to balance the average currents of converter modules with imbalaced inductance. It is designed to have good transient response. Proposed method is implemented with the paralleled 2-module and 4-module boost converters with imbalanced inductance. Experimental results verify the performance of current share during both steady and transient states of converter.

High-Performance Metal-Substrate Power Module for Electrical Applications

  • Kim, Jongdae;Oh, Jimin;Yang, Yilsuk
    • ETRI Journal
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    • v.38 no.4
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    • pp.645-653
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    • 2016
  • This paper demonstrates the performance of a metal-substrate power module with multiple fabricated chips for a high current electrical application, and evaluates the proposed module using a 1.5-kW sinusoidal brushless direct current (BLDC) motor. Specifically, the power module has a hybrid structure employing a single-layer heat-sink extensible metal board (Al board). A fabricated motor driver IC and trench gate DMOSFET (TDMOSFET) are implemented on the Al board, and the proper heat-sink size was designed under the operating conditions. The fabricated motor driver IC mainly operates as a speed controller under various load conditions, and as a multi-phase gate driver using an N-ch silicon MOSFET high-side drive scheme. A fabricated power TDMOSFET is also included in the fabricated power module for three-phase inverter operation. Using this proposed module, a BLDC motor is operated and evaluated under various pulse load tests, and our module is compared with a commercial MOSFET module in terms of the system efficiency and input current.

The Effects of PV Cell's Electrical Characteristics for PV Module Application (태양전지의 전기적인 출력특성이 태양전지모듈에 미치는 영향)

  • Kim, Seung-Tae;Kang, Gi-Hwan;Park, Chi-Hog;Ahn, Hyung-Keun;Yu, Gwon-Jong;Han, Deuk-Young
    • 한국태양에너지학회:학술대회논문집
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    • 2008.11a
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    • pp.36-41
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    • 2008
  • In this paper, we study The Effects of PV Cell's Electrical Characteristics for PV Module Application. Photovoltaic module consists of serially connected solar cell which has low open circuit voltage and high short circuit current characteristics. The whole current flow of PV module is restricted by lowest current of one solar cell. For the experiment, we make PV module composing the solar cells that have short circuit current difference of 0%, 1%, 3% and Random. The PV module exposed about 35days, its the maximum power drop ratio was 4.282% minimum and 6.657% maximum. And PV module of low current characteristics has electrical stress from other modules. The solar cell temperature of PV module was higher compared to PV cell. To prevent early degradation, it is need to have attention to PV cell selection.

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Reconfiguration of PV Module Considering the Shadow Influence of Photovoltaic System (태양광 발전시스템의 그림자 영향을 고려한 PV 모듈의 재구성)

  • Ko, Jae-Sub;Chung, Dong-Hwa
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.27 no.2
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    • pp.36-44
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    • 2013
  • This paper proposes the reconfiguration of PV module considering shadow influence of photovoltaic system. The PV system is consisted series-parallel connection of PV module. The voltage and current between PV modules become unbalance when shadow occurs to PV module. If shadow occurs to the series connection PV module, the output current is limited to current of shaded PV module. Also if shadow occurs to the parallel connection PV module, the output voltage is limited to voltage of shaded PV module. These problems are caused power loss. Therefore, the PV module in this paper consist using the fixed module and variable module by shaded conditions. The reconfiguration of PV module can compensates the shadow influence by changing connection of a variable module when shadow is occurred to PV module. A validity of the reconfiguration of PV module proposed in this paper proves through comparing with performance of conventional PV module.

The electrical effects of PV cell's short-circuit current difference for PV module application (태양전지의 단락전류 편차가 태양전지모듈에 미치는 전기적인 영향 분석)

  • Kim, Seung-Tae;Park, Chi-Hong;Kang, Gi-Hwan;Ahn, Hyung-Keun;Han, Deuk-Young;Yu, Gwon-Jong
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2008.06a
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    • pp.3-4
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    • 2008
  • Photovoltaic module consists of serially connected solar cell which has low voltage characteristics. But, the other way, the whole current flow of PV module is restricted by lowest current of one solar cell. For the experiment, we make PV module composing the solar cells that have short circuit current difference of 0%, 1%, 3% and 5%. Using Light I-V and Dark I-V measurements, electrical characteristic parameters like Isc(short-circuit current), Voc(open-circuit voltage), Rs(series resistance), Rsh(shunt resistance) are analyzed. PV module of low current characteristics has electrical stress from other modules. And, such a module has a tendency of hot-spot suffering which leads degradation.

