This book covers instantaneous power theory as well as the importance of design of shunt, series, and combined shunt-series power active filters and hybrid passive-active power filters * Illustrates pioneering applications of the p-q theory to power conditioning, which highlights distinct differences from conventional theories * Explores p-q-r theory to give a new method of analyzing the different powers in a three-phase circuit * Provides exercises at the end of many chapters that are unique to the second edition