Capacitance compensation circuit structure applied to doubly salient DC generator

Abstract

The invention discloses a capacitance compensation circuit structure applied to a doubly salient generator. For a three-phase doubly salient generator adopting a full bridge rectification or half bridge rectification way, a Y-shaped or triangular capacitance compensation circuit structure is adopted. For the doubly salient generator of which armature windings of each phase adopt a single-phase full bridge rectification way, a circuit structure of which each phase is connected in parallel with compensation capacitors is adopted. In the circuit structure for a four-phase doubly salient generator adopting the full bridge rectification or half bridge rectification way, the output ends of the armature windings of an AC phase and a BD phase with the difference of 180 degrees are bridged with the compensation capacitor respectively. In the circuit structure for a five-phase doubly salient generator adopting the full bridge rectification or half bridge rectification way, the output ends of the armature windings of the AC phase, the BD phase, a CE phase, a DA phase and an EB phase with the difference of approaching to 180 degrees are bridged with the compensation capacitor respectively. The capacitance compensation circuit structure can increase a power factor of the generator, thereby increasing the power density of the doubly salient generator.

Description

technical field [0001] The capacitance compensation circuit structure of a doubly salient DC generator related to the invention belongs to the field of doubly salient DC generators. technical background [0002] Professor Lipo of the University of Wisconsin-Madison in the United States added permanent magnet excitation to the switched reluctance motor, and proposed a permanent magnet double salient pole motor. The motor belongs to a variable reluctance motor. Its stator and rotor are salient pole structures, which are made of silicon steel sheets. The structure is simple. There is no winding on the rotor, so it has high reliability. [0003] Electric excitation double salient pole motor ("double salient pole brushless DC generator", Chinese invention patent: application date June 9, 1999, authorized announcement number CN1099155C) replaces permanent magnet with electric excitation winding, so that the excitation magnetic field of the motor can be adjust. When working as a ...

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Problems solved by technology

[0005] Regardless of the structure of the doubly salient motor, it has the characteristics of large armature inductance. When a simple rectifier circuit is used, the power factor angle between the phase electromotive force and the phase current is large, and the power factor is low; making the doubly convex motor using a simple diode rectifier circuit The power density of the pole power generation system is too low

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