MOTOR DRIVE APPARATUS AND AIR CONDITIONER
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Abstract
A motor drive apparatus driving a motor as a three-phase motor converting direct current into three-phase alternating current, includes: inverter modules and 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.
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Citations
27 Claims
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1-12. -12. (canceled)
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13. A motor drive apparatus driving a motor, comprising:
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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 current flowing through 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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification