Square wave brushless direct current wind power generation system
A technology of wind power generation system and power generation system, applied in the direction of control system, synchronous generator control, generator control components, etc., can solve problems such as complex hardware circuit, high failure rate, increased control algorithm complexity, etc., to achieve control algorithm Simplicity, improved stability, and low failure rate
Pending Publication Date: 2022-03-04
沈阳永磁电机制造有限公司
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Problems solved by technology
[0006] However, the above method of extracting the commutation signal of the square-wave brushless DC wind power generator is too complex due to the hardware circuit, resulting in high cost and high failure rate of the square-wave brushless DC wind power generation system.
At the same time, because the filtering of the terminal voltage of the square-wave brushless DC wind turbine in the square-wave brushless DC wind power generation system will cause the phase shift of the back-EMF signal, making the back-EMF zero-crossing signal inaccurate, phase compensation is required to increase control algorithmic complexity
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[0027] Below, the present invention will be described in detail with reference to the accompanying drawings.
[0028] Such as figure 1 As shown, this embodiment provides a square-wave brushless DC wind power generation system, including external mechanical equipment such as blades, wind collecting hoods, and columns, a square-wave brushless DC generator and its control system, wherein the rotation of the blades drives Rotation of a square wave brushless DC generator. In this embodiment, the control system includes: the neutral point of the square wave brushless DC wind generator is drawn out, and the phase voltage detection module detects the phase voltage of the square wave brushless DC wind generator; the wind collecting hood The cylinder body is in the shape of a tapered bell mouth, and it is assembled by cutting at least two lobes along the axis of the cylinder body, which is convenient for installation and maintenance.
[0029] Such as Figure 4 As shown, the phase com...
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The invention provides a square-wave brushless direct-current wind power generation system, which comprises a square-wave brushless direct-current generator and a control system thereof, and is characterized in that the control system comprises a commutation control circuit for leading out a neutral point of the square-wave brushless direct-current wind power generator and detecting phase voltage of the square-wave brushless direct-current wind power generator by a voltage detection module. According to the square-wave brushless direct-current wind power generation system, a commutation control circuit in the control system is realized by leading out a neutral point of a square-wave brushless direct-current wind power generator and detecting phase voltage of the square-wave brushless direct-current wind power generator by a voltage detection module. The problems that in the prior art, a virtual neutral point is constructed through a resistor, and the virtual neutral point is not completely equal to a real neutral point, so that the commutation control stability is low, and the circuit is complex are solved, the stability of the square wave brushless direct current wind power generation system is effectively improved, the cost is low, the fault rate is small, and the control algorithm is simple.
Description
technical field [0001] The invention relates to the technical field of power generation, in particular to a square-wave brushless DC wind power generation system. Background technique [0002] Such as figure 1 As shown, the brushless DC wind power generation system is composed of a square wave brushless DC generator and its control system. Among them, the square wave brushless DC wind generator has the advantages of long life, large output torque, high power density and simple control. , Widely used in aerospace and wind power generation and other fields, the control method is divided into square wave brushless DC wind turbine control with position sensor and square wave brushless DC wind turbine control without position sensor. The square-wave brushless DC wind turbine with position sensor is controlled by implanting a Hall sensor inside the generator to detect the position of the rotor, but there are disadvantages such as being susceptible to interference, difficult to wo...
Claims
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IPC IPC(8): H02P6/182H02P9/02
CPCH02P6/182H02P9/02H02P2103/20
Inventor 朴俊民边春元徐宁孙宝鹤姜睿琛
Owner 沈阳永磁电机制造有限公司