Abstract
To extend the operation speed range for surface-mounted permanent magnet synchronous generator (SPMSG), a novel field-weakening control method is proposed in this paper. Dual current regulator with voltage feedback loop and single current regulator with variable q-axis voltage (SCR-VQV) is included in the control method. The control system can automatically and smoothly switch between these two control modes by using the control method described above. In addition, the dynamic performance during sudden load changes and stability of SPMSG are improved.
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