Motor driving device
A technology of motor drive and equipment, applied in heating/cooling equipment, controlling multiple AC motors, multiple motor speed adjustments, etc., can solve problems such as adverse effects
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[0021] refer to figure 1 , to illustrate the motor drive apparatus 10A. In one embodiment, the motor-driven device 10A is used for a blower in a vehicle air conditioner. However, it will be appreciated that the motor drive apparatus 10A may also be used for any other suitable purpose. exist figure 1 , the same reference signs are given as image 3 The components corresponding to those components in .
[0022] The motor drive device 10A includes inverter circuits 20A, 30A, a smoothing circuit 35 , and an amplifier circuit 36 . In one embodiment, the inverter circuit 20 of the present embodiment is widely known (eg, with image 3 The inverter circuit 20 shown is substantially the same).
[0023] The smoothing circuit 35 includes a smoothing capacitor and the like, and smoothes the pulse signal P0 output from the electronic control unit 40 . The amplifier circuit 36 amplifies the voltage output from the smoothing circuit 35, and applies the amplified voltage to the sin...
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