Passive techniques for compliance of single-phase rectifiers with IEC 1000-3-2 norms

A single-phase rectifier is often a front-end power stage for many power electronic circuits. The single-phase rectifier with capacitor filter generates high harmonic currents in the ac line that is unacceptable by the IEC 1000-3-2 harmonic-current-limit specifications. Passive circuits can achieve requisite compliance at low cost, with simplicity and reliability. Various techniques of the passive input-current-shaping are reviewed in this paper. Their design for compliance is presented.