| 摘要: |
| 双级式矩阵变换器是高阶的、多模态的、非线性的动态系统，提出应用2级开关状态函数建立其精确的数学模型。为了将模型中整流级和逆变级相乘的开关函数矩阵进行解耦，提出将整流级的输出电压波动看作逆变级闭环系统的环内扰动，将系统的建模简化成逆变级的建模分析。应用开关周期平均算子、坐标旋转变换、小信号扰动法，建立了系统逆变级的小信号动态数学模型，推导出从调制器输入到变换器输出的传递函数。应用PSIM软件验证了数学模型的合理性。 |
| 关键词: 双级式矩阵变换器 建模 PSIM 变换器 电路拓扑 仿真 |
| DOI： |
| 分类号: |
| 基金项目:陕西省教育厅科研计划资助项目（09JK374，2010JK468 ） |
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| Modeling of two-stage matrix converter |
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DONG Fengbin, ZHONG Yanru
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College of Automation and Information Engineering，Xi’an University of Technology，
Xi’an 710048，China
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| Abstract: |
| A definite mathematical model is built with two-stage switching state function for the two-stage matrix converter，a kind of high-order，multi-modal and non-linear dynamic system . It is proposed to consider the output voltage fluctuation of rectifier-stage as the internal disturbance of inverter-stage closed-loop to decouple model’s switching function matrix，which is the multiplication of rectifier-stage and inverter-stage. The system modeling is thus simplified into the modeling of inverter-stage. The cycle switch average operator，coordinates rotating transition and small signal perturbation method are applied to build the small signal dynamic mathematical model of inverter-stage，based on which the input-to-output transfer functions of modulator are deduced. Its rationality is verified by PSIM. |
| Key words: two-stage matrix converter model buildings PSIM electric converters electric network topology computer simulation |
