DQ-Frame Modeling of an Active Power Filter Integrated With a Grid-Connected, Multifunctional Electric Vehicle Charging Station

作者：Crosier Russell^*; Wang Shuo

来源：IEEE Transactions on Power Electronics, 2013, 28(12): 5702-5716.

DOI：10.1109/TPEL.2013.2245515

• Active power filter
• direct-quadrature (DQ)-frame
• electric vehicle (EV) charging
• power system stability
• triangle-hold equivalent

The paper first proves the existence of a nonlinear, feedback loop due to the effect of an active power filter (APF) on the grid voltage for a multifunctional electric vehicle charging station. A linear, open-loop model is derived based on direct quadrature (DQ)-theory in discrete time (DT). Based on this model, a linear, closed-loop model is further developed with DQ-theory in DT. A triangle-hold equivalent instead of a zero-order-hold equivalent is employed in the model for better representation. The developed linear, closed-loop model is finally generalized to general power systems. Simulations are carried out to verify the developed models under transient conditions. The short-time (1-2 ms), transient stability of the grid with an APF is determined with the developed model. In contrast to existing stability analyses in the phasor domain, using DQ-theory can linearize the loop and simplify the loop model in DT domain.

• 出版日期2013-12