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1887

access icon free Single-stage ZETA-SEPIC-based multifunctional integrated converter for plug-in electric vehicles

© The Institution of Engineering and Technology
Received 26/06/2017, Accepted 10/10/2017, Revised 21/09/2017, Published 11/10/2017

A single-stage-based integrated power electronic converter has been proposed for plug-in electric vehicles (PEVs). The proposed converter achieves all modes of vehicle operation, i.e. plug-in charging, propulsion and regenerative braking modes with wide voltage conversion ratio (M) [M < 1 as well as M > 1] in each mode. Therefore, a wide variation of battery voltage can be charged from the universal input voltage (90–260 V) and allowing more flexible control for capturing regenerative braking energy and dc-link voltage. The proposed converter has least components compared to those existing converters which have stepping up and stepping down capability in all modes. Moreover, a single switch operates in pulse width modulation in each mode of converter operation hence control system design becomes simpler and easy to implement. To correctly select the power stage switches, a loss analysis of the proposed converter has been investigated in ac/dc and dc/dc stages. Both simulation and experimental results are presented to validate the operation of the converter.

Inspec keywords: control system synthesis; electric vehicle charging; electric propulsion; regenerative braking; DC-DC power convertors; battery powered vehicles; AC-DC power convertors; pulse width modulation

Other keywords: single-stage-based integrated power electronic converter; DC-DC stages; AC-DC stages; pulse width modulation; propulsion modes; regenerative braking modes; stepping up capability; control system design; single-stage ZETA-SEPIC-based multifunctional integrated converter; vehicle operation modes; plug-in electric vehicles; stepping down capability; loss analysis; plug-in charging

Subjects: AC-DC power convertors (rectifiers); Control system analysis and synthesis methods; Transportation; Transportation system control

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