| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5004402 | ISA Transactions | 2015 | 7 Pages |
â¢A synchronous rotating coordinate transformation matrix is proposed, and the fundamental and harmonic components in d-q subspace is changed into DC component.â¢The PI current controller is employed in d-q subspace, and the parameters is designed by using internal model principle, and the current PI controller parallel with resonant controller is designed in x-y subspace to remove 5, 7 harmonic component of stator current.â¢A modified six-phase SVPWM method is proposed for six-phase inverter without DC bus.
To reduce the undesired 5th and 7th stator harmonic current in the six-phase permanent magnet synchronous motor (PMSM), an improved vector control algorithm was proposed based on vector space decomposition (VSD) transformation method, which can control the fundamental and harmonic subspace separately. To improve the traditional VSD technology, a novel synchronous rotating coordinate transformation matrix was presented in this paper, and only using the traditional PI controller in d-q subspace can meet the non-static difference adjustment, the controller parameter design method is given by employing internal model principle. Moreover, the current PI controller parallel with resonant controller is employed in x-y subspace to realize the specific 5th and 7th harmonic component compensation. In addition, a new six-phase SVPWM algorithm based on VSD transformation theory is also proposed. Simulation and experimental results verify the effectiveness of current decoupling vector controller.
