POWER SOURCE DEVICE FOR ELECTRIC VEHICLE

• Main Authors: KONO YUSUKE, MINAMI TAKAHIKO
• Format: Patent
• Language: English; Japanese
• Published: 11.03.2021
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To provide a power source device for an electric vehicle, for estimating loss for each high-frequency insulation circuit configuration with a simple configuration.SOLUTION: A power source device 1 for an electric vehicle includes high-frequency converters 32, 35, rectifiers 33, 36, boosting choppers 21, 22, inverters 31, 34, and a control circuit 15. The inverters 31, 34 include resonance capacitors C3 to C6, and supply AC currents to the high-frequency converters 32, 35. The control circuit 15 calculates a total loss on the basis of input voltages to the inverters 31, 34 and output voltages and output currents from the rectifiers 33, 36, and calculates AC current effective values outputted from the inverters 31, 34, and respective losses of the inverters 31, 34, the high-frequency converters 32, 35, and the rectifiers 33, 36 on the basis of the total loss, and calculates the capacitances of the resonance capacitors C3 to C6 and/or the resonance frequencies of the inverters on the basis of the AC current effective values.SELECTED DRAWING: Figure 1 【課題】簡易な構成で高周波絶縁回路の構成毎の損失を推定する電気車用電源装置を提供する。【解決手段】電気車用電源装置１は、高周波変圧器３２、３５と、整流器３３、３６と、昇圧チョッパ２１、２２と、インバータ３１、３４と、制御回路１５とを具備する。インバータ３１、３４は、共振コンデンサＣ３〜Ｃ６を有し、高周波変圧器３２、３５に交流電流を供給する。制御回路１５は、インバータ３１、３４への入力電圧と、整流器３３、３６の出力電圧及び出力電流と、に基づいて合計損失を算出し、合計損失に基づいて、インバータ３１、３４から出力される交流電流実効値と、インバータ３１、３４、高周波変圧器３２、３５及び整流器３３、３６のそれぞれの損失と、を算出し、交流電流実効値に基づいて、共振コンデンサＣ３〜Ｃ６の容量及びインバータの共振周波数の少なくとも一方を算出する。【選択図】図１