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This paper presents an improved equivalent input disturbance estimator to solve the influence of unmeasured disturbance on permanent magnet synchronous motors (PMSM). Fuzzy PID controller is designed and the estimator combines state observer and low-pass filter to equivalent the real unknown disturbance to the input disturbance of plant. The controller and estimator satisfy the separation principle...
Running principle of the grid-connection synchronous control of AC-Excited variable-speed constant-frequency (VSCF) wind power generator was discussed. Grid-connection control strategy of generator was investigated based on stator field-oriented vector control technique. The simulation model of grid-connection process of AC-Excited VSCF wind power generator was founded. The simulation result verified...
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