Title :
Study of Bidirectional DC-DC Converter for Power Management in Electric Bus with Supercapacitors
Author :
Zhiguo, Kong ; Chunbo, Zhu ; Shiyan, Yang ; Shukang, Cheng
Author_Institution :
Harbin Inst. of Technol.
Abstract :
Electric bus with supercapacitors (SCs) as the only on-board power source could realize fast and effective recuperation of energy in frequent braking and deceleration in city. However, it´s a very challenging task to design a bi-directional DC-DC converter because of wide voltage range and high current order of SCs. This paper presents an analysis and comparative study of several non-isolated bi-directional DC-DC converters. As a compromise of power density, cost and reliability, buck/boost converter is adopted as the final choice. Furthermore, a soft-switching circuit with snubber is designed and realized to reduce EMI and losses in switching devices. Experimental results show its high continuous-running efficiency and reliability, which could satisfy the requirements of this power-management application
Keywords :
DC-DC power convertors; electromagnetic interference; interference suppression; snubbers; supercapacitors; switching convertors; EMI reduction; bidirectional DC-DC converter; buck-boost converter; continuous-running efficiency; electric bus; onboard power source; power density; power-management application; snubbers; soft-switching circuit; supercapacitors; Bidirectional control; Circuits; Cities and towns; Costs; DC-DC power converters; Electromagnetic interference; Energy management; Snubbers; Supercapacitors; Voltage; Bidirectional; Converters; Electric bus; Supercapacitors;
Conference_Titel :
Vehicle Power and Propulsion Conference, 2006. VPPC '06. IEEE
Conference_Location :
Windsor
Print_ISBN :
1-4244-0158-5
Electronic_ISBN :
1-4244-0159-3
DOI :
10.1109/VPPC.2006.364376
