Use of a Series Voltage Compensator for Reduction of the DC-Link Capacitance in a Capacitor-Supported System

Wang, Huai; Chung, Henry Shu-Hung; Li, Wenchao

doi:10.1109/tpel.2013.2262057

Cited by 201 publications

(16 citation statements)

References 18 publications

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“…The high voltage operation of these circuits has a negative effect on the dynamic performance of DC-link. In [13], the authors examine the switching conditions to minimize the current fluctuation of the output capacitor and reduce the fluctuation value by changing the switch states during the fluctuation. In [14], a series voltage compensator technique is presented for the capacitor supported system.…”

Section: Di2mentioning

confidence: 99%

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Minimizing Capacitance Value of Interleaved Power Factor Corrected Boost Converter for Battery Charger in Electric Vehicles

Turksoy¹,

Yılmaz²,

Teke³

2019

ELEKTRON ELEKTROTECH

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A dynamic voltage compensator (DVC) technique is presented for the minimizing of the capacitance value of the interleaved power factor corrected (PFC) boost converter for the battery charger in electric vehicles. This technique is based on eliminating the ripple on the capacitor by creating a voltage in the opposite direction as well as the amount of ripple on the capacitor. With the proposed method, the capacitance value is reduced by approximately five times. Reducing the size of the capacitor also provides the use of film-capacitors with a longer life. The other contribution of this study is designing a faster and more stable fully-digital control system, instead of the commonly used analogue controller of interleaved PFC boost converter. A 3.3 kW interleaved PFC boost converter is designed to verify the effect of the designed dynamic voltage compensator and digital controller.

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Section: Di2mentioning

confidence: 99%

“…bat conv II (13) Voltage ripple of the DC-link capacitor depends on the integral of the difference between the output current of the converter and the battery current. This is expressed as:…”

Section: B Proposed Dynamic Voltage Compensator (Dvc)mentioning

confidence: 99%

Minimizing Capacitance Value of Interleaved Power Factor Corrected Boost Converter for Battery Charger in Electric Vehicles

Turksoy¹,

Yılmaz²,

Teke³

2019

ELEKTRON ELEKTROTECH

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show abstract

“…MPPF-Caps outperform Al-Caps in terms of ESR, self-healing capability, life expectancy, environmental performance, dc-blocking capability, ripple current capability, and reliability. However, the capacitance of the MPPF-Caps still cannot compete with Al-Caps, due to their relatively low volumetric efficiency and high cost [12]. Several comparisons were presented in [13][14][15] about the performance between Al-Cap and MPPF-Cap.…”

Section: Introductionmentioning

confidence: 99%

Review of Health Monitoring Techniques for Capacitors Used in Power Electronics Converters

Dang

Kwak

2020

Sensors

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Capacitors are critical components of power converter systems as they influence the cost, size, performance, and scale of such systems. However, capacitors exhibit the highest degeneration and breakdown rates among all power converter components due to their wear-out failures and short lifespans. Therefore, condition monitoring is a vital process to estimate the health status of capacitors and to provide predictive maintenance for ensuring stability in the operation of power converter systems. The equivalent series resistance (ESR) and the capacitance of the capacitor are two widely used parameters for evaluating the health status of capacitors. Unlike the ESR, the capacitance of a capacitor is suitable for the health monitoring of various types of capacitors; therefore, it is more preferable for large-scale systems. This paper presents an overview of previous research addressing this aspect of capacitors and provides a better understanding of the capacitance monitoring of capacitors utilized in power converter systems.

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“…A control method for bridgeless Cuk/Sepic power factor correction rectifier operated in continuous conduction mode was also proposed to achieve power decoupling [19]. Although, the bulky electrolytic capacitor can be replaced with a small film capacitor, this control method requires an extra voltage sensor for the intermediate capacitor and the system cost is increased.Pulsating power buffering technology [8,20,21] has recently expanded, which can reduce the number of components including passive and active ones. Although rectifiers using pulsating power buffering technology have high power density, high conversion efficiency and high reliability, high voltage stress is still present in the switches and diodes [22], which leads to high switching and conduction losses and reduces the rectifier life-span.This paper proposes a bridgeless Cuk rectifier with modified dual loop control scheme.…”

mentioning

confidence: 99%

“…Pulsating power buffering technology [8,20,21] has recently expanded, which can reduce the number of components including passive and active ones. Although rectifiers using pulsating power buffering technology have high power density, high conversion efficiency and high reliability, high voltage stress is still present in the switches and diodes [22], which leads to high switching and conduction losses and reduces the rectifier life-span.…”

mentioning

confidence: 99%

A Step Up/Down Power-Factor-Correction Converter with Modified Dual Loop Control

Liao

2020

Energies

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A step up/down AC/DC converter with modified dual loop control is proposed. The step up/down AC/DC converter features the bridgeless characteristic which can reduce bridge-diode conduction losses. Based on the step up/down AC/DC converter, a modified dual loop control scheme is proposed to achieve input current shaping and output voltage regulation. Fewer components are needed compared with the traditional bridge and bridgeless step up/down AC/DC converters. In addition, the intermediate capacitor voltage stress can be reduced. Furthermore, the top and bottom switches still have zero-voltage turn-on function during the negative and positive half-line cycle, respectively. Hence, the thermal stresses can also be reduced and balanced. Simulation and experimental results are provided to verify the validity of the proposed step up/down AC/DC converter and its control scheme.

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Use of a Series Voltage Compensator for Reduction of the DC-Link Capacitance in a Capacitor-Supported System

Abstract: A new concept of high-voltage DC-DC conversion using asymmetric voltage distribution on the switch pairs and hybrid ZVS-ZCS scheme," IEEE Trans. on Power Electron., (in press

Cited by 201 publications

References 18 publications

Minimizing Capacitance Value of Interleaved Power Factor Corrected Boost Converter for Battery Charger in Electric Vehicles

Minimizing Capacitance Value of Interleaved Power Factor Corrected Boost Converter for Battery Charger in Electric Vehicles

Review of Health Monitoring Techniques for Capacitors Used in Power Electronics Converters

A Step Up/Down Power-Factor-Correction Converter with Modified Dual Loop Control

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