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标题：表面式永磁同步电机直接转矩控制系统自适应变角度电压矢量选择策略 |
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作者：李耀华,师浩浩,任佳越,等 |
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| 2019年第6期 访问次数：282次 |
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摘要：基于表面式永磁同步电机直接转矩控制系统电压矢量选择区域及电压矢量角度对转矩变化的影响，分析了不同角度电压矢量作用下的表面式永磁同步电机直接转矩控制电压矢量选择系统控制性能。基于不同角度电压矢量的控制效果，给出了一种自适应变角度电压矢量选择策略。仿真结果表明：本文给出的自适应变角度电压矢量选择策略在处于动态时选择对转矩变化作用较强的电压矢量，提高了系统动态性能；在处于稳态时选择对转矩变化作用较弱的电压矢量，减小了转矩脉动。仿真结果验证了本文给出的控制策略有效性。
Abstract: Based on effects of voltage vectors with different angle on torque in surface permanent magnet synchronous motor (PMSM) direct torque control (DTC) system, control performance of different voltage vector angle selection strategies were studied. And an adaptive voltage vector selection strategy with variable angle was proposed. Compared with fixed angle selection strategy, which will select voltage vectors which have strong effects of torque to improve system dynamics in dynamic state and select voltage vectors which have weak effects of torque to decrease torque ripple in the steady state. Effectiveness of the proposed strategy was verified through simulation results.
Key words: permanent magnet synchronous motor; direct torque control; voltage vector selection; adaptive control |
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