Optimisation of fractional‐order PI controller for bidirectional quasi‐Z‐source inverter used for electric traction system

A comprehensive review on isolated and non-isolated converter configuration and fast charging technology: For battery and plug in hybrid electric vehicle

“…A bidirectional inverter with a quasi-Z source is intended for use in a battery storage system, and various controllers are used to optimize the battery current stress. Time domain and frequency domain controllers are used to regulate power [ 81 ].…”

Refine control methodology and implementation of capacitor voltage control for improved switched inductor Z‐source inverter

“…Among all previous techniques, the capacitor voltage technique is chosen with the PID controller because the P-I controller suffers from high starting overshoot, and it has a sensitivity to gains in addition, it has a poor response for dynamic response. 19,20 Most research papers use PID with the optimizer to get optimum parameters for PID, 21 However, in this paper, the PID controller is designed in S-domain using small signal analysis, and the parameters have been obtained based on specific steps which will be mentioned later. In addition, the resulting controller is directly transformed in C code to be implemented on the digital controller (DSP) without any optimization method.…”

“…This also results in an ideal output voltage that can be connected to the electrical grid or other sensitive loads. Among all previous techniques, the capacitor voltage technique is chosen with the PID controller because the P‐I controller suffers from high starting overshoot, and it has a sensitivity to gains in addition, it has a poor response for dynamic response 19,20 . Most research papers use PID with the optimizer to get optimum parameters for PID, 21 However, in this paper, the PID controller is designed in S‐domain using small signal analysis, and the parameters have been obtained based on specific steps which will be mentioned later.…”

Dual-Source Bidirectional Quasi-Z-Source Inverter Development for Off-Road Electric Vehicles

“…Compared to the traditional PI controller, the FOPI controller provides greater flexibility in improving system performance due to the presence of fractional integrator gain. This additional tuning parameter gives the FOPI controllers more features, such as robustness regarding plant uncertainties, flexibility regarding the system stability, highfrequency noise rejection, and reduced sensitivity to load disturbances [30]. Thus, the main contributions of the paper are as follows:…”