Coordinated control method for directly driven permanent magnet synchronous generator under unbalanced and harmonic power grid

摘要: The invention discloses a coordinated control method for directly driven permanent magnet synchronous generator (D-PMSG) under an unbalanced and harmonic power grid. comprises connectinga group of three inlet reactors in series to the three-phase input ends grid-side converter respectively; electrically connecting machine-side through DCbus capacitor back back; D-PMSG output end construct wind set; using winddriven set as part active filter by injecting currents having equal amplitude opposite phase grid side introducing resonant controller machine side, so suppress negative sequence current introduced nonlinear load into common coupling point when voltage is subjected distortion, electromagnetic torque oscillation caused pulsating transmitted from side.