Monday, 6 April 2015

in a 180Vdc treadmill motor, what is the maximum Vdc the motor will accept running?

Question  in a 180Vdc treadmill motor, what is the maximum Vdc the motor will accept running?

Answer

1) the voltage to the motor is never the maximum, the controller cuts it to regulate the motor speed.

2) there's not a standard rule about the max voltage accepted by the motor, depends on the motor curves. Anyway the motor accepts 300V for example if the controller is in short circuit you'll see the motor running with 300VDC (with no load), and it's not damaged.

3) the motor speed regulation is based on PWM, this means the voltage is 300V "cutted" such as in a cut-phase regulation. 

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