A hybrid excitation variable frequency AC starter power generation system and its control method

A technology of starting power generation and mixed excitation, which is applied to control generators, control systems, and control generators through changes in the magnetic field. It can solve the problems of increasing the complexity of the system structure and cumbersome excitation control process, and achieve shortened start-up time and simple structure. Reliable, dynamic performance-enhancing effects

CN104702186BActive Publication Date: 2017-10-31NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-10-31

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Abstract

The invention discloses a hybrid excitation type variable frequency AC starting generating system and a control method thereof. The hybrid excitation type variable frequency AC starting generating system comprises a hybrid excitation type variable frequency AC starting generator, a first current sensor for detecting excitation current, a second, current sensor, a third current sensor, three voltage sensors, a position sensor, a changeover switch, a starting switch and a starting generating controller, wherein the second current sensor and the third current sensor are used for detecting armature current. The control method comprises the steps of performing the vector control method based on inverter voltage compensating during starting, and adjusting the excitation current according to the motor armature current and the real-time rotating speed; performing the sectional PI control method based on the output voltage frequency change during generating the power, and adding a load current compensating ring; controlling the changeover switch to switch according to the motor rotating speed and the output voltage during switching from starting to power generation. The method has important application value in the field of aviation independent power starting generating systems.
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Description

technical field

[0001] The invention relates to a starter generating system and a control method thereof, in particular to a hybrid excitation variable frequency AC starter generating system and a control method thereof. Background technique

[0002] Aeroengines are usually equipped with a special starter to start. Commonly used starters include electric starters, gas turbine starters and air turbine starters. When the engine is started, it drives another special generator to generate electricity. Such a power supply system includes a starter and a generator, and the starter only plays a role in the starting process. For electric starting technology, a motor works in the electric state during the starting process to realize the starting of the engine, and after the engine is successfully started, it works in the power generation state, realizing the dual functions of starting and power generation, effectively reducing the system weight, increasing system reliability. [00...

Examples

Embodiment Construction

[0036] The hybrid excitation variable frequency AC starting power generation system and its control method provided by the present invention, in order to make the object, technical scheme and effect of the present invention more clear and definite, and refer to the accompanying drawings and give examples to further describe the present invention in detail. It should be understood that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0037] figure 1 It is a structural diagram of Embodiment 1 of the hybrid excitation variable frequency AC starter power generation system of the present invention, which consists of a hybrid excitation variable frequency AC starter generator, a first current sensor used to detect the excitation current, and a second and third current sensor used to detect the armature current sensor, three voltage sensors, a position sensor, a transfer switch, a start switch and a starte...