A High-Efficient Nonisolated Single-Stage On-Board Battery Charger for Electric Vehicles

Oh, Chulhong; Kim, Dong‐Hee; Woo, Dong-Gyun; Sung, Won-Yong; Kim, Yun-Sung; Lee, Byoung-Kuk

doi:10.1109/tpel.2013.2252200

Cited by 168 publications

(47 citation statements)

References 22 publications

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“…The primary current i p charges C 1 and C 4 and discharges C 2 and C 3 . 4 ) is very small, the time interval during this mode is considered negligible compared to T s . The magnetizing current i Lm is considered to be constant.…”

Section: Mode 2 [T 1 T 2 ]mentioning

confidence: 99%

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High-efficiency low-cost soft-swtiching DC-DC converter for EV on-board battery chargers

Yang

Cho

Lee

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper proposes a high-efficiency softswitching pulse-width modulated (PWM) full-bridge (FB) dc-dc converter for the on-board battery charger of electric vehicles (EVs). Asymmetrical PWM (APWM) FB converter is proposed with zero-voltage switching (ZVS) of the power switches and zero-current switching (ZCS) of an output diode. Switching losses can be reduced by achieving ZVS and ZCS. Conduction losses are also reduced by eliminating circulating currents. Compared to the conventional phase-shift modulated (PSM) FB converter, the proposed converter has less component counts and reduces power losses, improving the power efficiency. As a result, a high efficiency can be achieved for the on-board battery charger of EVs. The performance of the proposed converter is evaluated by experimental results for an 1.0 kW prototype circuit.I.

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Section: Mode 2 [T 1 T 2 ]mentioning

confidence: 99%

“…The on-board battery chargers generally consist of an ac-dc rectifier for a power-factor correction (PFC) and a dc-dc converter for charging battery banks [4]. By using the ac-dc rectifier, the dc-link voltage is charged from the ac grid voltage.…”

Section: Introductionmentioning

confidence: 99%

High-efficiency low-cost soft-swtiching DC-DC converter for EV on-board battery chargers

Yang

Cho

Lee

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…EVs do not emit any harmful gasses locally, which has positive impact on air quality in the urban environment and public health as well [1] . Furthermore, EVs are more energy efficient in terms of kWh/km.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, EVs are more energy efficient in terms of kWh/km. In EVs and PHEVs, a battery is used as the main power source, so that battery charger is treated as the core technology [1,2] . Various topologies and control methods have been developed for EVs chargers.…”

Section: Introductionmentioning

confidence: 99%

Reduced Current Distortion of Three-Phase Three-Switch Buck-Type Rectifier using Carrier Based PWM in EV Traction Battery Charging Systems

Chae¹,

Kang²,

Kang³

et al. 2015

The Transactions of the Korean Institute of Power Electronics

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This study investigates an economic and highly efficient power-converter topology and its modulation scheme for 60 kW rapid EV charger system. The target system is a three-phase three-switch buck-type rectifier topology. A new carrier-based PWM scheme, which is characterized by simple implementation using logic gates, is introduced in this paper. This PWM scheme replaces the diode rectifier equivalent switching state with an active switching state to produce the same effective current flowing path. As a result, the distortion of input current during the polarity reversal of capacitor line voltage can be mitigated. The proposed modulation technique is confirmed through simulation verification. The proposed modulation technique and its implementation scheme can expand the operation range of the three-phase three-switch buck-type rectifier with high-quality AC input and capacitor ripple current.

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“…General EV charger circuit Deployment of EV chargers depends on requirements as specified in [11] such as charger safety, durability, efficiency, cost, size, and charging time. Resonant converters obtain high efficiency and power density due to soft switching (ZVS-ZCS) in entire load range at high operating frequency [12]. They have wide input and output voltage range characteristics [13].…”

Section: Introductionmentioning

confidence: 99%

Hybrid control approach of CLL resonant converter for EV battery chargers

Colak

Asa

Bojarski

et al. 2014

IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society

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In this study, a CLL resonant converter with different control strategies; frequency, dc-link, and phase shift control are compared and a hybrid control is proposed to increase the efficiency of the system for Electric Vehicle (EV) battery charger applications. The comparison analysis is examined considering the battery charging control algorithms constant current (CC) and constant voltage (CV) with modeling the battery as a variable load. In order to improve charging efficiency, the system should operate in a close to resonant frequency, achieving ZVS and reducing circulating current. The presented control is achieved by staying around the resonant frequency in all charging conditions. The designed dc/dc resonant converter, fed by a power-factor-corrector (PFC) with 80-120 V output, provides 120 V / 10 A at 1.2 kW maximum power. The application results show that the proposed hybrid control improves overall efficiency 2 %.

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A High-Efficient Nonisolated Single-Stage On-Board Battery Charger for Electric Vehicles

Cited by 168 publications

References 22 publications

High-efficiency low-cost soft-swtiching DC-DC converter for EV on-board battery chargers

High-efficiency low-cost soft-swtiching DC-DC converter for EV on-board battery chargers

Reduced Current Distortion of Three-Phase Three-Switch Buck-Type Rectifier using Carrier Based PWM in EV Traction Battery Charging Systems

Hybrid control approach of CLL resonant converter for EV battery chargers

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