No abstract

SOC (State Of Charge) was one of the most important parameters for EVs (Electric Vehicles). It was the basis for EVs to prevent over-charging and over-discharging. Many researchers had been done to improve SOC estimation accuracy. In this paper, definition of SOC was discussed and the traditional SOC estimating algorithms and some improved SOC estimation algorithms were reviewed. The principles of these methods were also been introduced. By comparing their advantages and disadvantages of these methods, proposed a new idea of SOC estimation. This method would make SOC estimating accurate and simple.

No abstract

A simplified simulation method was described for charactering mismatching photovoltaic performance integrated with bypass and string diodes, which are configured additionally compared with the tradition design for avoiding deterioration to modules in series or in parallel connection. The Newton‐Raphson method was adopted for numerical simulations, with some computation problem discussed for fast convergence. It was proven to be suitable and effective when model validation coinciding with manufacturer specification. Furthermore, maximal power point (MPP) peak positions were reviewed roundly via simulations of the total characteristic curves. Multi‐power peaks with multi‐diodes installed were also investigated. The proposed method can be benefit for better comprehension on the physical circuit and provides greater program expansibility, and such simulation researches should be applicable for manufacturer to evaluate the configuration of photovoltaic module. © 2009 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

No abstract