FPGA based high precision torque and flux estimator of direct torque control drives
This paper presents an improved FPGA-based torque and stator flux estimators for direct torque control (DTC) induction motor drives, which permit very fast calculations. The improvements are performed by 1) using two's complement fixed-point format approach to minimize calculation errors and th...
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| Format: | Conference or Workshop Item |
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2011
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| _version_ | 1796858841246203904 |
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| author | Jidin, Aiman Zakwan Daud, Mohd Zaki Nik Idris, Nik Rumzi Sutikno, Tole |
| author_facet | Jidin, Aiman Zakwan Daud, Mohd Zaki Nik Idris, Nik Rumzi Sutikno, Tole |
| author_sort | Jidin, Aiman Zakwan |
| collection | ePrints |
| description | This paper presents an improved FPGA-based torque and stator flux estimators for direct torque control (DTC) induction motor drives, which permit very fast calculations. The improvements are performed by 1) using two's complement fixed-point format approach to minimize calculation errors and the hardware resources usage in all operations, 2) calculating the discrete integration operation of stator flux using backward Euler approach, 3) modifying the non-restoring method to calculate complicated square root operation of stator flux, 4) introducing a new sector judgment method, and 5) reducing the sampling frequency down to 5μs. To avoid saturation due to DC offset present in the sensed currents, the LP Filter is applied. The simulation results of DTC model in MATLAB/Simulink, which performed double-precision calculations, are used as references to digital computations executed in FPGA implementation. The Hardware-in-the-loop (HIL) method is used to verify the minimal error between MATLAB/Simulink simulation and the experimental results, and thus the well functionality of the implemented estimators. |
| first_indexed | 2024-03-05T19:18:22Z |
| format | Conference or Workshop Item |
| id | utm.eprints-45881 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:18:22Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | utm.eprints-458812017-07-20T06:48:08Z http://eprints.utm.my/45881/ FPGA based high precision torque and flux estimator of direct torque control drives Jidin, Aiman Zakwan Daud, Mohd Zaki Nik Idris, Nik Rumzi Sutikno, Tole TK Electrical engineering. Electronics Nuclear engineering This paper presents an improved FPGA-based torque and stator flux estimators for direct torque control (DTC) induction motor drives, which permit very fast calculations. The improvements are performed by 1) using two's complement fixed-point format approach to minimize calculation errors and the hardware resources usage in all operations, 2) calculating the discrete integration operation of stator flux using backward Euler approach, 3) modifying the non-restoring method to calculate complicated square root operation of stator flux, 4) introducing a new sector judgment method, and 5) reducing the sampling frequency down to 5μs. To avoid saturation due to DC offset present in the sensed currents, the LP Filter is applied. The simulation results of DTC model in MATLAB/Simulink, which performed double-precision calculations, are used as references to digital computations executed in FPGA implementation. The Hardware-in-the-loop (HIL) method is used to verify the minimal error between MATLAB/Simulink simulation and the experimental results, and thus the well functionality of the implemented estimators. 2011 Conference or Workshop Item PeerReviewed Jidin, Aiman Zakwan and Daud, Mohd Zaki and Nik Idris, Nik Rumzi and Sutikno, Tole (2011) FPGA based high precision torque and flux estimator of direct torque control drives. In: IEEE Applied Power Electronics Colloqium (IAPEC). http://dx.doi.org/10.1109/IAPEC.2011.5779871 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Jidin, Aiman Zakwan Daud, Mohd Zaki Nik Idris, Nik Rumzi Sutikno, Tole FPGA based high precision torque and flux estimator of direct torque control drives |
| title | FPGA based high precision torque and flux estimator of direct torque control drives |
| title_full | FPGA based high precision torque and flux estimator of direct torque control drives |
| title_fullStr | FPGA based high precision torque and flux estimator of direct torque control drives |
| title_full_unstemmed | FPGA based high precision torque and flux estimator of direct torque control drives |
| title_short | FPGA based high precision torque and flux estimator of direct torque control drives |
| title_sort | fpga based high precision torque and flux estimator of direct torque control drives |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| work_keys_str_mv | AT jidinaimanzakwan fpgabasedhighprecisiontorqueandfluxestimatorofdirecttorquecontroldrives AT daudmohdzaki fpgabasedhighprecisiontorqueandfluxestimatorofdirecttorquecontroldrives AT nikidrisnikrumzi fpgabasedhighprecisiontorqueandfluxestimatorofdirecttorquecontroldrives AT sutiknotole fpgabasedhighprecisiontorqueandfluxestimatorofdirecttorquecontroldrives |