The trade-off between DC link voltage dynamics and AC-side current quality in power factor correction (PFC) rectifiers is well-studied. It has been shown that applying notch filter in series with a typically employed PI regulator (i.e. forming a PI+Notch controller) permits DC link voltage dynamics refining without worsening total harmonic distortion (THD) of the grid-side current. This work indicates that dropping the integral term of the PI regulator part (i.e. forming a P+Notch controller) allows attaining further improvement of PFC rectifiers transient response to step-like load variations without sacrificing the grid-side current THD. On the other hand, it is demonstrated that the system possesses small tolerable average DC link voltage steady-state error (~1% under full load). Analytical expressions linking the coefficients of the proposed controller with the above-mentioned performance merits for given DC link capacitance value and mains frequency uncertainty range are revealed in the paper. Simulations results validate the proposed design methodology.
Aminov, Y., Yuhimenko, V., Di Benedetto, M., Lidozzi, A., Peretz, M.M., Kuperman, A. (2025). Simple Linear Dc Link Voltage Controller to Improve Transient Response of Pfc Rectifiers Under Stability and Current Quality Constraints. In 2025 IEEE PES Conference on Innovative Smart Grid Technologies - Middle East (ISGT Middle East) (pp.1-5). Institute of Electrical and Electronics Engineers Inc. [10.1109/isgtmiddleeast65737.2025.11314304].
Simple Linear Dc Link Voltage Controller to Improve Transient Response of Pfc Rectifiers Under Stability and Current Quality Constraints
di Benedetto, Marco;Lidozzi, Alessandro;
2025-01-01
Abstract
The trade-off between DC link voltage dynamics and AC-side current quality in power factor correction (PFC) rectifiers is well-studied. It has been shown that applying notch filter in series with a typically employed PI regulator (i.e. forming a PI+Notch controller) permits DC link voltage dynamics refining without worsening total harmonic distortion (THD) of the grid-side current. This work indicates that dropping the integral term of the PI regulator part (i.e. forming a P+Notch controller) allows attaining further improvement of PFC rectifiers transient response to step-like load variations without sacrificing the grid-side current THD. On the other hand, it is demonstrated that the system possesses small tolerable average DC link voltage steady-state error (~1% under full load). Analytical expressions linking the coefficients of the proposed controller with the above-mentioned performance merits for given DC link capacitance value and mains frequency uncertainty range are revealed in the paper. Simulations results validate the proposed design methodology.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
