ABSTRACT
Over the last decade, the electric machine industry has been placing more emphasis on variable-and adjustable-speed operations. Developments in power electronics made it possible to achieve these goals. However, this technology produces pollution to the utility grid and raises power quality issues. This chapter describes recent harmonic regulations imposed on power electronic equipments and systems. Merits and demerits of poor power quality drives are also explained. As a solution, various power factor correction (PFC) techniques are introduced for advanced motor drives. Different techniques for active and passive filters, special drive topologies for PFC, and harmonic injection are explained in detail.
