Autonomous single-phase inverter with high quality of output voltage
DOI:
https://doi.org/10.14529/power180110Keywords:
autonomous voltage inverter, amplitude-pulse modulation, voltage quality, harmonic coefficientAbstract
The solution of the relevant problem of improving the quality of the output signal of autonomous voltage inverters is presented. In contrast to the pulse width modulation (PWM) traditionally used for this purpose, a topology containing a single-phase bridge inverter and a direct-current source switch at the input is proposed, which makes it possible to form an eight-step voltage with a total harmonic coefficient of 6.9% on the load, which meets the requirements of modern standard on the quality of electricity. The novelty of the technical solution is confirmed by the utility model patent. The optimization of the curve of the multistage signal approximating the sinusoid, using the minimum harmonic coefficient criterion, was carried out with the help of evolutionary modeling (genetic algorithm). The study of electromagnetic processes was carried out by the method of simulation.
The received results confirmed the invariance of the harmonic coefficient of the inverter output voltage throughout the range of the load power factor variation 0 ≤ cos φ ≤ 1 and the stability of the system with instantaneous increase and decrease of the load. The importance of the proposed and investigated circuit solution is determined by the advantages of step modulation in comparison with the pulse-width modulation:
– low dynamic losses in key elements, allowing the inverter to be used in a wide frequency range;
– independence of the harmonic coefficient on the frequency and nature of the load;
– reduction of mass-dimensional parameters, due to the lack of the need to install a filter at the output
of the inverter, because the guaranteed quality of electricity meets the requirements of the standard;
– in comparison with the method of pulse-width modulation, absence of a negative influence on the characteristics of consumers and the terms of their operation, if no higher-harmonic filters are used.
The scope of the above inverter circuit includes radioelectronic equipment, communication equipment, electric drives. The greatest advantages of the proposed circuit solution are manifested when the inverter is connected to the local power supply system with renewable energy sources (solar panels, batteries), since in this case the installation of galvanically isolated rectifiers as the sources of direct current at the input of the AIN
is not necessary.
References
Rozanov Yu.K. Osnovy silovoy preobrazovatel'noy tekhniki [Basiсs of Power Conversion Technolo-gy]. Moscow, Energiya Publ., 1979. 385 p.
Zhezhelenko I.V. Vysshie garmoniki v sistemakh elektrosnabzheniya prompredpriyatiy [Higher Har-monics in Power Supply Systems for Industrial Enterprises]. Moscow, Energoatomizdat Publ., 1984. 160 p.
Zhezhelenko I.V. Pokazateli kachestva elektroenergii na promyshlennykh predpriyatiyakh [Power Supply Indicators in Industrial Enterprises]. Moscow, Energiya Publ., 1977. 127 p.
Murphy J. Thyristor control of A.C. motors. Oxford, Pergamon Publ, 1973. 202 p.
GOST 32144-2013 Elektricheskaya energiya. Sovmestimost' tekhnicheskikh sredstv elektromagnit-naya. Normy kachestva eklekticheskoy energii v sistemakh elektrosnabzheniya obshchego naznacheniya [GOST 32144-2013 lectric Energy. Electromagnetic Compatibility of Technical Means. Norms for the Quality of Eclectic Energy in General-purpose Power Supply Systems]. Moscow, Standartinform Publ., 2014. 16 p.
Glazenko T.A., Goncharenko R.B. Poluprovodnikovye preobrazovateli chastoty v elektroprivodakh [Se¬miconductor Frequency Converters in Electric Drives]. Leningrad, Energiya Publ., 1969. 184 p.
Karlov B., Esin E. [Modern Frequency Converters: Control Methods and Hardware Implementation].
Silovaya elektronika [Power Electronics], 2004, no. 1, pp. 50–54. (in Russ.)
Monmasson E. Power Electronic Converters: PWM Strategies and Current Control Techniques. Wiley-ISTE Publ, 2011. 608 p. DOI: 10.1002/9781118621196
Linear Circuit Design Handbook. Hank Zumbahlen (Ed.). News/Elsevier Publ., 2008 (Also published as Basic Linear Design, Analog Devices, 2007). DOI: 10.1016/B978-0-7506-8703-4.00008-0
Zakharov A. [Calculation of the Output Filter of the PWM Inverter for a Specified Voltage Harmon-ics on the Load]. Silovaya elektronika [Power Electronics], 2005, no. 1, pp. 46–49. (in Russ.)
Derakhshanfar M. Analysis of Different Topologies of Multilevel Inverters: Master of Science Thesis. Geteborg, Sweden, 2010. 39 p.
Franquelo L.G., Rodrigues О., Leon J., Kouro S., Portillo R. The Age of Multilevel Converters Ar-rives. IEEE Industrial Electronics Magasine, 2008, pp. 28–39. DOI: 10.1109/MIE.2008.923519
Stemmler H., Guggenbach P. Configurations of High-Power Voltage Source Inverter Drivers. Proc. EPE Conf., 1993.
Moin V.S. Stabilizirovannye tranzistornye preobrazovateli [Stabilized Transistor Transducers]. Moscow, Energoatomizdat Publ., 1986. 376 p.
Mycyk G.S. Osnovy teorii strukturno-algoritmicheskogo sinteza istochnikov vtorichnogo elektropi-taniya [Fundamentals of the Theory of Structural-Algorithmic Synthesis of Secondary Power Sources]. Mos-cow, MJeI Publ., 1989. 108 p.
Anisimova T.V., Danilina A.N., Kryuchkov V.V. [Methods for Improving the Quality of the Output Voltage of Inverters with Stepped Output Voltage]. Vestnik MAI [Messenger of MAI], 2010, vol. 17, no. 1, pp. 103–112. (in Russ.)
Koldaev R.V., Golembiovskiy Yu.M. [Optimization of the Harmonic Composition of the Output Voltage of Static Frequency Converters]. Tehnichna elektrodinamika [The Technical Electrodynamics.], 2000, vol. 8,
pp. 51–54. (in Russ.)
Tonkal' V.E. Sintez avtonomnykh invertorov modulyatsionnogo tipa [Synthesis of Autonomous In-verters of Modulation Type]. Kiev, Naukova Dumka Publ., 1979. 207 p.
Sen'ko V.I., Rudenko V.S., Skobchenko V.M., Smirnov V.S. [On the Optimal Synthesis of Ampli-tude-modulated Voltage]. Optimizatsiya poluprovodnikovykh ustroystv energeticheskoy elektroniki [Optimiza-tion of Semiconductor Devices of Power Electronics]. Kiev, Naukova dumka Publ, 1980, pp. 20–30. (in Russ.)
Rutkovskaya D., Pilin'skiy M., Rutkovskiy L. Neyronnye seti, geneticheskie algoritmy i nechetkie sistemy [Neural Networks, Genetic Algorithms and Fuzzy Systems]. Moscow, Goryachaya liniya – Telekom Publ., 2004. 452 p.
Clement R.P., Wren A. Genetic Algorithms and Bus-Driver Scheduling. 6th International Confer-ence for Computer-Aided Transport Scheduling, Lisbon, Portugal, 1993, vol. 9.
Thompson A. Temperature in Natural and Artificial Systems. Fourth International Conference on Artificial Life, 1997, pp. 388–397.
Shherbakov A.A., Golembiovsky Yu.M Odnofaznyj invertor so stupenchatym vyhodnym napr-jazheniem [Single-Phase Inverter with Stepped Output Voltage]. Patent RF, no. 130159, 2007.
