Research article

Duplex PD inertial damping control paradigm for active power decoupling of grid-tied virtual synchronous generator


  • Received: 06 June 2022 Revised: 01 August 2022 Accepted: 08 August 2022 Published: 18 August 2022
  • The growth of distributed generation significantly reduces the synchronous generators' overall rotational inertia, causing large frequency deviation and leading to an unstable grid. Adding virtual rotational inertia using virtual synchronous generators (VSG) is a promising technique to stabilize grid frequency. Due to coupled nature of frequency and active output power in a grid-tied virtual synchronous generator (GTVSG), the simultaneous design of transient response and steady state error becomes challenging. This paper presents a duplex PD inertial damping control (DPDIDC) technique to provide active power control decoupling in GTVSG. The power verses frequency characteristics of GTVSG is analyzed emphasizing the inconsistencies between the steady-state error and transient characteristics of active output power. The two PD controllers are placed in series with the generator's inertia forward channel and feedback channel. Finally, the performance superiority of the developed control scheme is validated using a simulation based study.

    Citation: Sue Wang, Jing Li, Saleem Riaz, Haider Zaman, Pengfei Hao, Yiwen Luo, Alsharef Mohammad, Ahmad Aziz Al-Ahmadi, NasimUllah. Duplex PD inertial damping control paradigm for active power decoupling of grid-tied virtual synchronous generator[J]. Mathematical Biosciences and Engineering, 2022, 19(12): 12031-12057. doi: 10.3934/mbe.2022560

    Related Papers:

  • The growth of distributed generation significantly reduces the synchronous generators' overall rotational inertia, causing large frequency deviation and leading to an unstable grid. Adding virtual rotational inertia using virtual synchronous generators (VSG) is a promising technique to stabilize grid frequency. Due to coupled nature of frequency and active output power in a grid-tied virtual synchronous generator (GTVSG), the simultaneous design of transient response and steady state error becomes challenging. This paper presents a duplex PD inertial damping control (DPDIDC) technique to provide active power control decoupling in GTVSG. The power verses frequency characteristics of GTVSG is analyzed emphasizing the inconsistencies between the steady-state error and transient characteristics of active output power. The two PD controllers are placed in series with the generator's inertia forward channel and feedback channel. Finally, the performance superiority of the developed control scheme is validated using a simulation based study.



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