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| 摘要: |
| 通过对三相矩阵式AC-AC拓扑结构变换电路的分析,把AC-AC九开关式矩阵式变换器等效为虚拟“整流”和“逆变”2部分;分析了不对称规则采样法正弦脉冲宽度调制SPWM(Sine Pulse Width Modulation)波生成原理,并把不对称规则采样法SPWM调制应用于三相AC-AC矩阵式变换器。在理论上对这种变换电路推导出了各种条件下的开关组合、各开关组合的通断时序和通断时间计算公式。使用Matlab/Simulink对结论进行了仿真,证明了把不对称规则采样法SPWM调制应用于三相AC-AC矩阵式变换器是可行的,应用推导结论可根据需要在矩阵式变换器上生成相位、幅值、频率均可调的三相SPWM调制波。 |
| 关键词: 不对称规则采样法,SPWM,矩阵式变换器 |
| DOI： |
| 分类号:TM921 |
| 基金项目: |
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| Asymmetric regular sampling method SPWM control strategy for matrix converter |
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FAN Yan
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| Abstract: |
| Based on the topological analysis of three-phase matrix AC to AC conversion circuit,an AC to AC nine-switch matrix converter is equivalent to virtual rectification part and conversion part.The asymmetric regular sampling method SPWM(Sine Pulse Width Modulation) is studied and then applied in the three-phase matrix AC to AC converter.Switch combinations under different conditions as well as their on-off sequence and on-off time calculation are deduced in theory.Simulation with Matlab / Simulink verifies its feasibility.The deduced strategy can be used to generate three-phase SPWM for matrix converter with tunable phase,amplitude and frequency. |
| Key words: asymmetric regular sampling method,SPWM,matrix converter |
