D.C. motor drives
Abstract
Our focus here is on the power electronic converter/d.c. motor drive, which, although no longer pre-eminent, is—like the d.c. motor itself—an ideal learning vehicle. We look at the structure and operation of the converter in motoring and generating modes; introduce four-quadrant operation, and explore the effects of the less-than-ideal waveforms on the motor and on the supply. The benefits of a two-loop speed control system (which is reflected in the majority of other motor drives) are explained.
Keywords
D.C. motor drive; Speed control; Current control; Torque control; Waveform ripple; Discontinuous current; Power factor; Harmonics
4.1 Introduction
Until the 1960s, the only satisfactory way of obtaining the variable-voltage ...
Get Electric Motors and Drives, 5th Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
