Design and Implementation of an 18-kW 500-kHz 98.8% Efficiency High-Density Battery Charger With Partial Power Processing

Cao, Yuliang; Ngo, Minh; Yan, Ning; Dong, Dong; Burgos, Rolando; Agirman, I.

doi:10.1109/jestpe.2021.3108717

Cited by 86 publications

(15 citation statements)

References 35 publications

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“…3) Approaches exploiting partial power processing: A solution using input-parallel and output-series partial power processing (PPP) and resonant CLLC-type DCXs is proposed in [24], considering a narrower range of operating voltages with respect to the one considered herein. The topology is characterized by low switching losses on the output switches, but it requires an active rectification with very low conduction losses and a relatively high number of devices.…”

Section: Hereinmentioning

confidence: 99%

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Design and Implementation of a Two-Stage Resonant Converter for Wide Output Range Operation

Zanatta

Caldognetto

Biadene

et al. 2022

IEEE Trans. on Ind. Applicat.

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This paper proposes and analyzes a two-stage isolated dc-dc converter for electric vehicle charging applications, where high efficiency over a wide range of battery voltages is required. It employs a first pre-regulation stage and a second half-bridge LLC stage, integrated with the first. The second stage is always operated at resonance, ensuring high efficiency. The first pre-regulation stage is responsible for the desired input-to-output voltage conversion ratio and the zero-voltage switching operation of all the switches. This allows low conversion losses even with voltages that may vary over a wide range. The paper presents the conversion structure, the converter analysis, the design of the magnetic elements, and demonstrates the converter operation considering an experimental prototype interfacing a 750 V dclink with an output bus with nominal voltage range 250 V-500 V. The implemented module is rated 5 kW and achieves a peak efficiency of 98.0% at 3 kW output power.

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Section: Hereinmentioning

confidence: 99%

“…1) primary-side [15], [17]- [19] or secondary-side structures [11], [20]- [22]; 2) resonant tank [23]; 3) conversion structure considering partial-power conversion [3], [24], [25], and 4) number of stages [10], [26]- [31].…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Two-Stage Resonant Converter for Wide Output Range Operation

Zanatta

Caldognetto

Biadene

et al. 2022

IEEE Trans. on Ind. Applicat.

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“…active resonant circuit is added to create the required current zero crossing, MCB can be effectively adopted for the dc applications [5]. The solid-state circuit breaker (SSCB) based on semiconductor devices could interrupt the fault current quickly without any arc issue, but it suffers from the high conduction loss during the normal operation [6], [7].…”

Section: Introductionmentioning

confidence: 99%

12-kV 1-kA Breaking Capable Modular Power Electronic Interrupter With Staged Turn-off Strategy for Medium-Voltage DC Hybrid Circuit Breaker

Liu

Ravi

Buttay

et al. 2022

IEEE Trans. on Ind. Applicat.

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The dc circuit breaker (DCCB) plays an important protection role in the dc distribution systems. Hybrid dc circuit breaker (HCB) offers low conduction losses and reasonably fast response times. In this paper, a high power density, modular and scalable power electronic interrupter (PEI) design is introduced for medium voltage (MV) HCB platforms. Following this concept, the single low-voltage (LV) module is first investigated in terms of the high pulse current ratio and the voltage clamping circuit. After the comparison and test among different devices, a compact module with 1.7 kV discrete IGBTs are selected as main switches. While the voltage clamping circuit is carefully designed to guarantee no tail current bump and sufficient turn-off voltage margin. Next the whole system with series modules is optimized on the aspects of the turn-off strategy, power supply structure and layout of modules. An improved staged turn-off scheme is proposed, which can not only reduce the peak current and total metal oxide varistor (MOV) energy, but also help balance the MOV energy distribution. A 12 kV and 1 kV breaking capable PEI was demonstrated based on the proposed PEI design, achieving a peak power density of 7.4 kW/cm3, much higher than the IGBT module-based solution. The breaking capability and effectiveness of the modular PEI is demonstrated in a 6 kV MVDC HCB device.

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“…A solution using input-parallel and output-series partial power processing (PPP) and resonant CLLC-type DCXs is proposed in [13], considering a narrower range of operating voltages with respect to the one considered herein. The topology is characterized by low switching losses on the output switches, but it requires an active rectification with very low conduction losses and a relatively high number of devices.…”

Section: Introductionmentioning

confidence: 99%

“…Partial power conversion solutions show potential advantages to accommodate wide operating voltage ranges for applications like in Fig. 1, at the cost of a higher number of components, a more complex design of DCXs stages, and more complex modulations [13]- [15].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Performance Evaluation of a Two-Stage Resonant Converter for Wide Voltage Range Operation

Zanatta

Caldognetto

Spiazzi

et al. 2022

2022 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper proposes a two-stage isolated dc-dc converter for electric vehicle charging applications, where high efficiency over a wide range of battery voltages is required. It employs a first pre-regulation stage and a second half-bridge LLC stage, integrated with the first. The second stage is always operated at resonance, ensuring very high efficiency. The first pre-regulation stage is responsible for the desired input-to-output voltage conversion ratio and the zero-voltage switching operation of all the switches. This allows low conversion losses even with voltages that may vary over a wide range. The conversion structure is shown considering a first experimental prototype that interfaces a 750-V dc-link with an output bus with nominal voltage range 250V-500V. The implemented module is rated 5 kW and achieves a peak efficiency of 98.0% at 3 kW output power.

show abstract

Design and Implementation of an 18-kW 500-kHz 98.8% Efficiency High-Density Battery Charger With Partial Power Processing

Cited by 86 publications

References 35 publications

Design and Implementation of a Two-Stage Resonant Converter for Wide Output Range Operation

Design and Implementation of a Two-Stage Resonant Converter for Wide Output Range Operation

12-kV 1-kA Breaking Capable Modular Power Electronic Interrupter With Staged Turn-off Strategy for Medium-Voltage DC Hybrid Circuit Breaker

Analysis and Performance Evaluation of a Two-Stage Resonant Converter for Wide Voltage Range Operation

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