| Abstract |
Switched Reluctance Motors (SRM) have not been
widely deployed in practical applications because of their large
torque ripple, acoustic noise and low power factors. In addition, a
traditional position sensor is required for control. Therefore, an
improved sensorless drive method of SRMs using impressed
voltage pulses, is proposed. The conventional impressed voltage
pulse method suffers from the problem of phase delay because of
low-pass filter utilization. Therefore, in this paper an improved
sensorless driving method, based on the impressed voltage pulse
using new phase-shift circuit technique, overcoming the phase
delay and start-up problem, is proposed. This method can be used
to develop the inductance profile based on the sensorless control
scheme, to run the SRM from standstill to high speed. The
proposed method is implemented in a simple analog circuit
instead of using an expensive DSP. |
