PMSM sensorless vector control system and method
A vector control and sensor technology, applied to vector control systems, control systems, control generators, etc., can solve the problems of phase lag and inability to guarantee convergence to zero, etc., to achieve simple control, reduce cost and size, and improve reliability Effect
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[0025] Combine figure 1 , figure 2 , A PMSM sensorless vector control system, including Clark transformation module, Park transformation module, Park inverse transformation module, pulse width modulation module, inverter module, sliding mode observer, first comparator, second comparator, The third comparator, speed regulator and current regulator; among them,
[0026] The input terminal of the Clark transformation module is connected to the three-phase stator current output terminal of the permanent magnet synchronous motor, and the output terminal of the Clark transformation module is connected to the input terminal of the Park transformation module and the input terminal of the sliding mode observer;
[0027] The d-axis current output terminal of the Park conversion module is connected to the feedback input terminal of the first comparator, and the output terminal of the first comparator is connected to the d-axis voltage input terminal of the Park inverse conversion module thro...
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