Rectifiers for electronic D-C motor drives

THE USE of rectifiers for d-c motor control is a natural development because of their ease of control, high speed of response, and use of all static components. The economics of d-c motor drive applications showed that 550 volts direct current would give the best return. Standard rectifier equipment has been developed which delivers 550 volts direct current directly from a 460-volt 3-phase power system by using a 3-phase double-way (full-wave) rectifier power circuit. The majority of d-c motor drive applications can be supplied from 150-kw, 300-kw, or 500-kw power units.