Abstract
Although the deployment of alternating current (AC) -busbar plug-in electric vehicle (PEV) charging station with photovoltaic (PV) is a promising alternative, the interaction among subsystems always causes the instability problem. Meanwhile, the conventional generalized Nyquist criterion (GNC) is complex, and it is not suitable for the design of the AC system. Therefore, this paper proposes a modified infinity-one-norm (MION) stability criterion based on the impedance method to assess the stability of the foresaid charging station. Firstly, the typical structure and operation modes of the charging station are studied. Furthermore, each subsystem impedance matrix is built by small-signal method, and the MION stability criterion based on impedance method is proposed to assess the charging station stability. Compared with the previous simplified stability criteria based on the norm, the proposed criterion has lower conservatism. Furthermore, the design regulation for the controller parameters is provided, and the stability recovery way is provided by connecting the doubly-fed line and energy storage equipment, which are selected based on intermediate variable, i.e., short-circuit ratio (SCR). Finally, the effectiveness and conservatism of the proposed stability criterion are validated through simulation and experimental results.
Highlights
RECENTLY, the increasing pressure from energy and en‐ vironment protection has made the research for ad‐ vanced energy infrastructures urgent
To accurately assess the stability of alternating current (AC)-busbar plug-in electric vehicle (PEV) charg‐ ing station with PV, this paper proposes an modified infinityone-norm (MION) stability criterion based on the impedance method
1) This paper proposes an MION stability criterion based on impedance method to assess the stability of AC-busbar PEV charging station with PV in electromagnetic timescale
Summary
RECENTLY, the increasing pressure from energy and en‐ vironment protection has made the research for ad‐ vanced energy infrastructures urgent. This paper focuses on the im‐ pedance-norm-based stability assessment of the AC-busbar PEV charging station with PV in electromagnetic timescale. To accurately assess the stability of AC-busbar PEV charg‐ ing station with PV, this paper proposes an MION stability criterion based on the impedance method. 1) This paper proposes an MION stability criterion based on impedance method to assess the stability of AC-busbar PEV charging station with PV in electromagnetic timescale. The MI‐ NO stability criterion based on impedance method is pro‐ posed to assess the stability of the AC-busbar PEV charging station with PV in electromagnetic timescale.
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