Telescopic double-rotor electric power generator exciting method and electric power generator thereof
A control method, a technology of variable speed and constant frequency, which is applied to the control of generators, control of generators through magnetic field changes, control systems, etc., and can solve frequent gearbox failures, low unit efficiency, and poor working conditions of wind turbines. question
Inactive Publication Date: 2009-07-01
天津市新源电气科技有限公司
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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 speed must be realized through the acceleration of the gear pair of the gearbox; while the working conditions of the wind turbine unit are generally very poor, frequent failures of the gearbox are common
[0006] Products manufactured by conventional technologies have poor reliability, high maintenance costs, and low unit efficiency
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[0042]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.
[0043] like Figure 1-4 As shown, a telescopic double-rotor variable-speed constant-frequency generator includes a generator main body 1 fixed on a base 10, and a generator stator 16 is fixed in a generator main casing 11, wherein,
[0044] The permanent magnet inner rotor 17 is driven by the auxiliary transmission shaft 12 and is installed in the generator main casing in a structure that rotates relative to the stator 16;
[0045] 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 permanen...
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A variable-speed constant-frequency control method for a telescoping double-rotor generator relates to a control method for a variable-speed constant-frequency generator. Among them, the auxiliary drive shaft of the generator is equipped with a permanent magnet inner rotor that is driven by the auxiliary drive shaft and rotates relative to the stator; the main drive shaft of the generator is equipped with an annular rotor that is driven by the main drive shaft and rotates relative to the stator; It is also a structural configuration that surrounds the permanent magnet inner rotor and can rotate around the permanent magnet inner rotor; the main and auxiliary wind rotors are equipped with a main wind rotor speed measurement device and an auxiliary wind rotor speed measurement device that can transmit the speed signal to the centralized control device of the unit. device; the yaw controller is connected with the unit centralized control device to control the downwind rotation of the main wind rotor. In this case, the main wind rotor with a larger diameter is used for power generation, and the auxiliary wind rotor with a smaller diameter is used for adjusting the excitation frequency and power generation. The yaw controller is responsible for controlling the main wind rotor to rotate against the wind in the downwind direction, and the main power generation; The auxiliary wind wheel rotates against the wind in the upwind direction, assisting in power generation, and greatly improving efficiency.
Description
technical field [0001] The invention relates to a wind power generator, in particular to an excitation control method of a variable-speed constant-frequency generator with a telescoping double-rotor excitation structure. 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. power ge...
Claims
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IPC IPC(8): H02P9/04H02P9/14H02J3/38H02K16/00H02K21/12H02K1/27H02K7/18H02K5/16H02K7/10
Inventor 王华君
Owner 天津市新源电气科技有限公司