DocumentCode :
648273
Title :
DQ current control of a bidirectional, isolated, single-stage AC-DC converter for vehicle-to-grid applications
Author :
Weise, Nathan
Author_Institution :
Dept. Electr. Eng., Univ. of Maine, Orono, NE, USA
fYear :
2013
fDate :
21-25 July 2013
Firstpage :
1
Lastpage :
5
Abstract :
Electric vehicles can provide a viable network of distributed energy storage and provide ancillary services to the grid, (Vehicle-to-Grid, V2G), but Electric Vehicle chargers need to be bidirectional in order to provide power back to the grid. In this paper, dq current control is proposed using a novel bidirectional, isolated, single stage AC-DC converter. Unity open loop power factor has been achieved in previous work using the novel topology but relies on a non-distorted voltage waveform to achieve unity power factor and lacks control of reactive power. The single phase input filter equations are transformed into the rotating dq reference frame by generating an imaginary beta axis. The filter dynamics are analyzed and controllers are designed for dq input currents. A phase shift component is added to the modulation scheme allowing control of the phase and magnitude of the converters input current. The topology and control scheme is simulated in PLECS. Simulation results are presented for various operating points and validate the theoretical analysis. The proposed control strategy implements real and reactive power control which is essential for V2G applications and the topology has the advantages of high switching frequency, isolation, voltage matching, high power density, and reduced size compared to the conventional cascaded isolated AC-DC topologies.
Keywords :
AC-DC power convertors; control system synthesis; electric vehicles; phase control; reactive power control; smart power grids; DQ current control; PLECS; V2G application; ancillary services; bidirectional AC-DC converter; cascaded isolated AC-DC topology; controller design; distributed energy storage; electric vehicle chargers; filter dynamics; imaginary beta axis; isolated AC-DC converter; magnitude control; modulation scheme; nondistorted voltage waveform; phase control; phase shift component; power density; reactive power control; rotating DQ reference frame; single-phase-input filter equation; single-stage AC-DC converter; switching frequency; theoretical analysis; unity open loop power factor; vehicle-to-grid application; voltage matching; Conferences; Matrix converters; Phase modulation; Reactive power; Topology; Vehicles; Voltage control; AC-DC power converters; Electric Vehicles; Matrix converters; Power Conversion; Smart Grid;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power and Energy Society General Meeting (PES), 2013 IEEE
Conference_Location :
Vancouver, BC
ISSN :
1944-9925
Type :
conf
DOI :
10.1109/PESMG.2013.6672847
Filename :
6672847
Link To Document :
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