Full bridge controllable power generating system employing doubly-salient generator and control method thereof

Abstract

The invention discloses a full bridge controllable power generating system employing a doubly-salient generator. The full bridge controllable power generating system includes a prime motor, the doubly-salient generator, a rectification power circuit and a generator controller. The prime motor drives the doubly-salient generator to rotate. The magnitude and the on-off of exciting current of the doubly-salient generator are controlled by the generator controller. One ends of windings of the doubly-salient generator are connected in a star shape so as to form a winding midpoint while the other ends of the windings are led out to connect with a compensation capacitor in series and then to connect with the input terminal of the rectification power circuit. The output terminal of the rectification circuit is connected with a load through a filtering capacitor and supplies power for the load. According to the invention, the output power of the motor can be increased, the voltage adjustment rate can be reduced and phase current control becomes quicker and more flexible. The invention discloses a control method of the full bridge controllable power generating system employing the doubly-salient generator.

Description

technical field [0001] The invention belongs to a special power generation system, in particular to a double salient motor controllable rectification power generation system and a control method thereof. Background technique [0002] The doubly salient pole motor is a typical variable reluctance motor, and its stator and rotor are both salient pole structures, so that the ratio of the maximum value to the minimum value of the reluctance is the largest, and it has good electromechanical energy conversion characteristics. The doubly salient motor has a simple structure and process, there is no winding on the rotor, and the motor runs stably and reliably. Doubly salient motors can be divided into permanent magnet doubly salient motors, electric excitation doubly salient motors and hybrid excitation doubly salient motors according to the excitation method. The electric excitation double salient pole motor changes the air gap magnetic field by adjusting the excitation current, a...

AI Technical Summary

Problems solved by technology

However, the external characteristics of the full-bridge controllable rectifier are relatively soft, and the voltage adjustment rate is relatively large; for a doubly salient motor with a large number of phase winding turns and a large armature inductance, the inductive reactance of the phase winding makes the full-bridge controllable rectification more effective for power generation The improvement of the motor power is relatively limited, and it is not conducive to the rapid and effective control of the armature current

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