The invention discloses an external
motor power conversion circuit of a permanent
magnet reluctance type double rotor motor. The external
motor power conversion circuit comprises a power supply, three-phase windings of a
stator, and four parallel bridge arms. The upper end of each bridge arm is connected with a positive output end of the power supply, and the lower end is connected with a negative output end of the power supply. Each bridge arm is formed by connecting two switching tubes in series, and the two switching tubes are each connected with a
power diode in parallel in the reverse direction. With regard to two adjacent bridge arms, and a phase of windings of the
stator is connected in series between an emitter of the switching tube at the upper
half bridge arm of one bridge arm and a collector of the switching tube at the
lower half bridge arm of the other bridge arm. The external
motor power conversion circuit designed for the special structure of an external motor of the permanent
magnet reluctance type double rotor motor can guarantee the efficient operation of the external motor of the permanent
magnet reluctance type double rotor motor, reduces the use of switching devices, improves the control performance of the external motor of the permanent magnet reluctance type double rotor motor, reduces operation cost, and promotes the application of the permanent magnet reluctance type double rotor motor.