Wind turbine simulator of doubly salient motor and controlling method thereof

Abstract

The invention discloses a wind turbine simulator of a double salient pole motor and a control method thereof, which belong to the wind turbine simulator and the control method thereof. The wind turbine simulator of the double salient pole motor comprises a double salient pole motor, a main power circuit and a control circuit, wherein the main power circuit comprises a power supply and an IPM, and the control circuit comprises a buffer circuit, a failure detector circuit, a current and voltage sampling circuit, a position detecting circuit, a PWM control circuit, an overcurrent and overvoltage protection circuit, an ADC module, a rotating speed computing circuit, a logic control circuit, a torque observer, a capturing unit, a torque loop, a lag loop comparer and a mathematical model of the wind turbine. The control method adopts the manner of double loop control with the inner loop for the torque and the outer loop for the rotating speed, and the current of the double salient pole motor is indirectly controlled through comparing the reference torque with the fedback torque, so as to realize the simulation of the wind turbine. The invention has the advantages that the structure is simple, the force is large, various wind speeds under conditions such as a wind tunnel or a wind field can be simulated, and the invention has large flexibility.

Description

technical field [0001] The invention relates to a wind turbine simulator and a control method thereof, in particular to a wind turbine simulator of a double salient motor and a control method thereof. Background technique [0002] Wind energy is a pollution-free, renewable green energy. The development of wind energy and vigorous development of wind power generation are of great significance for solving the global energy crisis and environmental crisis. In recent decades, wind power generation technology has developed rapidly. Many advanced technologies such as variable pitch control, variable speed and constant frequency power generation, and direct drive without gearbox have been widely used in the field from the laboratory. The preliminary discussion in the laboratory plays an important guiding role in the development of wind power technology. With the hard exploration of scientific researchers, more new technologies and theories are conceived and verified in the laborat...

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Problems solved by technology

However, due to limited conditions, most laboratories do not have wind farm environment or wind turbines, or because the cost of frequent wind tunnel tests is too expensive, the development cost of wind power generation system is high and the development period is long. chamber research poses great difficulties

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