Scientific and Technical Journal

ELECTROTECHNIC AND COMPUTER SYSTEMS

ISSN Print 2221-3937
ISSN Online 2221-3805
FREQUENCY CONVERTER ELECTROMAGNETIC COMPATIBILITY WITH NETWORK
Abstract:

Weconsiderasingle-phaseACvoltageinverterinathree-phasesystemofcurrentscontrolledfrequencyandamplitudewithasimplifiedmaincircuitandcontrolsystem.Рассматривается преобразователь однофазного переменного напряжения в трехфазную систему токов регулируемой частоты и амплитуды с упрощенной силовой частью и системой управления.

Intheknownfrequencyconvertersproblemofelectromagneticcompatibility(EMC) issolvedbycompensatingharmonicsgeneratedinthenetworkthroughthepoweractivefilters.Another way to solve the EMC problem is proposed in this article: using tracker system with forced formation circuit consumed currents close to sinusoidal shape in the absence of a phase shift between voltage and current (the problem of EMC is solved) and relay control (the problem of speed, accuracy, low sensitivity of the perturbation to the action is solved). Suchasolutioncandramaticallysimplifybothpowersectionandcontrolsystem.

The article gives expression to calculate the frequency of the relay mode, the capacitors and the inductor input reactor. Shows oscillograms of the formation of the currents in the load and current consumption of the network.

Authors:
Keywords
DOI
10.15276/etks.15.91.2014.78
References

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