Input-current-clamping: an inexpensive novel control technique to achieve compliance with harmonic regulations

This paper introduces a new simplified control technique for high-quality rectifiers. The technique, called “input-current-clamping”, requires only a low-cost controller, while it ensures compliance with existing harmonic regulations. The authors present the regulations, the idealized waveforms obtainable with the proposed technique, the spectra of those waveforms, the maximum compliant power for the different waveforms, and the real waveforms obtainable with the boost and the buck rectifier circuits, when the duty ratio is limited to less than unity. They also present experimental results for a boost circuit