A Voltage Control Strategy for DSTATCOM Based on Balance of Instantaneous Power and Negative Sequence Feedforward Control[J]. High voltageapparatus, 2008, (5): 392-394+398.
A Voltage Control Strategy for DSTATCOM Based on Balance of Instantaneous Power and Negative Sequence Feedforward Control[J]. High voltageapparatus, 2008, (5): 392-394+398.DOI:
The DSTATCOM regulates the voltage of the common coupling point(PCC)by injecting reactive power to it for meeting the requirement of voltage.Based on the balance of the instantaneous power of the DSTATCOM system
a direct output voltage control strategy for voltage control is proposed without current detection circuit.Compared with the cascade control strategy
the proposed one has the merits of simple structure and fast response time.On the basis of direct voltage control
the negative sequence voltage feedforward control is introduced to overcome the overcurrent of DSTATOCM when the main voltage is unbalanced.The effectivity and validity of the present control strategy is verified by the theoretic analysis and digital simulation.The control strategy presented in this paper can be used in development of DSTATOCM.