Multi-motor integrated power circuit, motor power control method and electronic device

A motor power control method, comprising:

• receiving an AC input signal from an AC power source;
• converting the AC input signal to a busbar power signal;
• converting and superposing a power input signal to the busbar power signal;
• converting the busbar power signal to an isolation output signal based on a first drive signal;
• converting the busbar power signal to a first AC signal based on a second drive signal;
• converting the first AC signal to at least two second AC signals;
• converting the isolation output signal or the second AC signals to a DC drive signal and outputting the DC drive signal to a DC motor;
• and
• converting the isolation output signal or the second AC signals to an AC drive signal and outputting the AC drive signal to an AC motor.

An electronic device, comprising:

• a shell;
• and
• a multi-motor integrated power circuit, wherein the multi-motor integrated power circuit comprises:
• a standby power source;
• a busbar;
• a power input conversion circuit coupled between the standby power source and the busbar to receive a power input signal from the standby power source and convert the power input signal to a busbar power signal, and output the busbar power signal to the busbar;
• a power factor correction circuit coupled with the busbar and for coupling with an AC power source to receive an AC input signal from the AC power source and convert and superpose the AC input signal to the busbar power signal;
• a first isolation circuit coupled with the busbar;
• a second isolation circuit comprising a first switch sub-circuit and an isolation transformer, wherein the isolation transformer comprises a primary winding and at least two secondary windings coupled with the primary winding, and the first switch sub-circuit is coupled with the busbar and the primary winding;
• a first power conversion circuit coupled with the first isolation circuit or one of the secondary windings and for coupling with a DC motor;
• a second power conversion circuit coupled with the first isolation circuit or one of the secondary windings and for coupling with an AC motor;
• and
• a control circuit coupled with the power input conversion circuit, the power factor correction circuit, the first switch sub-circuit, the first power conversion circuit, and the second power conversion circuit,
• wherein:
• the first isolation circuit is configured to receive a first drive signal from the control circuit and convert the busbar power signal to an isolation output signal based on the first drive signal;
• the first switch sub-circuit is configured to receive the busbar power signal from the busbar and a second drive signal from the control circuit and convert the busbar power signal to a first AC signal based on the second drive signal;
• the primary winding is configured to receive the first AC signal from the first switch sub-circuit, and the at least two secondary windings convert the first AC signal to at least two second AC signals;
• the first power conversion circuit is configured to receive the isolation output signal from the first isolation circuit or the second AC signal from each of the secondary windings, convert the isolation output signal or the second AC signal to a DC drive signal, and output the DC drive signal to the DC motor;
• and
• the second power conversion circuit is configured to receive the isolation output signal from the first isolation circuit or the second AC signal from each of the secondary windings, convert the isolation output signal or the second AC signal to an AC drive signal, and output the AC drive signal to the AC motor.