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- Title
Reactive-Power Compensators Based on Semiconductor AC Voltage Regulators.
- Authors
Zhuravlev, I. I.; Panfilov, D. I.; Astashev, M. G.; Roghkov, A. N.; Krasnoperov, R. N.; Gorchakov, A. V.
- Abstract
An approach to controlling the current of reactive-power compensators by regulating the voltage on their reactive element has been presented. An alternating voltage regulator based on a transformer with a partitioned secondary winding and a semiconductor switch has been proposed. It has been shown that such a construction of a voltage regulator is equivalent to a transformer with an adjustable transformation coefficient. The problem of obtaining the maximum number of discrete levels of transformation coefficients for a fixed number of sections of the secondary winding of the transformer has been considered. A circuit of a semiconductor switchboard has been presented, which provides voltage regulation on the reactive element of the compensator relative to the mains voltage in the direction of decreasing or increasing. A circuit of a switchboard based on bidirectional thyristor switches has been proposed. The analysis of electromagnetic processes in the reactive-power compensator has been carried out. The main calculation ratios determining currents, voltages, and installed capacities of the elements of the compensator power circuit depending on the transformer transformation coefficient have been given. It has been shown that, with this approach to the construction of a reactive-power compensator, its equivalent replacement circuit relative to the input terminals is represented by an adjustable reactive element. The main advantages of reactive-power compensators constructed on the basis of semiconductor ac voltage regulators have been considered. The results of simulation modeling of reactive-power compensators in the MATLAB/Simulink environment have been presented, confirming the main calculated ratios and the noted advantages.
- Publication
Russian Electrical Engineering, 2022, Vol 93, Issue 6, p381
- ISSN
1068-3712
- Publication type
Article
- DOI
10.3103/S1068371222060128