Title :
A novel bipolar bi-directional buck-boost converter
Author :
Zhang, Li ; Yang, Shuang-jing ; Xing, Yan
Author_Institution :
Aero-Power Sic-tech Center, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing
Abstract :
A novel bi-directional buck-boost converter used for battery charging and discharging cooperated with a three-level half bridge inverter in a UPS is proposed. The operation of charging and discharging can be controlled respectively, and the capacitor voltage balance can be achieved based on the peak current control. The operating principle and parameter design of the converter are analyzed in detail. Capacitor voltage balance affected by inductors coupling coefficient is also researched. Experimental results are presented to verify the proposed analysis.
Keywords :
invertors; power capacitors; power convertors; uninterruptible power supplies; UPS; battery charging; battery discharging; bipolar bidirectional buck-boost converter; capacitor voltage balance; peak current control; three-level half bridge inverter; Batteries; Bidirectional control; Bridge circuits; Capacitors; Equations; Inductors; Inverters; Magnetic flux; Uninterruptible power systems; Voltage control;
Conference_Titel :
Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3826-6
Electronic_ISBN :
978-7-5062-9221-4
