Abstract
The conventional direct torque control (DTC) of induction motors has become the most used control strategy. This control method is known by its simplicity, fast torque response, and its lack of dependence on machine parameters. Despite the cited advantages, the conventional DTC suffers from several limitations, like the torque ripples. This chapter aims to improve the conventional DTC performances by keeping its advantages. These ripples depend on the hysteresis bandwidth of the torque and the sampling frequency. The conventional DTC limitations can be prevented by increasing the sampling frequency. Nevertheless, the operation with higher sampling frequency is not possible with the software solutions, like the digital signal processor (DSP), due to the serial processing of the implemented algorithm. To overcome the DSP limitations, the field programmable gate array (FPGA) can be chosen as an alternative solution to implement the DTC algorithm with shorter execution time. In this chapter, the FPGA is chosen thanks to its parallel processing.
Published Version
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