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Stability analysis of constant frequency current controlled PWM ultra lift Luo converter

机译:恒流电流控制PWM超举罗变换器的稳定性分析

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Luo Converters which use voltage lift technique to provide high gain is a topic of research interest. They are used in motor drives, telecom, automotive applications and as radar and electronic warfare in military. In this work, mixed signal behaviour of constant frequency controlled PWM Ultra Lift Luo Converter is analyzed. The closed loop transfer function is derived using Perturbation theory, Sample-Hold theory and Modified Pade Approximation method. To get the margin of stability accurately, Slope Compensation is used. The expressions of the control current of the inner current loop of Converter with and without slope compensation are derived. Finally the controller is designed using PSIM 9.0 and SMARTCTRL 1.0 software and stability is analysed.
机译:使用升压技术提供高增益的Luo转换器是一个研究热点。它们用于电机驱动器,电信,汽车应用以及军事中的雷达和电子战。在这项工作中,分析了恒定频率控制的PWM Ultra Lift Luo转换器的混合信号行为。闭环传递函数是使用扰动理论,采样保持理论和改进的Pade逼近方法得出的。为了准确地获得稳定裕度,使用了斜率补偿。推导了带斜率补偿和不带斜率补偿的变流器内部电流环控制电流的表达式。最后,使用PSIM 9.0和SMARTCTRL 1.0软件设计了控制器,并分析了稳定性。

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