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Analysis on magnetizing characteristics of current limiting reactor using HTSC module

  • Han, Tae Hee;Lim, Sung Hun
    • Progress in Superconductivity and Cryogenics
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    • v.20 no.1
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    • pp.15-18
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    • 2018
  • In this paper, the magnetizing characteristics of the current limiting reactor (CLR) using $high-T_C$ superconducting (HTSC) module were analyzed. Since the saturation of iron core comprising the CLR using HTSC module deteriorates its current limiting operation, the design of the CLR using HTSC module considering the magnetizing characteristics is needed. For the analysis on the magnetizing characteristics, the flux linkage and the magnetizing current of this CLR using HTSC module were derived from its electrical equivalent circuit. Through the analysis on the linkage flux versus the magnetizing current, obtained from the short-circuit tests, the suppressing effect of the iron core's saturation was discussed.

A Study on Open-frame Type DC-DC Converter Module for Low-Voltage High-Current Applications (저전압 대전류용 개방형 DC-DC 컨버터 모듈에 관한 연구)

  • 안태영;황선민;조인호
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.52 no.4
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    • pp.183-190
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    • 2003
  • We report the performance of an open-frame type low-voltage high-current DC-DC converter module developed using an active clamp forward converter circuit and current doubler rectifier. The converter module is designed with the specifications of an 1.8V output voltage, 25A output current, and 36-75V input voltage. The synchronous rectifier is used to reduce the conduction fuss at high current level and current-mode control is adapted to enhance the flexibility in the system configuration. A prototype converter module is successfully implemented within 10mm height and half brick size (58${\times}$61mm), and recorded an 84% efficiency and 4% voltage regulation for the entire input voltage range, thereby demonstrating its application potentials to future telecommunication electronics.

A Study on Open-frame Type DC-DC Converter Module for Low-Voltage High-Current Applications (저전압 대전류용 개방형 DC-DC 컨버터 모듈에 관한 연구)

  • 안태영;황선민;조인호
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.52 no.4
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    • pp.183-183
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    • 2003
  • We report the performance of an open-frame type low-voltage high-current DC-DC converter module developed using an active clamp forward converter circuit and current doubler rectifier. The converter module is designed with the specifications of an 1.8V output voltage, 25A output current, and 36-75V input voltage. The synchronous rectifier is used to reduce the conduction fuss at high current level and current-mode control is adapted to enhance the flexibility in the system configuration. A prototype converter module is successfully implemented within 10mm height and half brick size (58×61mm), and recorded an 84% efficiency and 4% voltage regulation for the entire input voltage range, thereby demonstrating its application potentials to future telecommunication electronics.

Temperature Control of Aluminum Plate by PWM Current Control of Peltier Module (펠티어 소자의 PWM 전류제어를 이용한 알루미늄 판의 온도제어)

  • Pang, Du-Yeol;Kwon, Tae-Kyu;Lee, Seong-Cheol
    • Journal of the Korean Society for Precision Engineering
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    • v.23 no.10
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    • pp.60-67
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    • 2006
  • This paper presents the temperature control in aluminum plate with Peltier module. From the experimental work, Peltier module is used to control the temperature of small aluminum plate for both heating and cooling with the control of current and fan ON/OFF. And current control of Peltier module was accomplished by PWM method. As a result of experiments, it is proper that operate cooling fan only while cooling duration and there exist a proper cooling current to drop temperature rapidly. It takes about 125sec to control temperature of aluminium plate between $30^{\circ}C$ and $70^{\circ}C$ and about 70sec between $40^{\circ}C$ and $60^{\circ}C$, in ambient temperature $28^{\circ}C{\sim}29^{\circ}C$ while cooling fan is operated only cooling duration. With the cooling current, temperature control of aluminum plate was accomplished more rapidly in comparison without cooling current. Future aim is to realize more rapid temperature control and develop SMHA(special metal hydride actuator) by using Peltier module as a heating and cooling source.