MULTI-PHASE ELECTRIC MOTOR DRIVE UNIT

• Main Authors: KURAKI MAKOTO, ODA KENJI, TSURUTA RYOJI
• Format: Patent
• Language: English; Japanese
• Published: 01.11.2021
• 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 solve the problem in which, when a plurality of single-phase inverters is connected in series-parallel to drive a multi-phase electric motor, the unbalance of the DC voltage of each single-phase inverter may cause a failure of equipment.SOLUTION: A multi-phase electric motor drive unit includes a DC voltage balance control unit that controls so that a DC voltage of each of the single-phase inverters connected in series among the single-phase inverters connected in series-parallel becomes uniform.SELECTED DRAWING: Figure 3 【課題】複数の単相インバータを直並列に接続して多相電動機を駆動する際、各単相インバータの直流電圧のアンバランスにより、機器の故障を招く恐れがある。【解決手段】直並列に接続されている単相インバータのうち、直列に接続されている単相インバータの各々の直流電圧が均一となるように制御する直流電圧バランス制御部を備えた。【選択図】図３