An Indirect PI-MPC Hybrid Method-Based Bi-quasi-Modified Switched Z Source Inverters for Vehicle to Grid applications

A comparative analysis on the performance of bi-quasi-modified switched Z source (Bi-qMSZSI) topology having a bidirectional attribute with the different control algorithm for the vehicle to grid interfacing utilizing proportional integral (PI) controller and Finite-set model predictive control (MPC) control was discussed in the study. The proposed work utilizes cascaded PI controllers and advanced MPC algorithm on a relatively new Bi-qMSZSI impedance source network topology. A total of four PI controllers or more may require to control the power exchange using the cascaded PI control technique. The tuning requirement for the cascaded PI controllers increases the overall control complexity, whereas the finite-set MPC algorithm generates switching pulses on the AC side in conjunction with a single PI controller on the DC side, reducing the burden. Adoption of finite-set MPC algorithm for discretized instantaneous model minimizes the current ripples prominent in cascaded PI control. Switched Z source inverter has a high boost factor with lesser passive elements compared to other impedance source network topologies. Bi-qMSZSI has an added advantage of constant DC link voltage with a finite set MPC Algorithm; it produces better results than cascaded PI controllers.

Cite this article as: A. Tiwari and A. Chowdhury, “An indirect PI-MPC hybrid method-based bi-quasi-modified switched Z source inverters for vehicle to grid applications,” Electrica., 23(1), 20-27, 2023.