Line-modulation-based flux-weakening control for permanent-magnet synchronous machines
Line-modulation-based flux-weakening control for permanent-magnet synchronous machines
复制标题
基于线调制的永磁同步电机弱磁控制
DOI:
10.1049/iet-pel.2017.0443
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发表时间:
2018-01
影响因子:
2
通讯作者:
Cheng Ming
中科院分区:
文献类型:
--
作者:
Wang Wei;Zhang Jinghao;Cheng Ming
A line-modulation-based flux-weakening control is proposed for surface-mounted permanent-magnet synchronous machines. To evaluate the average dc bus voltage utilisation, the maximum line-modulation-ratio, which cannot be >1, is defined. If the maximum line-modulation-ratio is equal to 1, the voltage capacity of voltage-source-inverter is fully utilised, which means the dc bus voltage utilisation has been maximised. Without special declarations, the overmodulation scheme is not utilised in this study. The line modulation is employed in the proposed flux-weakening control, in which the average dc bus voltage utilisation can be maximised by regulating the maximum line-modulation-ratio to 1. Compared with the conventional flux-weakening control, the proposed one is simpler and its copper loss can be reduced. The reason is that the proposed flux-weakening control employs the line modulation while the conventional flux-weakening control usually adopts the space vector pulse width modulation. The effectiveness of the proposed flux-weakening control is verified by experimental results.
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