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US 2017/0288595 A1Published application
Motor drive apparatus and air conditioner
AssigneeMitsubishi Electric Corporation
InventorsYosuke SHINOMOTO, Takuya SHIMOMUGI, Norikazu ITO, Keisuke UEMURA, Takashi YAMAKAWA
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Abstract
A motor drive apparatus driving a motor as a three-phase motor converting direct power into three-phase alternating power, includes: inverter modules equivalent in number to phases of the motor; and a control unit generating PWM signals used to drive the inverter modules with PWM. The inverter modules each include a plurality of switching element pairs connected in parallel, each of the switching element pairs including two switching elements connected in series.
Claims20
1-16. (canceled)
A motor drive apparatus driving a motor, comprising:
- inverter modules equivalent in number to phases of the motor;
- and
- a control unit generating a PWM signal used to drive the inverter modules with PWM, wherein
- a pulse width of the PWM signal changes according to a temperature of at least one of the inverter modules, and
- the inverter modules each include a plurality of switching element pairs connected in parallel, each of the switching element pairs including two switching elements connected in series.
2 more elements
Dependencies are inferred from the claim text.