A fast charging of Li‐ion battery based on Lyapunov function for electrical vehicle

Abstract

This paper focuses on design of a control system for full bridge DC‐DC converter based on Lyapunov stability theorem which guarantees system stability. To achieve this goal, a full bridge DC‐DC converter is used as a Li‐ion battery charger and sinusoidal ripple current (SRC) is implemented as the charging algorithm. In initial step, state space equation of the system including DC‐DC converter and battery are obtained. After that, switching function is extracted by applying Lyapunov stability theorem to state space equation. Also in order to achieve unity power factor and allowable current Total Harmonic Distortion (THD) range based on standards, an Active Front End (AFE) PWM Rectifier is used. To evaluate the effectiveness of the proposed controller scheme, a laboratory prototype is implemented. Experimental result shows appropriate performance of proposed controller in tracking of reference values in comparison with fixed PI controller. In addition, results of AFE rectifier performance is evaluated by showing the unity power factor and low THD value.

Predictive load‐feedforward control for DC‐link voltage suppression and dynamic improvement of battery charging and discharging converter

“…Suppose the duty cycle of the switching tube Q 2 in Figure 2 is d(t), and similarly according to Equation (10), then it can be stated that…”

“…With the leapfrog development of renewable energy and new energy vehicle, accumulator batteries have rapidly been widening their range of applications, such as energy storage systems [1][2][3], uninterruptible power supply (UPS) [4], microgrid systems [5][6][7], and new energy vehicle (EV) systems [8][9][10]. The smooth operation of electric vehicles relies on power batteries to provide stable and long-lasting energy.…”

Power Electronics-Based Safety Enhancement Technologies for Lithium-Ion Batteries: An Overview From Battery Management Perspective

“…Power electronic converters are widely used for battery charging [259], [260]. Nowadays, various charging strategies have been designed for batteries [261], [262], such as constant current-constant voltage (CC-CV) charging [263], pulse-current (PC) charging [264], sinusoidal ripple current (SRC) charging [265], etc. Generally, the lifetime of a battery is affected by the charging strategy.…”