This paper presents a method for module level State-Of-Charge (SOC) balancing and fault tolerant operation of the Cascaded H-bridge (CHB) converter based battery energy storage system for electric vehicle (EV) application. The proposed methods are based on the multi-dimensional PWM (MDPWM) strategy. It is shown that the proposed methods are conveniently integrated with the PWM generation algori...

This paper describes advances in models and methods used to estimate hybrid-electric-vehicle (HEV) battery-pack state-of-charge (SOC) using extended Kalman filtering (EKF). The electrochemical cells in the battery pack are Lithium Ion Polymer based, have a nominal capacity of about 7.5 Ah, and are optimized for power-needy applications. The discharge curve of these cells is very flat, which is ...

We will show how an electrochemical lithium-ion battery model is approximated with electrodeaveraged solid diffusion dynamics and parameterized through a reasonable set of experimental data. The parameterized model renders the critical solid-electrolyte surface charge as observable and allows the application of an extended Kalman filter for state of charge (SOC) estimation from the measured vol...

In the micro-grid, power storage converter is played as a interface between the battery pack and grid electricity storage device, to achieve a two-way exchange of energy. In this paper, the research and development of power storage converter can realize multiple sets of independent control of the battery, flexible configuration of the system capacity and flexible cutting of the battery pack. St...

Lithium-ion battery is one of the most versatile energy storage technologies today, and reliability safety lithium have always been target pursued by industry all time, so it particularly important to accurately monitor status battery. Actually, ultimate cause problems lies in thermal runaway inside In order overcome current temperature measurement systems, such as low accuracy insufficient sta...

A serious issue relative to the construction of electronic devices is proper power source selection. This problem particular importance when we are dealing with portable operating in varying environmental conditions, such as military equipment. correct selection source. In these types devices, lithium-ion batteries commonly used nowadays, and their variety—lithium iron phosphate battery—LiFePO4...

Lithium-ion batteries have been used as energy storage technologies for electric vehicles or power plants due to their high density, low self-discharge rate, and long lifespan. Since the temperature of are directly related with durability, distributing uniformly efficiently is critically important. In this study, a technology using forced convection air was implemented remove heat battery cells...