Parallel-series excited direct-current motor

Abstract

The invention provides a parallel-series excited direct-current motor which is connected with m pairs of power output terminals formed by at least one direct-current power supply and has rated input current, and is characterized by comprising a casing; m pairs of brushes; a stator including m pairs of main magnetic poles corresponding to the m pairs of brushes and including one series excitation winding part and one parallel excitation winding part; and a rotor, wherein the series excitation winding part comprises m series excitation winding units; the m series excitation winding units respectively correspond to the m pairs of main magnetic poles; the parallel excitation winding part comprises m parallel excitation winding units; the m parallel excitation winding units respectively correspond to the m pairs of main magnetic poles; each series excitation winding unit is formed by respectively manufacturing series excitation coils on a pair of corresponding main magnetic poles through insulating conductor strips, each parallel excitation winding unit is formed by respectively manufacturing parallel excitation coils on a pair of corresponding main magnetic poles through insulating conductor strips, and m is a positive integer not less than 2.

Description

technical field [0001] The invention belongs to the field of DC motors, in particular to a parallel-series excited DC motor. Background technique [0002] The parallel-excited DC motor is a compound-excited DC motor, which contains two sets of field windings, namely the parallel field winding and the series field winding. The armature winding of the shunt series excited DC motor is excited in parallel with the shunt field winding and then in series with the series field winding. The magnetic field generated by the series excitation winding and the shunt excitation winding is enhanced in the same direction as a product compound excitation DC motor. The product compound excitation motor combines the advantages of the series excitation DC motor and the shunt excitation DC motor. It has a large starting torque at low speed, and avoids the possibility of flying at high speed under light load. It is especially suitable for the operating conditions of cranes, that is, heavy load a...

AI Technical Summary

Problems solved by technology

At present, the traditional shunt series excited DC motors used in high-power national defense electric equipment have been difficult to cope with the increasingly advanced detection technology.

[0006] Based on the above reasons, the development of high-power shunt-series excited DC motors has been restricted and affected, which has affected economic construction and national defense construction.

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