Title :
Efficiency issues in variable-capacitance micromotor drives
Author :
Chapman, Patrick L.
Author_Institution :
Grainger Center for Electr. Machines & Electromechanics, Illinois Univ., Urbana, IL
Abstract :
Efficiency issues of variable-capacitance micromotors are discussed in context of combined drive and motor interaction. It is shown that variable-capacitance motors ideally have nearly perfect energy conversion efficiency and constant torque if constant voltage is applied. However, the drive system consisting of both the motor and electronics is not ideal when considering different methods for charging capacitive devices. Constant-voltage vs. constant-current charging is explored. Simulation is used to clarify the theoretical concepts discussed
Keywords :
capacitance; direct energy conversion; micromotors; motor drives; constant torque; constant voltage charging; constant-current charging; energy conversion efficiency; variable-capacitance micromotor drives; Drives; Electric breakdown; Electrostatic actuators; Induction motors; Magnetic flux; Magnetic separation; Micromotors; Power electronics; Reluctance motors; Voltage;
Conference_Titel :
Electric Machines and Drives, 2005 IEEE International Conference on
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-8987-5
Electronic_ISBN :
0-7803-8988-3
DOI :
10.1109/IEMDC.2005.195862
