A dsp-based space vector modulation direct torque control of ipm synchronous machines

Abstract EN

In this paper a new DTC scheme for interior permanent magnet synchronous machine (IPMSM) is proposed.

The proposed DTC scheme having the advantages of low torque ripples as well as constant switching frequency.

The increment in the switching frequency requires neither an increase of the sampling frequency nor high frequency dithering signal injection.

Here in the proposed scheme, a model based observer is used to generate the optimal reference voltage vector.

Furthermore, a well-developed space vector modulation technique is applied to inverter control in the proposed scheme using a DSP-based hardware, thereby reducing the torque ripples and increasing the switching frequency which becomes constant.

To illustrate the performances of the proposed control scheme, simulation and experimental results are presented.