摘  要：利用开关磁阻电机的简化线性模型，对开关磁阻电动机相绕组在不同转子位置时，分别施加正压、零压和反压的电流变化情况和能量流动方向进行了分析，理论分析出零压续流比反压续流的电流平滑性好。在低速电流斩波控制方式下进行了零压和反压续流实验，实验结果表明：零压续流比反压续流控制方式具有更平滑的电流波形和更小的电磁噪声。
关键词：开关磁阻电动机；反压续流；零压续流；电磁噪声；电流斩波

Abstract:  In this paper, The simplified linear model of switched reluctance motor was used. The change of current and the direction of energy flow in the phase windings of switched reluctance motor were analyzed when the phase winding was applied positive-votage, zero-votage and negative-votage under the condition of different rotor position. Theoretical analysis shows that the current waveform in the zero-votage freewheeling mode is smoother than that in the negative-votage freewheeling mode. The experiments of zero-votage freewheeling and negative-votage freewheeling were completed in current chopping control mode at low speed. The experimental results show that the current waveform is smoother and electromagnetic noise is smaller in the zero-votage freewheeling mode than that in the negative-votage freewheeling mode.
Key words:  switched reluctance motor；negative-voltage freewheeling；zero-voltage freewheeling；electromagnetic noise；current chopping control