Multiphase alternating-current motor, inverter, electric driving component and electric actuator

Abstract

The invention provides an electric driving component, an electric actuator, an inverter and a multiphase alternating-current motor. The electric driving component comprises the multiphase alternating-current motor, a direct-current power source and the inverter, wherein the number of phases of the multiphase alternating-current motor is k, and the multiphase alternating-current motor has a rated line voltage and a rated line current; the direct-current power source is used for supplying a direct current corresponding to the rated line current; the inverter converts the direct current into an alternating current according to a control signal supplies the alternating current to the multiphase alternating-current motor; the multiphase alternating-current motor comprises m independent multiphase windings, wherein each multiphase winding comprises k independent winding parts corresponding to the k phases respectively, and m in-phase windings among the m multiphase windings are formed by parallel winding of m lines; and the inverter comprises m inversion units corresponding to the m multiphase windings respectively, wherein each inversion unit comprises k bridge arm parts which are connected in parallel and correspond to the k phases respectively, the bridge arm parts are used for supplying k-channel line currents to the corresponding multiphase windings, and each bridge arm part contains w inversion bridge arms connected in parallel.

Description

technical field [0001] The invention belongs to the field of alternating current motors, and in particular relates to a large-current multiphase alternating current motor, an inverter, an electric driving assembly including the multiphase alternating current motor and the inverter, and an electric device including the electric driving assembly. Background technique [0002] High-power electric devices usually choose an AC motor as the driving motor. The AC motor is connected to the inverter, and the inverter is connected to the DC power supply. When the motor starts to start, the inverter converts the DC power into AC power according to the control signal sent by the controller and the trigger circuit, and supplies it to the AC motor. [0003] For mobile electric devices such as locomotives, ships or ships, batteries are generally selected as DC power sources. For safety reasons, the voltage of the battery should not be too high, generally less than 60 volts. Therefore, in ...

AI Technical Summary

Problems solved by technology

to combine figure 2 and image 3 Based on the advantages of inverters and multi-phase AC motors, a new electric drive component is proposed, which not only overcomes the defects of low-voltage and high-current motors caused by the poor consistency of semiconductor switching elements, but also avoids the image 3 Too many AC motor and inverter connectors increase the difficulty and cost of production and maintenance

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