ABSTRACT
DSP-BASED CONTROL OF PERMANENT MAGNET SYNCHRONOUS
MACHINES
12.1 Introduction As described in Chapter 9, the permanent magnet synchronous motor (PMSM)
is a PM motor with a sinusoidal back-EMF. Compared to the BLDC motor, it has less torque ripple because the torque pulsations associated with current commutation do not exist. A carefully designed machine in combination with a good control technique can yield a very low level of torque ripple (<2% rated), which is attractive for high-performance motor control applications such as machine tool and servo applications.
