论文标题
使用PID/PIDN算法对模拟和数字控制回路的表征
Characterization of analog and digital control loops for bidirectional buck-boost converter using PID/PIDN algorithms
论文作者
论文摘要
本文使用PID和PIDN控制算法来表征模拟和数字控制回路的表征，用于双向降压和Boost Converter（BBC）。 BBC的控制回路是在MATLAB代码中使用单位步长响应和带有Bode图和极点零图的频域中的传输功能在MATLAB代码中设计和实现的。这些传递函数是通过BBC的平均大信号模型获得的。为了确保BBC的稳定性和动态响应，这是可再生能源应用中的瓶颈。使用Bode图，极点零图和步骤响应证明了BBC使用PIDN控制算法的动态响应和稳定性的改善。证明了由于功率阶段和控制器的传递功能而导致的控制回路增益，并且在模拟和数字控制环中发现它稳定。提议PIDN补偿器在稳定性和瞬态行为之间保持健康的平衡，因为两者都是间接成比例的。 BBC是使用平均大型信号建模技术建模的，使用MATLAB工具模拟，并通过单位步骤输入，Bode图和极点零图进行了动态和稳定响应的分析。硬件是使用TMS320F28335控制器设计和实现的。
This article presents the characterization of analog and digital control loops using PID and PIDN control algorithms for bidirectional buck and boost converter (BBC). Control loops of BBC are designed and implemented in MATLAB code using transfer functions in time domain with unit step response and in frequency domain with bode plots and pole-zero plots. These transfer functions are obtained by average large signal modeling of BBC. Actions of analog and digital control loops are characterized in order to ensure stability and dynamic response of BBC which is a bottleneck in renewable energy applications. Improvement in dynamic response and stability of BBC with PIDN control algorithm is demonstrated using bode plots, pole-zero plots, and step response. Control loop gain due to transfer functions of power stage and controllers is demonstrated, and it is found stable in both analog and digital control loops. PIDN compensator is proposed to maintain a healthy balance between the stability and transient behavior since both are indirectly proportional. BBC is modeled using average large signal modeling technique, simulated using MATLAB tool, and analysis of dynamic and stability response is done through unit step input, bode plot, and pole-zero plot. Hardware is designed and implemented using TMS320F28335 controller.
