Stator-based permanent magnet field-enhanced hybrid-excitation motor capable of operating under multiple working conditions and drive control method thereof

A driving control method of a stator-based permanent magnet field-enhanced hybrid-excitation motor capable of operating under multiple operating conditions, comprising:

• forming a power converter of the motor by four H-bridges, wherein incoming and outgoing ends of an excitation winding are each connected with a center point of one H-bridge arm, and incoming and outgoing ends of a three-phase winding are each connected with the center point of one H-bridge arm to form an open winding structure;
• the H-bridge of the excitation winding is connected in series with a bus of the open winding structure of the three-phase winding;
• every three bridge arms of the open winding structure form a group;
• and a switch transistor is arranged between each two groups;
• and
• implementing operation under multiple working conditions, wherein when the motor operates as a permanent magnet synchronous motor, lower tubes of a group of three bridge arms of the open winding structure are communicated, such that the outgoing ends of the three-phase winding are connected together, and the switch transistor is opened;
• and when the motor operates as a switched reluctance motor, the switch transistor is closed, wherein an upper tube of the bridge arm connected with the incoming end of each phase winding and a lower tube of the bridge arm connected with the outgoing end of each phase winding form a power converter of the switched reluctance motor, and an upper tube of the bridge arm connected with the outgoing end of each phase winding and a lower tube of the bridge arm connected with the incoming end of each phase winding only use diodes connected in subtractive series thereof for freewheeling.