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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Janis Zakis
Riga Technical University
Control & Systems Engineering Electrical & Electronics Engineering

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Bidirectional single-loop current sensorless control applied to NPC multi-level converter considering conduction losses Alexander Suzdalenko; Janis Zakis; Pavels Suskis; Leonids Ribickis
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 11, No 4: December 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1013.457 KB) | DOI: 10.11591/ijpeds.v11.i4.pp1945-1957

Abstract

The current feedback is considered as unavoidable part of most control system driving power electronic converters. However, it is possible to eliminate the use of current sensor, if properly calculated volt-second balance is applied to input inductor. This paper describes the implementation of current sensorless control technique applied to neutral point clamped multi-level converter, where only voltage control-loop is used to stabilize internal capacitors voltage, while inductor’s current is shaped by means of current sensorless control block in both discontinuous and continuous current modes. The capacitor voltage balancing is implemented by means of delta-controller that selects alternative capacitor in respect to main switching scheme. Finally, the analytical study of proposed solution is verified with simulation results.
An Overview of Bidirectional AC-DC Grid Connected Converter Topologies for Low Voltage Battery Integration Kaspars Kroics; Oleksandr Husev; Kostiantyn Tytelmaier; Janis Zakis; Oleksandr Veligorskyi
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 9, No 3: September 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1014.853 KB) | DOI: 10.11591/ijpeds.v9.i3.pp1223-1239

Abstract

Battery energy storage systems are becoming more and more popular solution in the household applications, especially, in combination with renewable energy sources. The bidirectional AC-DC power electronic converter have great impact to the overall efficiency, size, mass and reliability of the storage system. This paper reviews the literature that deals with high efficiency converter technologies for connecting low voltage battery energy storage to an AC distribution grid. Due to low voltage of the battery isolated bidirectional AC-DC converter or a dedicated topology of the non isolated converter is required. Review on single stage, two stage power converters and integrated solutions are done in the paper.
Co-Authors Alexander Suzdalenko Kaspars Kroics Kostiantyn Tytelmaier Leonids Ribickis Oleksandr Husev Oleksandr Veligorskyi Pavels Suskis