The HVRT Control Strategy of Direct-Driven PMSG Based on Proportional-Resonant Controller

doi:10.11985/2018.03.001

Abstract

Abstract:

Put forward a HVRT control strategy of direct-driven PMSG based on proportional resonant controller. Based on the extent of grid voltage swell, the grid side converter give priority to output certain inductive reactive current to the fault grid. The super-capacitor stores energy to stabilize the DC bus voltage when the DC voltage exceed the limit. Proportional resonant (PR) controller can control the AC input signal without static difference in stationary reference frame. Compared with the traditional PI control strategy, this strategy reduces the coordinate rotation transform, does not have coupling terms and feed-forward compensation terms which is affected by the temperature and the circuit parameters. The simulation results show that the control strategy can not only ensure the direct-driven PMSG in continuous operation during the fault, but also can make the system provides inductive reactive power for the recovery of the grid voltage.

Key words: Permanent magnet synchronous generation, high voltage ride through, proportional resonant

CLC Number:

TM614

Mingrui Zhang,Fen Wei. The HVRT Control Strategy of Direct-Driven PMSG Based on Proportional-Resonant Controller[J]. Journal of Electrical Engineering, 2018, 13(3): 1-8.

Figures/Tables 12

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