Active type boost converter of switch reluctance generator and control method thereof

A technology of boost converter and switched reluctance, which is applied in the direction of controlling the generator through the change of the magnetic field, adjusting the electric variable, controlling/regulating the system, etc., and can solve problems such as output torque drop and output power limitation
CN107547019AActive Publication Date: 2018-01-05CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2018-01-05

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Abstract

Provided are an active type boost converter of a switch reluctance generator and a control method thereof. A preceding-stage circuit composed of a boost capacitor, a main power switch and a power diode is added at a preceding stage of a traditional three-phase dissymmetrical half-bridge power converter, energy storage of the boost capacitor is regulated and motor excitation and demagnetizing voltage are controlled by controlling the main power switch in the preceding-stage circuit, and then a combined control strategy of a dissymmetrical half-bridge circuit and the preceding-stage circuit is proposed for controlling the power converter. By controlling the power generating power of a dissymmetrical half-bridge circuit regulating system and adjusting the energy flow in the preceding-stage converter, motor excitation and demagnetizing voltage are controlled, meanwhile output voltage ripples of the system can be effectively reduced, and the quality of electric energy is improved.
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Description

technical field

[0001] The invention relates to a switched reluctance generator system, in particular to an active boost converter of a switched reluctance generator and a control method thereof. Background technique

[0002] The power converter is the core unit for driving the switched reluctance motor, and the development of a high-reliability and high-performance power converter is the key to popularize the application of the switched reluctance motor. With the increase of the speed, the system needs a longer angle interval to establish the phase current or complete the freewheeling commutation. Due to the limitation of the topology of the traditional three-phase asymmetrical half-bridge power converter, the output torque of the switched reluctance motor decreases at high speed. , the output power is limited. In order to overcome the problem that the current torque of the switched reluctance motor decreases with the increase of the speed, starting from the topology of th...

Claims

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