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This paper presents a single-phase virtual synchronous machine (VSM) and its possible application for providing vehicle-to-grid (V2G) services from domestic battery chargers of electric vehicles (EVs). In a VSM, the power converter is controlled to emulate the inertia and damping effect of a synchronous machine. Thus, a VSM-based EV charger can contribute to the spinning reserve and the frequency...
Accurate eigenvalue analysis of High Voltage Direct Current (HVDC) transmission systems depends on state-space models that are accounting for the frequency-dependent characteristics of the dc cables. A classical simplified model with cascaded pi-sections can be enhanced to capture the frequency dependency of cable parameters by adding parallel RL branches for representing the longitudinal impedances...
Conditioning of network impedance by insertion of a virtual inductance as an inherent feature of the converter control system has the potential to extend the range of stable operation of the overall system. This paper presents a scenario in which such potential is explored and its range of application is identified. It shows first that implementation of a virtual inductance is naturally suited for...
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