Abstract
In order to realize decoupling control of d-and q-axis terms in current control loops of permanent magnet synchronous motor (PMSM) drives, a polynomial decoupling structure based on current errors was proposed to compensate coupling terms. To obtain one-order delay current loop, the compensation was deduced from stator voltage equations on the basis of traditional feedback current controllers. Then the integral compensation was expended to a polynomial expression by Taylor method at zero point, to reduce saturation of voltage. Compared with the traditional feedback current control, the proposed method can reach more precious control of d-and q-axis currents, especially during the process of acceleration. Simulation and experimental results verify the feasibility of this method.
Original language | English |
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Pages (from-to) | 50-54+62 |
Journal | Dianji yu Kongzhi Xuebao/Electric Machines and Control |
Volume | 15 |
Issue number | 10 |
State | Published - Oct 2011 |
Keywords
- Current loop
- Decoupling control
- Error compensation
- Permanent magnet synchronous motors
- Polynomial structure