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A new self-recovery compensation and control strategy suitable for dynamic voltage regulator (DVR) supplied by DC-capacitor was proposed. Two compensation stages which were transient compensation stage and recovery compensation stage were included in the strategy. The maximum energy compensation strategy which could maximize the exchange active power between the equipment's DC-capacitor and its outside...
Theoretical and simulated analysis on the injection circuit parameters of the Controllable Custom Power Quality Disturbance-Generator which is designed as differentiation cascade type has been done. The topology has three modules: fundamental-frequency module, high-frequency module and rectifier module. The theoretical analysis results have shown that the regulation precision of output of the fundamental-frequency...
The minimum energy compensation strategy and its characteristic for Dynamic Voltage Restorer (DVR) considering the equipment's voltage limitation are discussed. The strategy when the injection voltage is under or especially above the voltage limitation is proposed. And the detailed expressions of the strategy which show that the compensation effect is influenced by three factors - magnitude of the...
It is difficult to find a reasonable and accepted index to evaluate the comprehensive level of power quality because of the great difference in characteristics and effects among all the individual problems. A new evaluation method is proposed which responses to what the customers care, based on the economical considerations. Example is given to show the advantages of the proposed method, including...
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