Constant frequency exciting method for telescope double rotor fan speed changing and its control system

A technology of variable speed and constant frequency control of fans, applied in control systems, control of wind turbines, and mechanical energy control, etc., can solve the problems of low speed of wind turbines, failure to reach the speed of high-speed generators, frequent failures of gearboxes, etc.

Active Publication Date: 2007-07-25
天津市金天马电材电器有限公司 +1
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  • Application Information

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Problems solved by technology

[0005] It is known that the wind turbine transmits the power generated by the wind rotor under the action of the wind to the generator through the gearbox and makes it obtain a corresponding speed; usually the speed of the wind rotor is very low, which is far below the power generation required by the high-speed generator The s

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  • Constant frequency exciting method for telescope double rotor fan speed changing and its control system
  • Constant frequency exciting method for telescope double rotor fan speed changing and its control system
  • Constant frequency exciting method for telescope double rotor fan speed changing and its control system

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Embodiment Construction

[0050] The specific implementation, structure, features and effects provided by the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0051] As shown in Figures 1-4, a telescopic double-rotor variable-speed constant-frequency generator includes a generator body 1 fixed on a base 10, and a generator stator 16 fixed in a casing 11 of the generator body, wherein ,

[0052] The permanent magnet inner rotor 17 is driven by the auxiliary drive 12 and rotates relative to the stator 16, and is installed in the main casing of the generator;

[0053] The ring rotor 14 is driven by the main transmission shaft 13, the ring rotor is a structural device that surrounds and can rotate around the permanent magnet inner rotor, and the ring rotor 14 is configured to rotate relative to the stator 16; the ring rotor 14 is supported by the ring rotor The unit 140 surrounds the aforementioned permanent magnet inner rotor 1...

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Abstract

Being rotated to stator relatively, permanent magnet inner rotor driven by counter drive shaft (CDS) is configured on CDS of generator. Being rotated to stator relatively, ring shaped rotor driven by main drive shaft (MDS) is configured on MDS of generator. The ring shaped rotor is in structure and configuration of surrounding the inner rotor, and rotating around the inner rotor. Possessing Pg pair of pole, and Nzr rotating speed under action of wind power, main wind wheel is collocated on MDS. Subsidiary wind wheel collocated on end of CDS drives reverse rotary of the inner rotor in Ne speed related to the main wind wheel. Features are: operation in variable speed constant frequency (VSCF), adjustable airscrew pitch, no gear case and direct driving, no need of convertor assembly in large capacity so as to raise reliability greatly. Comparing with single wind wheel VSCF set, the dual wind wheels VSCF set raises use ratio of wind energy largely.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a variable-speed constant-frequency excitation method with a telescoping double-rotor excitation structure and a control system thereof. Background technique [0002] Known technology such as Chinese patent CN200510022771.1 discloses a variable-speed constant-frequency method for wind power generation, which is characterized in that first, the speed of the wind turbine rotor is increased through the speed-increasing gearbox, and then the input power generated by the variable speed is input into the differential The input shaft of the permanent magnet motor is divided or merged by the differential mechanism of the differential permanent magnet motor to generate power flow into the stator winding of the differential permanent magnet motor through the feeder to realize constant speed and constant frequency power generation to the power grid, so as to improve the power generation system. pow...

Claims

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Application Information

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IPC IPC(8): H02P9/06H02K16/02H02K7/14F03D7/04
CPCY02E10/723Y02E10/72
Inventor 王华君
Owner 天津市金天马电材电器有限公司
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