Title :
Design of a ZVS PWM inverter for a brushless DC motor in an EMA application
Author :
Bell, Brett J. ; Nelms, R.M. ; Shepherd, Michael T.
Author_Institution :
Dept. of Electr. Eng., Auburn Univ., AL, USA
Abstract :
Electromechanical actuators are being examined as a replacement for the hydraulic systems used in thrust vector control and propellant control valves on space vehicles. The flow of energy from the source to the load in these high power electromechanical systems is controlled via a three-phase inverter. This paper presents an investigation into and design of a zero-voltage switched three-phase inverter for utilization in an electromechanical actuator system. The operation of this inverter is described and design equations are developed. Experimental results from a 5 HP prototype are presented
Keywords :
PWM invertors; actuators; aerospace control; aerospace propulsion; brushless DC motors; electric actuators; machine control; space vehicle power plants; switching circuits; valves; 5 hp; ZVS PWM inverter; brushless DC motor; electromechanical actuators; energy flow; propellant control valves; space vehicles; three-phase inverter; thrust vector control; Brushless DC motors; Control systems; Hydraulic actuators; Hydraulic systems; Machine vector control; Propulsion; Pulse width modulation inverters; Space vehicles; Valves; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1995. APEC '95. Conference Proceedings 1995., Tenth Annual
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2482-X
DOI :
10.1109/APEC.1995.468979
