5. When the motor is driven by the power frequency power supply, the voltage decreases and the current increases; for the inverter drive, if the voltage also drops when the frequency drops, does the current increase? When the frequency drops (low speed), if the output power is the same, the current increases, but under the condition of constant torque, the current is almost unchanged. 6.When the inverter is used, what is the starting current and starting torque of the motor?

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