ELECTRIC POWER CONVERSION SYSTEM

• Main Author: SHIBA TORU
• Format: Patent
• Language: English; Japanese
• Published: 11.06.2020
• 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 an electric power conversion system which can be miniaturized.SOLUTION: An electric power conversion system 1 is provided with: a negative-electrode side capacitor which is connected to an electric power source on a negative-electrode side thereof; and an insulating substrate 4 on which a power semiconductor device 5 is mounted. The insulating substrate 4 is provided with: a positive-electrode side metal layer 4b which is formed on one surface and electrically connected to the power semiconductor device 5; and an earth side metal layer 4c which is formed in a position corresponding to the positive-electrode side metal layer 4b on the other surface and electrically connected to a ground member. Electrostatic capacity of capacitor formed between the positive-electrode side metal layer 4b and the earth side metal layer 4c is set so as to be equal to electrostatic capacity of the negative-electrode side capacitor.SELECTED DRAWING: Figure 1 【課題】小型化が可能な電力変換装置を提供する。【解決手段】電力変換装置１は、電源の負極側と接続される負極側コンデンサと、パワー半導体素子５が実装される絶縁基板４と、を備える。絶縁基板４は、一方の面に形成されると共にパワー半導体素子５と電気的に接続される正極側金属層４ｂと、他方の面において正極側金属層４ｂと対応する位置に形成されると共に接地部材と電気的に接続される接地側金属層４ｃとを備える。正極側金属層４ｂと接地側金属層４ｃとの間に形成されるコンデンサの静電容量は、負極側コンデンサの静電容量と等しく設定される。【選択図】図１