Two-stage isolated bidirectional on-board charger and control technology Online publication date: Thu, 23-Jun-2022
by Kai Zhou; Shaolong Zheng; Ningzhi Jin; Dongyang Sun
International Journal of Electric and Hybrid Vehicles (IJEHV), Vol. 13, No. 3/4, 2021
Abstract: A two-stage isolated bidirectional on-board charger that can realise bidirectional energy flow is proposed in this paper. The on-board power battery can both obtain energy from the grid and discharge it to external devices. The bidirectional on-board charger is composed of a front-stage bidirectional totem pole PFC converter and a rear-stage CLLC resonant converter. The equivalent model is established using the fundamental analysis method. Its voltage gain characteristics and resistive boundary are then analysed to ensure that the on-board charger can realise soft switching in the full load range. The front converter adopts double closed-loop control, and the rear converter adopts pulse frequency control so that constant current output or constant voltage output modes occur to charge the power battery. Simulation software is then used to build a 3.3 kW system model, and the simulation results verify the correctness of the theoretical analysis and structural design.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Electric and Hybrid Vehicles (IJEHV):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook