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Electromagnetic torque control circuit and method

A technology of electromagnetic torque and control method, which is applied to the control of generators, motor generators, electromechanical brakes, etc., which can solve the problems of poor system operation stability and achieve the effect of improving stability

Active Publication Date: 2017-02-15
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides an electromagnetic torque control circuit and method to solve the problem of poor system operation stability that may be caused by relying on generator parameters in the prior art

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] The invention provides an electromagnetic torque control method to solve the problem of poor system operation stability that may be caused by relying on generator parameters in the prior art.

[0055] Specifically, such as figure 1 As shown, the electromagnetic torque control method is applied to the electromagnetic torque control circuit in the fan converter, and the electromagnetic torque control circuit includes a difference comparison unit, a torque...

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Abstract

The invention discloses an electromagnetic torque control circuit and method. On the basis of the existing torque closed-loop control technology, a generator torque current calibration value algorithm is added, torque current calibration values directly act on a control strategy of a torque current inner loop in the prior art, and consequently the closed-loop control over the given main control electromagnetic torque with parameter calibration is achieved, and the operating stability of a whole wind power generation system is effectively improved.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to an electromagnetic torque control circuit and method. Background technique [0002] In wind power generation technology, the current vector control scheme for generator control, in order to realize the fast response electromagnetic torque function, the torque tracking technology generally directly calculates the current need to track according to the command value issued by the main control and the parameters of the generator. Generator electromagnetic torque current value, so as to perform closed-loop control on the torque current of the generator that needs final control. The advantage of this method is that the response is fast and simple, but the disadvantage is that it depends on the parameters of the generator. [0003] In actual engineering applications, when wind farm generators are installed in batches, the parameter consistency of the generators cannot be guarant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00
Inventor 孟祥志杨春源曾凡超王成悦汪令祥邓立荣吴玉杨周俭节
Owner SUNGROW POWER SUPPLY CO LTD