PWM converter, active filter and harmonic compensation method

In the embodiment of the invention, when a system is in a fault-free state, a voltage signal and a current signal of a compensated object are detected, calculation is carried out based on the voltage signal and the current signal to obtain a harmonic component and a reactive component, and a compens...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MA JIALIU, HUO XIAOWEI, GAO RUIJIN, LIU YUBING, WANG LIN, GAO LIQUAN, DAI GUISHENG, LIU YING, GAO SHENGQIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	In the embodiment of the invention, when a system is in a fault-free state, a voltage signal and a current signal of a compensated object are detected, calculation is carried out based on the voltage signal and the current signal to obtain a harmonic component and a reactive component, and a compensation instruction current signal is determined based on the harmonic component and the reactive component; based on the compensation instruction current signal, outputting a compensation current to execute filtering and reactive compensation on the compensated object; judging the compensation instruction current signal to determine a judgment result, and outputting a PWM (Pulse Width Modulation) driving signal according to the judgment result; and on-off of the PWM converter is controlled based on the PWM driving signal, so that the numerical value of the compensation current is adjusted in real time. Therefore, the suppression and reactive power compensation of the dynamic harmonic waves processed by the movable f