Nonlinear output feedback control of V2G single‐phase on‐board BEV charger

Abstract

In this work, we consider the problem of controlling a single‐phase on‐board battery electric vehicle (BEV) charger with vehicle‐to‐grid (V2G) technology. The BEV charger consists of a bidirectional ac‐dc power converter connected to the single‐phase power grid, followed by a bidirectional dc‐dc power converter interfacing an EV battery pack. The main control objectives are fourfold: (i) Unitary Power Factor (UPF) in grid‐side; (ii) tight dc‐bus voltage regulation; (iii) safety battery charge and battery discharge during the grid‐to‐vehicle (G2V) mode and V2G mode, respectively; and (iv) asymptotic stability of the closed loop system. After an accurate system modelling, a nonlinear controller is designed using a backstepping design technique. The point is that the battery inner voltage is not accessible to measurement. Therefore, a nonlinear observer is invoked in order to estimate all non‐measured variables making the solution cheaper and noiseless. It is shown using a formal analysis and numerical simulations, that the proposed output feedback controller (combining a nonlinear controller and a nonlinear observer) meets all control objectives.

Mobility‐aware optimal trade planning and mean field game‐based decentralized charging control for large‐scale electric vehicles

“…In the transportation area, compared to conventional internal combustion engine vehicles, pure electric vehicles (EVs) are gaining increasing attention due to their zero emission during driving [1]. Recently, the ratio of EVs in the worldwide newly produced vehicle market has become progressively higher, especially in countries with a carbon-neutral goal [2,3]. Due to their energy storage characteristics, EVs are viewed as a promising tool to improve the performance of the power grid [4].…”

Passivity‐based control for a DC/DC high‐gain transformerless boost converter

“…Additionally, Massaoudi et al [6] present a sliding mode controller designed for output voltage regulation of a traditional DC‐DC boost converter. Additionally, Rachid et al [9] present a battery charger controller based on backstepping technique with vehicle to grid (V2G) and grid to vehicle (G2V) capabilities. On the other hand, in Zũniga‐Ventura et al [10], an adaptive backstepping controller for a fuel‐cell/boost converter system is presented, where an immersion and invariance (I&I) adaptation law is used to cope model uncertainties.…”