SEMICONDUCTOR MODULE AND POWER CONVERTER

• Main Author: FUJIWARA TETSUO
• Format: Patent
• Language: English; Japanese
• Published: 25.08.2023
• 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 reduce a surge voltage caused by a wiring inductance by effectively reducing the wiring inductance of a bus bar.SOLUTION: A semiconductor module has a switching circuit constituted by a first semiconductor element 103a and a second semiconductor element 103b connected in series, and is provided with a first bus bar 201 connected with a positive electrode side of the first semiconductor element 103a, a second bus bar 202 connected with a negative electrode side of the second semiconductor element 103b, and a third bus bar 203 connected with a negative electrode side of the first semiconductor element 103a and a positive electrode side of the second semiconductor element 103b. One bus bar of the first bus bar 201 and the second bus bar 202 is arranged so as to sandwich the third bus bar 203 and the other bus bar of the first bus bar 201 and the second bus bar 202 while the first bus bar 201, the second bus bar 202 and the third bus bar 203 extend in the same direction.SELECTED DRAWING: Figure 3 【課題】バスバーの配線インダクタンスを効果的に抑制することにより、配線インダクタンスに起因したサージ電圧を低減する。【解決手段】直列接続された第１半導体素子１０３ａと第２半導体素子１０３ｂから成るスイッチング回路を有し、第１半導体素子１０３ａの正極側が接続される第１バスバー２０１と、第２半導体素子１０３ｂの負極側が接続される第２バスバー２０２と、第１半導体素子１０３ａの負極側と第２半導体素子１０３ｂの正極側が接続される第３バスバー２０３を設け、第１バスバー２０１と第２バスバー２０２と第３バスバー２０３は同一方向に延びるとともに、第１バスバー２０１と第２バスバー２０２のうちのいずれか一方のバスバーは、第３バスバー２０３、及び第１バスバー２０１と第２バスバー２０２のうちの他方のバスバーを挟み込むように配置されている。【選択図】図３