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1. (WO2018078840) DRIVE DEVICE, AIR CONDITIONER AND DRIVE METHOD OF ELECTRIC MOTOR

Pub. No.:    WO/2018/078840    International Application No.:    PCT/JP2016/082208
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Tue Nov 01 00:59:59 CET 2016
IPC: H02P 25/18
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: NIGO Masahiro
仁吾 昌弘
Title: DRIVE DEVICE, AIR CONDITIONER AND DRIVE METHOD OF ELECTRIC MOTOR
Abstract:
This drive device (100) drives an electric motor (1) having a coil (3). The drive device (100) is provided with a converter (102) which generates a bus voltage, an inverter (103) which converts the bus voltage to an AC voltage and supplies this to the coil (3), and a connection switching unit (60) which switches the connection state of the coil (3). The bus voltage generated by the converter (102) is switched depending on the connection state of the coil (3).