INVERTER DRIVING METHOD

• Main Author: TANAKA SHOICHI
• Format: Patent
• Language: English; Japanese
• Published: 13.05.2021
• 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 OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To provide a 3-phase PWM inverter driving method which can reduce heat generation and power attenuation.SOLUTION: A leg 1U applies an U-phase voltage VU1 to a phase coil 3U. A leg 2U applies an U-phase voltage VU2 to the phase coil 3U. Thereby, an U-phase voltage VU (=VU1-VU2) is applied to the phase coil 3U. A leg 1V applies a V-phase voltage VV1 to a phase coil 3V. A leg 2V applies an U-phase voltage VV2 to the phase coil 3V. Thereby, a V-phase voltage VV (=VV1-VV2) is applied to the phase coil 3V. A leg 1W applies a W-phase voltage VW1 to a phase coil 3W. A leg 2W applies a W-phase voltage VW2 to the phase coil 3W. Thereby, a W-phase voltage VW (=VW1-VW2) is applied to the phase coil 3W. The phase difference between three phase voltage (VU, VV and VW) is an electric angle of 120°.SELECTED DRAWING: Figure 1 【課題】熱発生及び電力損失を低減可能な３相PWMインバータ駆動法を提供する。【解決手段】レグ１Uは、U相電圧VU1を相コイル３Uに印加する。レグ２Uは、U相電圧VU２を相コイル３Uに印加する。これにより、U相電圧VU（＝VU1-VU２）が相コイル３Uに印加される。レグ１Vは、V相電圧VV1を相コイル３Vに印加する。レグ２Vは、U相電圧VV２を相コイル３Vに印加する。これにより、V相電圧VV（＝VV1-VV２）が相コイル３Vに印加される。レグ１Wは、W相電圧VW1を相コイル３Wに印加する。レグ２Wは、W相電圧VW２を相コイル３Wに印加する。これにより、W相電圧VW（＝VW1-VW２）が相コイル３Wに印加される。３つの相電圧（VU、VV、及びVW）の間の位相差は電気角１２０度である。【選択図】図１