Six-Phase Space Vector PWM under Stator One-Phase Open-Circuit Fault Condition
| العنوان: | Six-Phase Space Vector PWM under Stator One-Phase Open-Circuit Fault Condition |
|---|---|
| المؤلفون: | Fei Rong, Mingcheng Lye, Zheng Jian, Shoudao Huang |
| المصدر: | Energies, Vol 11, Iss 7, p 1796 (2018) Energies Volume 11 Issue 7 |
| بيانات النشر: | MDPI AG, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Control and Optimization, Stator, Astrophysics::High Energy Astrophysical Phenomena, 020209 energy, Phase (waves), Energy Engineering and Power Technology, 02 engineering and technology, Topology, lcsh:Technology, open-circuit fault, law.invention, space vector pulse width modulation (SVPWM), auxiliary vector, law, 0202 electrical engineering, electronic engineering, information engineering, Astrophysics::Solar and Stellar Astrophysics, Torque, six-phase induction machine, Orthogonal matrix, Electrical and Electronic Engineering, phase-deficient operation, Engineering (miscellaneous), Physics, lcsh:T, Renewable Energy, Sustainability and the Environment, Plane (geometry), 020208 electrical & electronic engineering, Null vector, Phase space, Pulse-width modulation, Energy (miscellaneous) |
| الوصف: | The torque pulsation and speed pulsation of a six-phase induction machine with double Y-connected windings displaced by 30° increase after one phase of the stator winding is open-circuited. To reduce the pulsations, a method of six-phase space vector pulse width modulation (PWM) with fault-tolerance is proposed. The star point of the open-circuit winding group is connected to the centre point of the converter DC voltage. The 32 column matrices, which represent 32 stator winding voltages, are mapped to the d-q and z1-z2 planes using a new five-dimensional orthogonal matrix then, 32 basic vectors are obtained. By using an optimal model, six auxiliary vectors and an equivalent null vector are constructed, the magnitudes of which are all zero in the z1-z2 plane. By using the auxiliary vectors and equivalent null vector, the reference vector is synthesized, the zero magnitude of which in the z1-z2 plane can suppress the harmonic voltages, and the circular trajectory of which in the d-q plane can make the torque smooth. The simulation and experimental results show that the torque pulsation range and speed pulsation range of the proposed method with fault-tolerance are 30% and 25% of those of the classical method without fault-tolerance, respectively. Thus, the phase-deficient operation performance of the system is improved. |
| وصف الملف: | application/pdf |
| تدمد: | 1996-1073 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1776923c9f421dac17fea9f6780edf18Test https://doi.org/10.3390/en11071796Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....1776923c9f421dac17fea9f6780edf18 |
| قاعدة البيانات: | OpenAIRE |
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To reduce the pulsations, a method of six-phase space vector pulse width modulation (PWM) with fault-tolerance is proposed. The star point of the open-circuit winding group is connected to the centre point of the converter DC voltage. The 32 column matrices, which represent 32 stator winding voltages, are mapped to the d-q and z1-z2 planes using a new five-dimensional orthogonal matrix<br />then, 32 basic vectors are obtained. By using an optimal model, six auxiliary vectors and an equivalent null vector are constructed, the magnitudes of which are all zero in the z1-z2 plane. By using the auxiliary vectors and equivalent null vector, the reference vector is synthesized, the zero magnitude of which in the z1-z2 plane can suppress the harmonic voltages, and the circular trajectory of which in the d-q plane can make the torque smooth. 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