Implementation of direct torque control of induction machines utilizing Digital Signal Processor (DSP) and Field Programmable Gate Arrays (FPGA)
This thesis presents the implementation of a high performance Direct Torque Control (DTC) of induction machine (IM) drives. A summary of the theoretical aspects and principles of DTC are given with emphasis on two major problems, i.e. high torque ripple and variable switching frequency. In order to...
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myutmep.419520180116T03:45:21Z Implementation of direct torque control of induction machines utilizing Digital Signal Processor (DSP) and Field Programmable Gate Arrays (FPGA) 200505 Toh, Chuen Ling TK Electrical engineering. Electronics Nuclear engineering This thesis presents the implementation of a high performance Direct Torque Control (DTC) of induction machine (IM) drives. A summary of the theoretical aspects and principles of DTC are given with emphasis on two major problems, i.e. high torque ripple and variable switching frequency. In order to solve these problems, this thesis proposed a pair of torque and flux controllers to replace the hysteresisbased controllers. The proposed torque controller consists of a PI controller, 2 triangular carrier generators and a pair of comparator. It produces three level output, namely â€“1, 0, and 1, which is similar to the three level hysteresis comparator. The proposed flux controller works similar to the torque controller and consists of a proportional controller, a single triangular carrier generator and a comparator. The output is switched between 1 and 0 similar to the twolevel hysteresis comparator. The design of these controllers is thoroughly discussed and is applied to a Â¼ HP squirrel cage IM. The simulation of the proposed controllers applied to the DTC drive is presented. The simulation results are then verified by experimental results. The main components of the hardware are implemented using DSP TMS320C31 and Altera FPGA devices. The DSP is used to estimate the torque and flux while the FPGA is responsible in generating the triangular carriers, selecting the appropriate voltage vectors and generating the blanking time for the 3phase VSI. The results prove that 80% of torque ripple reduction is obtained while the stator flux ripples also manage to achieve 57% of reduction. Furthermore, the switching frequency is fixed at 10.4 kHz and a smoother sinusoidal phase current is obtained. 200505 Thesis http://eprints.utm.my/id/eprint/4195/ http://eprints.utm.my/id/eprint/4195/1/TohChuenLingMFKE2005.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering 
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Universiti Teknologi Malaysia 
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UTM Institutional Repository 
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TK Electrical engineering Electronics Nuclear engineering 
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TK Electrical engineering Electronics Nuclear engineering Toh, Chuen Ling Implementation of direct torque control of induction machines utilizing Digital Signal Processor (DSP) and Field Programmable Gate Arrays (FPGA) 
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This thesis presents the implementation of a high performance Direct Torque Control (DTC) of induction machine (IM) drives. A summary of the theoretical aspects and principles of DTC are given with emphasis on two major problems, i.e. high torque ripple and variable switching frequency. In order to solve these problems, this thesis proposed a pair of torque and flux controllers to replace the hysteresisbased controllers. The proposed torque controller consists of a PI controller, 2 triangular carrier generators and a pair of comparator. It produces three level output, namely â€“1, 0, and 1, which is similar to the three level hysteresis comparator. The proposed flux controller works similar to the torque controller and consists of a proportional controller, a single triangular carrier generator and a comparator. The output is switched between 1 and 0 similar to the twolevel hysteresis comparator. The design of these controllers is thoroughly discussed and is applied to a Â¼ HP squirrel cage IM. The simulation of the proposed controllers applied to the DTC drive is presented. The simulation results are then verified by experimental results. The main components of the hardware are implemented using DSP TMS320C31 and Altera FPGA devices. The DSP is used to estimate the torque and flux while the FPGA is responsible in generating the triangular carriers, selecting the appropriate voltage vectors and generating the blanking time for the 3phase VSI. The results prove that 80% of torque ripple reduction is obtained while the stator flux ripples also manage to achieve 57% of reduction. Furthermore, the switching frequency is fixed at 10.4 kHz and a smoother sinusoidal phase current is obtained. 
format 
Thesis 
qualification_level 
Master's degree 
author 
Toh, Chuen Ling 
author_facet 
Toh, Chuen Ling 
author_sort 
Toh, Chuen Ling 
title 
Implementation of direct torque control of induction machines utilizing Digital Signal Processor (DSP) and Field Programmable Gate Arrays (FPGA) 
title_short 
Implementation of direct torque control of induction machines utilizing Digital Signal Processor (DSP) and Field Programmable Gate Arrays (FPGA) 
title_full 
Implementation of direct torque control of induction machines utilizing Digital Signal Processor (DSP) and Field Programmable Gate Arrays (FPGA) 
title_fullStr 
Implementation of direct torque control of induction machines utilizing Digital Signal Processor (DSP) and Field Programmable Gate Arrays (FPGA) 
title_full_unstemmed 
Implementation of direct torque control of induction machines utilizing Digital Signal Processor (DSP) and Field Programmable Gate Arrays (FPGA) 
title_sort 
implementation of direct torque control of induction machines utilizing digital signal processor (dsp) and field programmable gate arrays (fpga) 
granting_institution 
Universiti Teknologi Malaysia, Faculty of Electrical Engineering 
granting_department 
Faculty of Electrical Engineering 
publishDate 
2005 
url 
http://eprints.utm.my/id/eprint/4195/1/TohChuenLingMFKE2005.pdf 
_version_ 
1747814501775835136 