Small signal modeling and networked control of a PHEV charging facility

The introduction of communication systems to power system controllers have brought in another layer of complexity in their design and operation. In this paper a Plug-in Hybrid Electric Vehicle (PHEV) charging facility is studied. A linearized model of the facility is built including both the dc/dc and dc/ac converters of the Distributed Energy Resources (DER). In addition, a control strategy that includes both local and networked loops is proposed to monitor and control the dc bus voltage of a Local Energy Storage (LES) unit. This dc bus voltage is crucial to the self-sustaining capabilities of the system. Impacts of different communication factors to the system stability are analyzed. Lastly, the small signal model, control strategy, and stability analysis are verified with real time simulations.

[1]  Slobodan Cuk,et al.  A general unified approach to modelling switching-converter power stages , 1977 .

[2]  Srdjan Lukic,et al.  Evaluation of ZigBee communication platform for controlling the charging of PHEVs at a municipal parking deck , 2009, 2009 IEEE Vehicle Power and Propulsion Conference.

[3]  Tony Markel,et al.  Communication and control of electric drive vehicles supporting renewables , 2009, 2009 IEEE Vehicle Power and Propulsion Conference.

[4]  Chun-Taek Rim,et al.  Transformers as equivalent circuits for switches: general proofs and D-Q transformation-based analyses , 1990 .

[5]  T.C. Green,et al.  Modeling, Analysis and Testing of Autonomous Operation of an Inverter-Based Microgrid , 2007, IEEE Transactions on Power Electronics.

[6]  Wei Zhang,et al.  Stability of networked control systems: explicit analysis of delay , 2000, Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334).

[7]  John M. Uudrill.  Dynamic Stability Calculations for an Arbitrary Number of Interconnected Synchronous Machines , 1968 .

[8]  Tongwen Chen,et al.  Wide-Area Control of Power Systems Through Delayed Network Communication , 2012, IEEE Transactions on Control Systems Technology.

[9]  S.K. Mazumder,et al.  Wireless PWM control of a parallel DC-DC buck converter , 2005, IEEE Transactions on Power Electronics.

[10]  F. Katiraei,et al.  Small-signal dynamic model of a micro-grid including conventional and electronically interfaced distributed resources , 2007 .

[11]  Willett Kempton,et al.  Using fleets of electric-drive vehicles for grid support , 2007 .