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- 검색키워드
- 저자 : Wei-Jing Tseng (검색결과 2 건)
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Voltage Clamping Balance for Charging/Discharging Battery Module
Yi-Yuan Chung,Tsorng-Juu Liang,Wei-Jing Tseng,Jwo-Hann Liu 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
This paper proposes a voltage clamping balance (VCB) method applied with battery power module (BPM) system. The VCB method, which indicates that battery balance is activated after the battery voltage reached its rated value, can save the cost of battery state of charge (SOC) estimation and increases system reliability while keeping the battery voltage in safe operating region. Otherwise, a VCB discharging experimental result shows that the proposed method can release more charge from battery than conventional discharging method in this paper. The proposed system composed of several BPMs and a system control circuit can provide energy as a DC voltage source in discharge mode, and can be charged by an external DC voltage source in charge mode. Meanwhile, the characteristics of BPM system such as high flexibility and capability of hot-swapping can be achieved by the proposed system. Finally, a 24-V LiFePO4 BPM system prototype containing 4 BPMs with 200-W power rating for each BPM is built to verify the feasibility of the proposed VCB method and the proposed BPM system.
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Primary-Side Control for Flyback Converter with Wide Range Operation
Bin-Kun Huang,Tsorng-Juu Liang,Wei-Jing Tseng,Kai-Hui Chen,Qing-Mu Chen 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
Most of current primary side regulation (PSR) control methods are implemented in either discontinuous conduction mode (DCM) or continuous conduction mode (CCM). Because of the difficulty in sensing the output voltage, no algorithm is suitable for both DCM and CCM, and the power range of the system is limited. The proposed controller is suitable for both DCM and CCM with wide power range operation. The “TSMC 0.25 μm CMOS high voltage mixed signal process” is adopted to implement the proposed IC. A flyback converter with 400 V input and 20 V/150 W output is built to verify the feasibility of proposed control IC.
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