Control of Single-Phase AC-DC Converters with High Power Factor: Control Techniques for Better Performance and Added Functionality

Single-phase ac-dc converters with power factor correction steadily increase their presence in industrial and residential equipment due to rising concerns about power quality and harmonic currents in the utility grid. This book presents improvements in control techniques for single-phase unidirectional and bidirectional ac-dc boost converters with high power factor. The generalized average-current-mode control principles developed in this work lead to better performance characteristics such as a wider operating frequency range, reduced distortion of the current waveform, and improved power factor, as well as introduction of new functionality such as capability of reactive power control. Multiple realizations of the proposed control techniques are developed and experimentally verified using unidirectional and bidirectional converter prototypes including a multilevel power stage topology. The book provides examples of applications that benefited from using the proposed control principles. This book could be useful to anyone involved in development of ac-dc converters with high power factor.