Comprehensive method for vector and direct torque control on doubly-fed wind generator
A doubly-fed wind power generation and direct torque control technology, which is applied in motor generator control, vector control system, AC motor control, etc., can solve the problems of long control time and time response speed that cannot meet the control requirements of wind power generation system, etc.
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[0042] Below in conjunction with embodiment, the present invention is further described in detail.
[0043] The integrated method for vector and direct torque control of a doubly-fed wind turbine in this embodiment includes the following steps:
[0044] a) Establish the traditional vector control mathematical model of the doubly-fed wind turbine in a stable operation state, collect the three-phase a, b, c AC currents and voltages of the doubly-fed wind turbine in real time, and convert the current and voltage into control according to the vector control mathematical model The d-axis current and voltage components of the synthetic rotating magnetic flux of the DFIG stator and the q-axis components that control the electromagnetic torque of the DFIG; the d- and q-axis components are controlled by pulse width modulation (PWM) to control the voltage and current of the d and q-axis components. Adjust the grid of the corresponding insulated gate bipolar transistor (IGBT) switch in t...
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