Driving Control Technologies of New High-Efficient Motors

Abstract

Although induction motor is the most commonly used actuator in the industry, its efficiencies are difficult to upgrade due to the existence of rotor copper losses. Permanent-magnet synchronous motor (PMSM) and synchronous reluctance motor (SynRM) are the two new motors being able to achieve the IE4-class and even the IE5-class efficiency. As to the switched reluctance motor (SRM), it lacks commercialized motors and power modules being available. For establishing high-performance PMSM and SynRM drives, many key affairs must be properly treated, which are introduced in this article. The contents presented in this chapter include: (1) interdisciplinary affairs of motor drives, (2) comparative characteristics and applications of commonly used motors, (3) reversible and generator operations for specific motors, (4) power electronic converters for motor drives, (5) possible new high-efficient motor drives, (6) PMSM drives, (7) SynRM drives, (8) some key issues of PMSM drives, (9) some key issues of SynRM drives, (10) example of PMSM drive, and (11) example of SynRM drive.