Design and Implementation of a Regenerative Braking System for Light Electric Vehicles

• Main Authors: Wen-Chun Chi, 戚文駿
• Other Authors: Cheng-Hu Chen
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/61618010935063256048

碩士 === 國立宜蘭大學 === 機械與機電工程學系碩士班 === 98 === In order to increase the cruising distance, system efficiency and reliability, regenerative braking has been widely adopted in various electric vehicles and advanced hybrid electric vehicles. Because of the issues concered cost and limited volume, the two stage bidirectional DC/AC converter used in hybrid electric vehicles and electric cars are not suitable for light electric vehicles, such as electric bikes, electric scooters, etc. In this research, a single stage bidirectional DC/AC converter is designed and implemented with a general full-bridge inverter without any additional power switch or bulky passive components. According to the different driving conditions, three different switching strategies are developed. Named after the operating number of the power switches, they are called single switch, two switches and three swithes control strategy. The important performance indexes such as efficiency, maximum voltage vonversion ratio, braking torque, reliability, current stress, etc., are built and compared with each switching strategy. The theoretical analysis and experimental results have revealed that the cruising distance, braking torque, and reliability can be improved effectively within a variable braking control strategy according to the driving conditions. Since the additional power switches, passive components and costly position sensors are not required, the proposed method is particular suitable for various light electric vehicles.