Abstract

This paper reveals energy shaping passivity-based control methodology for a three-level (TL) Ćuk PFC converter. The proposed control methodology is based on the dynamic model of the system along with the idea of energy shaping and damping injection. First, a dynamic model of the TL Ćuk PFC converter is developed using the port-controlled Hamiltonian formulation and the state-space averaging technique. Then, the PCH control technique is implemented in the system and the stability analysis is carried out. In order to eliminate the steady state error, a PI controller is integrated with the PCH-PBC control scheme. Further, the performances of aforesaid system are investigated for battery charging application with the help of MATLAB/Simulink. To validate the simulation study, a prototype model of TL Ćuk PFC converter with proposed controller is built using OP-5142 real-time simulator and test results are recorded. Furthermore, the power quality features of TL Ćuk PFC converter are assessed through monitoring of input current THD under different operating conditions. To assess the system performance in terms of efficiency, input p.f., input current THD, and controller parameters, the proposed controller is compared with benchmark PI controller under dynamic variations at the input voltage and the load.

摘要

本文揭示了基于能量整形无源性的三电平 (TL) Ćuk PFC 转换器的控制方法。所提出的控制方法基于系统的动态模型以及能量整形和阻尼注入的思想。首先，使用端口控制的哈密顿公式和状态空间平均技术开发了 TL Ćuk PFC 转换器的动态模型。然后，在系统中实施PCH控制技术并进行稳定性分析。为了消除稳态误差，PI 控制器与 PCH-PBC 控制方案集成在一起。此外，在 MATLAB/Simulink 的帮助下，研究了上述系统在电池充电应用中的性能。为了验证模拟研究，使用 OP-5142 实时仿真器构建了带有建议控制器的 TL Ćuk PFC 转换器的原型模型，并记录了测试结果。此外，TL Ćuk PFC 转换器的电能质量特性是通过监控不同工作条件下的输入电流 THD 来评估的。为了在效率、输入 pf、输入电流 THD 和控制器参数方面评估系统性能，在输入电压和负载的动态变化下，将所提出的控制器与基准 PI 控制器进行比较。