Abstract ▼ AI-Helper

This paper describes voltage-controlled delta modulation technique for active power filters, which is to control the harmonic-compensating current indirectly by adjusting the capacitor voltage to be sinusoidal. The overall control system has two feedback loops : one is the outer proportional feedbac...

This paper describes voltage-controlled delta modulation technique for active power filters, which is to control the harmonic-compensating current indirectly by adjusting the capacitor voltage to be sinusoidal. The overall control system has two feedback loops : one is the outer proportional feedback fur loop regulating the do current of the active filter and the other is the inner feedback loop for maintaining the ac current waveform to be sinusoidal, and also to have zero power factor angle (unity power factor). The characteristics of the proposed scheme are investigated by digital simulation using ACSL and also simple experimental results are shown to verify the theoretical results.

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