ELECTRIC MOTOR DRIVE DEVICE

• Main Authors: IWABORI MICHIO, BABA KENJI
• Format: Patent
• Language: English; Japanese
• Published: 05.12.2019
• 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 an electric motor drive device capable of reducing a pulsating component flowing in a capacitor and reducing the duty of the capacitor.SOLUTION: An electric motor drive device 100 includes m (m is an integer of 3 or more) inverter units 1 and a control unit 50. In the m inverter units 1, the control unit 50 controls a first single-phase full bridge circuit 10 and a second single-phase full bridge circuit 20 such that the amplitude of a pulsating component of a combined waveform in a common capacitor 30 between a first power p1-1 output from the first single-phase full-bridge circuit 10 to the first winding 121 and a second power p2-1 output from the second single-phase full bridge circuit 20 to a second winding 122 is the amplitude of a pulsating component of either the first power p1-1 or the second power p2-1 or less in the m inverter units 1.SELECTED DRAWING: Figure 1 【課題】コンデンサに流れる脈動成分を低減することができ、コンデンサの責務を低減することが可能な電動機駆動装置を提供する。【解決手段】この電動機駆動装置１００は、ｍ個（ｍは３以上の整数）のインバータユニット１と制御部５０とを備える。制御部５０は、ｍ個のインバータユニット１では、第１単相フルブリッジ回路１０から第１巻線１２１に出力される第１電力ｐ１−１と、第２単相フルブリッジ回路２０から第２巻線１２２に出力される第２電力ｐ２−１との共通コンデンサ３０における合成波形の脈動成分の振幅が、第１電力ｐ１−１または第２電力ｐ２−１のいずれか一方の脈動成分の振幅以下となるように第１単相フルブリッジ回路１０および第２単相フルブリッジ回路２０を制御する。【選択図】図１