Active Filters for Standard-Compliant Power Quality in Electrical Networks


  • S.I. Gusev LLC NPP LM Invertor, Moscow, Russia
  • G.M. Mustafa LLC NPP LM Invertor, Moscow, Russia



modular multilevel voltage source converter, fast harmonic filtering, balancing adjustment, DSB control algorithm


The article is devoted to the analysis of three circuits of modular multilevel converters (MMCS) with cascade connection of single-phase bridge and half-bridge voltage converters, each of which operates in pulse width modulation (PWM) mode. The main feature of active filters based on MMS is the possibility of selective high-speed harmonic filtering in on–line mode: AF allows the suppression of any given set of harmonics, including the negative harmonic of the fundamental frequency (reverse sequence), with a given degree of suppression - to zero or a normalized value - by an appropriate task in the control program. For the practical implementation of MMS in solving problems of normalization of electricity quality indicators, the so-called DSB control algorithm of MMS was developed, based on the traditional "classical" theory of automatic control and the theory of three-phase circuits. A comparative assessment of the use of various MMC schemes for symmetry and reactive power compensation has been carried out. It is shown that the problem of voltage symmetry using MMS is a special one, requiring the use of special algorithms to solve it, ensuring the reactive nature of branches of MMS circuits.


Quality regulation of electric power in general-purpose electric power supply systems, State Standard (GOST) 32144–2013. Moscow, Russia: Standardinform, 2014, 16 p. (In Russian)

H. Akagi, E. H. Watanabe, M. Aredes, Instantaneous Power Theory and Applications to Power Conditioning. Piscataway. NJ: IEEE Press, 2007, 379 p.

H. Akagi, “Classification, Terminology, and Application of the Modular Multilevel Cascade Converter (MMCC),” IEEE Transactions on Power Electronics, vol. 26, no. 11, pp. 3119–3130, 2011.

E. Kontos, G. T. Tsolaridis, R. Teodorescu, P. Bauer, “High Order Voltage and Current Harmonic Mitigation Using the Modular Multilevel Converter STATCOM,” IEEE Access, vol. 5, pp. 16684–16692, 2017.

D. Braeckle, S. Mersche, M. Schnarrenberger, P. Himmelmann, M. Hiller, “Modular Multilevel Converters as active filters to mitigate low frequency current harmonics in converter fed grid applications,” in PCIM Europe 2018, 5–7 June 2018, Nuremberg, Germany, pp. 218–225.

I. L. Arkhipov, Yu. A. Goryushin, S. I. Gusev, G. M. Mustafa, Yu. M. Sennov, R. G. Shamonov, “Capacity rating of the active filtering and balance-adjusting device to achieve standard-compliant voltage on the busbars of 220 kv Skovorodino substation,” Elektricheskiestancii, no. 3, pp. 46–53, 2016. (In Russian)

G. M. Mustafa, S. I. Gusev, “Active series- and shunt-connected filtering and compensation devices,” Energetik, no. 8, pp. 3–10, 2019. (In Russian)

V. S. Chuprikov, “The use of fast-acting phase-regulated semiconductor reactive power compensation devices for standard-compliant power quality parameters in the UNPG,” Energy Expert, no. 4, pp. 40–46, 2020. (In Russian)

V. V. Aksenov, A. I. Demin, V. S. Chuprikov, “Ensuring power quality in power systems adjacent to the Trans-Siberian Railway and the Baikal-Amur Mainline. Hands-on experience gained in development and implementation of compensation devices,” Energetik, no. 3, pp. 14–22, 2023. (In Russian)

G. M. Mustafa, S. I. Gusev, “Filtering of higher harmonics in electrical networks under dynamically changing conditions,” Energiya Edinoy Seti, no. 4 (33), pp. 44–52, 2017. (In Russian)

G. M. Mustafa, S. I. Gusev, Active filtering and balance adjustment devices for the power sector, 2nd ed., revised and expanded. Мoscow, Russia: MPEI Publishing House, 2022, 198 p. (In Russian)

Transmission of electric power by high voltage direct current. Active power filters. Requirements and guidelines for application, GOST R 59031-2020. Moscow, Russia: Standardinform, 2020. (In Russian)

R. Marquardt, “Current rectification circuit for voltage source inverters with separate energy stores replaces phase blocks with energy storing capacitors,” Publication number DE10103031, 2002-07-25.

R. Marquardt, A. Lesnicar, “New Concept for High Voltage – Modular Multilevel Converter,” In Proceedings of the 2004 IEEE 35th Annual Power Electronics Specialists Conference PESC’04, Aachen, Germany, Jun. 20–25 2004.

G. Tsolaridis, H. A. Pereira, A. F. Cupertino, R. Teodorescu, M. Bongiorno, “Losses and cost comparison of DS-HB and SD-FB MMC based large utility grade STATCOM,” in 2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC), Florence, Italy, 2016, pp. 1-6

G. M. Mustafa, “Technique for approximate analysis of pulse-modulated inverters with sine-wave output voltage.” Russian Electrical Engineering, no. 10, pp. 2–8, 1987. (In Russian)

G. M. Mustafa, “Filtering and compensation device for high-voltage DC power transmission,” Patent 2521428C2. Russian Federation, MPK H02J 3/18/. Applied for on 05.07.2012, published on 27.06.2014. 35 p. (In Russian)

High Power Semiconductors for Industrial Applications. semiconductors.