Wind turbine simulator without operating rotating speed differential and control method thereof

A differential calculation and wind turbine technology, applied in the direction of single motor speed/torque control, electronic commutator, etc., can solve the problems of phase shift of frequency domain characteristics of speed, non-universal applicability, unstable system oscillation, etc., to achieve Effect of reducing phase shift, improving adaptability and accuracy, and reducing influence

Inactive Publication Date: 2013-05-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The existing wind turbine simulator introduces a differential link when calculating the compensation torque, and the differential link is easy to introduce noise, which will cause system oscillation or even instability
In order to reduce the system oscillation problem caused by the differential calculation, a low-pass filter link is added after the differential calculation, bu

Method used

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  • Wind turbine simulator without operating rotating speed differential and control method thereof
  • Wind turbine simulator without operating rotating speed differential and control method thereof
  • Wind turbine simulator without operating rotating speed differential and control method thereof

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Embodiment Construction

[0036] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0037] The mechanical equation of motion of the actual wind turbine system:

[0038] T WT - T g = ( J WT + J g ) dω dt + ( B WT + B g ) ω - - - ( 1 )

[0039] Among them, T WT is the output torque of the wind turbine, T g is the electromagnetic torque of the wind turbine, J WT and J g are the moments of inertia of the wind turbine and wind generator, respectively, B WT and B ...

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Abstract

The invention discloses a wind turbine simulator without operating rotating speed differential and a control method of the wind turbine simulator without operating rotating speed differential and belongs to the technical field of motor control. The wind turbine simulator comprises a direct current power supply, a three-phase inverter, a motor and a control circuit. The control circuit comprises an isolated driving circuit, a voltage and current sampling circuit, a position detecter, a velocity calculation circuit, a torque observer, a wind turbine torque calculation module, a first summator,an integrator, a second summator, a multiplying unit, a mechanical friction compensation module and a rotational inertia compensation module. The control method considers the influence of mechanical friction coefficient and rotational inertia and obtains driving signals of the isolated driving circuit according to the rotating speed of the motor, three-phase input voltage and three-phase input electrical current calculation torque of the motor. The wind turbine simulator without operating the rotating speed differential and the control method of the wind turbine simulator without operating the rotating speed differential reduces the influence which the differential operation exerts on the stability of the system, reduces phase shift of the rotating speed on a frequency domain and increases precision and adaptability of the simulator.

Description

technical field [0001] The invention discloses a wind turbine simulator and a control method thereof which do not need differential operation of the rotational speed, and belongs to the technical field of motor control. Background technique [0002] In order to alleviate the energy crisis and environmental crisis, more and more scholars are committed to the research and utilization of new energy sources such as wind energy, solar energy, and tidal energy. With the development of control technology, it has become more and more mature, and it has become one of the technologies with the most large-scale development conditions and commercial development prospects. [0003] In order to further improve the efficiency and reliability of the wind power system and reduce the system cost, the laboratory's early exploration and research play an important guiding role in the development of wind power technology. It is the most direct and the most authentic and credible situation to con...

Claims

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Application Information

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IPC IPC(8): H02P6/08H02P6/17
Inventor 刘颖周波郭鸿浩许恩利杨溢炜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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