Control circuit, control method thereof, and vehicle

The invention provides a control circuit, a control method thereof, and a vehicle. The control circuit comprises a first change-over switch, a second change-over switch, a first connecting switch, a second connecting switch, a third connecting switch, a first capacitor, a second capacitor, a first inductor, a first controllable power device, a second controllable power device, a third controllable power device, a fourth controllable power device, a fifth controllable power device, a sixth controllable power device, a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a first motor connecting end, a second motor connecting end, a third motor connecting end, a first DC power supply end, a second DC power supply end, a first AC power supply end and a second AC power supply end.