Analysis of the converter synchronizing method for the contribution of battery energy storage systems to inertia emulation Articles uri icon

publication date

  • March 2020

start page

  • 1478(1)

end page

  • 1478(2)


  • 6


  • 13

International Standard Serial Number (ISSN)

  • 1996-1073


  • This paper presents a comprehensive analysis of the effect of the converter synchronizing methods on the contribution that Battery Energy
    Storage Systems (BESSs) can provide for the support of the inertial response of
    a power system. Solutions based on phase-locked loop (PLL) synchronization and
    virtual synchronous machine (VSM) synchronization without PLL are described and
    then compared by using time-domain simulations for an isolated microgrid (MG)
    case study. The simulation results showed that inertial response can be
    provided both with and without the use of a PLL. However, the behavior in the
    first moments of the inertia response differed. For the PLL-based solutions,
    the transient response was dominated by the low-level current controllers,
    which imposed fast under-damped oscillations, while the VSM systems presented a
    slower response resulting in a higher amount of energy exchanged and therefore
    a greater contribution to the support of the system inertial response.
    Moreover, it was demonstrated that PLL-based solutions with and without
    derivative components presented similar behavior, which significantly
    simplified the implementation of the PLL-based inertia emulation solutions.
    Finally, results showed that the contribution of the BESS using VSM solutions
    was limited by the effect of the VSM-emulated inertia parameters on the system
    stability, which reduced the emulated inertia margin compared to the PLL-based