Four-quadrant sensorless brushless ECM drive Conference Paper uri icon

abstract

  • A four-quadrant brushless electronically commutated motor (ECM) drive is presented which provides high-quality torque control without discrete current sensors or a rotor position sensor. Rotor position feedback is developed by extracting sufficient information from the motor back-EMF voltage waveforms, and current feedback is provided by current sensors integrated into MOS-gated power switches (MOSFETs or IGBTs). Controller parts count is minimized using a custom VLSI chip which performs the rotor position sensing, pulse-width-modulated (PWM) current regulation, and various protection functions. The interface between the low-power logic and inverter power switches is accomplished using a high-voltage integrated circuit (HVIC) gate driver for each of the three phase legs. Experimental results using a compact prototype ECM drive card are presented which demonstrate the desired four-quadrant performance without discrete sensors.

name of conference

  • [Proceedings] APEC '91: Sixth Annual Applied Power Electronics Conference and Exhibition

published proceedings

  • [Proceedings] APEC '91: Sixth Annual Applied Power Electronics Conference and Exhibition

author list (cited authors)

  • Becerra, R. C., Jahns, T. M., & Ehsani, M.

citation count

  • 117

complete list of authors

  • Becerra, RC||Jahns, TM||Ehsani, M

publication date

  • January 1991