Title :
Shared switch converter topology for a two phase bipolar drive hybrid stepping motor
Author :
Lee, Po Wa ; Pollock, Charles
Author_Institution :
Dept. of Eng., Warwick Univ., Coventry, UK
Abstract :
A converter topology for two phase, bipolar drive hybrid stepping motors using only six power switches is proposed. The two motor phase windings are connected in series to form three nodes so that only six switches are required for controlling the bi-directional current flow in the windings. The control of current in each winding is coupled by the common node. Detailed design of the control strategy which allows PWM current regulation in each phase is developed. The power converter performance is assessed analytically and the proposed system is demonstrated by both simulation and experimental results
Keywords :
AC motor drives; PWM power convertors; electric current control; machine windings; stepping motors; switching circuits; PWM current regulation; bi-directional current flow control; common node coupling; motor phase windings; power switches; shared switch converter topology; two phase bipolar drive hybrid stepping motor; Bidirectional control; Couplings; Current control; Diodes; Performance analysis; Power engineering and energy; Pulse width modulation; Switches; Switching converters; Topology;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548570
