Adaptive high-voltage frequency conversion turning method

A high-voltage variable frequency, self-adaptive technology, applied in electrical components, control systems, AC motor control, etc., can solve problems such as unstable rotor speed, and achieve the effect of solving unstable rotor speed.

Inactive Publication Date: 2016-03-02
广西南宁西格汇居电子科技有限公司
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Problems solved by technology

[0003] The invention solves the problem that the rotor speed is unstable during the process of switching between automatic and manual operation when the hydraulic generator is cranked
[0005] The beneficial effect of the present invention is that it solves the problem of unstable rotor speed in the process of switching between automatic and manual operation when the hydraulic generator is cranked

Method used

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  • Adaptive high-voltage frequency conversion turning method

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Embodiment Construction

[0007] exist figure 1 Among them, the cranking main control module (2) receives the stator magnetic field pole data of the speed measuring device through the rotor speed measuring interface (1), the speed data is processed by frequency algorithm to obtain the corresponding frequency suitable for the speed, and the calculated frequency signal is sent to To the frequency conversion control module (3), the frequency conversion control module (3) controls the rotor circuit (6) of the hydro-generator through the DC-to-AC module (5), and the frequency algorithm calculates the rotor speed from the magnetic pole data of the stator magnetic field through the algorithm, and calculates the rotor speed according to the speed The switch switching frequency required by the frequency conversion control module is obtained, so as to realize more precise stepless frequency conversion speed control.

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Abstract

The invention discloses an adaptive high-voltage frequency conversion turning method, which provides a solution scheme of adaptively controlling a rotation speed of a rotor in the case of turning of a hydrogenerator. The method comprises the following steps: a turning main control module (2) receives stator magnetic field magnetic pole data of a speed measurement device via a rotor speed measurement interface (1), a corresponding frequency adapted to the rotation speed is obtained through processing and sent to a frequency conversion control module (3), the frequency conversion control module (3) controls a hydrogenerator rotor circuit (6) through a DC-to-AC module (5), and thus the rotation speed of the hydrogenerator rotor is stably controlled. The problem of the instable rotor rotation speed during an automatic and manual operation switching process in the case of turning of the hydrogenerator can be solved.

Description

technical field [0001] The technical solution of the invention belongs to the technical field of power electronics, is an adaptive high-voltage variable frequency cranking method, and provides a set of solutions for adaptively controlling the rotational speed of a rotor when cranking a hydraulic generator. Background technique [0002] When cranking the hydro-generator set in a hydropower plant, the cranking control circuit is required to rotate the rotor of the hydro-generator. During the automatic jogging switching process, the rotor rotation may be unstable. The solution of self-adaptive control of rotor speed during cranking solves the problem of unstable rotor speed during switching between automatic and manual operation of the hydro-generator during cranking. Contents of the invention [0003] The invention solves the problem that the rotating speed of the rotor is unstable during the process of switching between automatic and manual operation when the hydraulic gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06
Inventor 李捷
Owner 广西南宁西格汇居电子科技有限公司
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