Maximum torque-per-Amp control for traction IM drives: theory and experimental results
A novel maximum torque per Ampere (MTPA) controller for induction motor (IM) drives is presented. It is shown to be highly suited to applications that do not demand an extremely fast dynamic response, for example electric vehicle drives. The proposed MTPA field oriented controller guarantees asympto...
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| Format: | Article |
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IEEE
2017
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| Online Access: | https://eprints.nottingham.ac.uk/38586/ |
| _version_ | 1848795646456233984 |
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| author | Bozhko, Serhiy Dymko, Serhii Kovbasa, Serhii Peresada, Sergei |
| author_facet | Bozhko, Serhiy Dymko, Serhii Kovbasa, Serhii Peresada, Sergei |
| author_sort | Bozhko, Serhiy |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | A novel maximum torque per Ampere (MTPA) controller for induction motor (IM) drives is presented. It is shown to be highly suited to applications that do not demand an extremely fast dynamic response, for example electric vehicle drives. The proposed MTPA field oriented controller guarantees asymptotic torque (speed) tracking of smooth reference trajectories and maximises the torque per Ampere ratio when the developed torque is constant or slow varying. An output-feedback linearizing concept is employed for the design of torque and flux subsystems to compensate for the torque-dependent flux variations required to satisfy the MTPA condition. As a first step, a linear approximation of the IM magnetic system is considered. Then, based on a standard saturated IM model, the nonlinear static MTPA relationships for the rotor flux are derived as a function of the desired torque, and a modified torque-flux controller for the saturated machine is developed. The flux reference calculation method to achieve simultaneously an asymptotic field orientation, torque-flux decoupling and MTPA optimization in steady state is proposed. The method guarantees singularity-free operation and can be used as means to improve stator current transients. Experimental tests prove the accuracy of the control over a full torque range and show successful compensation of the magnetizing inductance variations caused by saturation. The proposed MTPA control algorithm also demonstrates a decoupling of the torque (speed) and flux dynamics to ensure asymptotic torque tracking. In addition, a higher torque per Ampere ratio is achieved together with an improved efficiency of electromechanical energy conversion. |
| first_indexed | 2025-11-14T19:35:24Z |
| format | Article |
| id | nottingham-38586 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:35:24Z |
| publishDate | 2017 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-385862020-05-04T18:28:00Z https://eprints.nottingham.ac.uk/38586/ Maximum torque-per-Amp control for traction IM drives: theory and experimental results Bozhko, Serhiy Dymko, Serhii Kovbasa, Serhii Peresada, Sergei A novel maximum torque per Ampere (MTPA) controller for induction motor (IM) drives is presented. It is shown to be highly suited to applications that do not demand an extremely fast dynamic response, for example electric vehicle drives. The proposed MTPA field oriented controller guarantees asymptotic torque (speed) tracking of smooth reference trajectories and maximises the torque per Ampere ratio when the developed torque is constant or slow varying. An output-feedback linearizing concept is employed for the design of torque and flux subsystems to compensate for the torque-dependent flux variations required to satisfy the MTPA condition. As a first step, a linear approximation of the IM magnetic system is considered. Then, based on a standard saturated IM model, the nonlinear static MTPA relationships for the rotor flux are derived as a function of the desired torque, and a modified torque-flux controller for the saturated machine is developed. The flux reference calculation method to achieve simultaneously an asymptotic field orientation, torque-flux decoupling and MTPA optimization in steady state is proposed. The method guarantees singularity-free operation and can be used as means to improve stator current transients. Experimental tests prove the accuracy of the control over a full torque range and show successful compensation of the magnetizing inductance variations caused by saturation. The proposed MTPA control algorithm also demonstrates a decoupling of the torque (speed) and flux dynamics to ensure asymptotic torque tracking. In addition, a higher torque per Ampere ratio is achieved together with an improved efficiency of electromechanical energy conversion. IEEE 2017-02-01 Article PeerReviewed Bozhko, Serhiy, Dymko, Serhii, Kovbasa, Serhii and Peresada, Sergei (2017) Maximum torque-per-Amp control for traction IM drives: theory and experimental results. IEEE Transactions on Industry Applications, 53 (1). pp. 181-193. ISSN 0093-9994 induction motor torque control tracking saturation http://ieeexplore.ieee.org/document/7565484/ doi:10.1109/TIA.2016.2608789 doi:10.1109/TIA.2016.2608789 |
| spellingShingle | induction motor torque control tracking saturation Bozhko, Serhiy Dymko, Serhii Kovbasa, Serhii Peresada, Sergei Maximum torque-per-Amp control for traction IM drives: theory and experimental results |
| title | Maximum torque-per-Amp control for traction IM drives: theory and experimental results |
| title_full | Maximum torque-per-Amp control for traction IM drives: theory and experimental results |
| title_fullStr | Maximum torque-per-Amp control for traction IM drives: theory and experimental results |
| title_full_unstemmed | Maximum torque-per-Amp control for traction IM drives: theory and experimental results |
| title_short | Maximum torque-per-Amp control for traction IM drives: theory and experimental results |
| title_sort | maximum torque-per-amp control for traction im drives: theory and experimental results |
| topic | induction motor torque control tracking saturation |
| url | https://eprints.nottingham.ac.uk/38586/ https://eprints.nottingham.ac.uk/38586/ https://eprints.nottingham.ac.uk/38586/ |