Abstract
Dynamic losses and efficiency of a pulse semiconductor converter depend on the circuit of the converter used. The aim of the study is to show that when a pulse-frequency converter circuit is used, it is possible to reduce dynamic losses and increase the efficiency of the converter relative to the pulse-width converter circuit. To carry out the analysis and comparison of semiconductor circuits of pulse-width and pulse-frequency converters, the methods of simulation are used in the article. The principle of operation and the main differences between pulse-width and pulse-frequency converters are described. The schemes of pulse-width and pulse-frequency converters in the Matlab environment were developed and modeled using blocks from the Simulink/SimPowerSystem/Simscape library. A model block is simulated that calculates the static and dynamic power losses of the IGBT. To calculate power losses, namely static and dynamic losses, the method of approximating the loss graphs was used. The obtained mathematical dependences describe quite accurately the graphs of the power losses of the IGBT transistor. A power transistor of the MITSUBISHI company of the CM800HC-66H type was selected as an IGBT-transistor. It is shown that using a pulse-frequency converter circuit can reduce dynamic losses and increase the efficiency of the converter relative to the pulse-width converter circuit. After analyzing the obtained characteristics of pulse semiconductor converters, it was noted that when the duty ratio changed from 0.1 to 0.5, the efficiency of the pulse-frequency converter significantly exceeded the efficiency of the pulse-width converter. This increase was more pronounced at a higher switching frequency of a pulsed semiconductor converter and a higher power of the power switches of the converters.
Keywords
Pulse semiconductor converter, pulse-width modulation, pulse-frequency modulation, approximation, dynamic loss, efficiency, frequency.
1. Kruglikov O.V., Makarov L.N., Piskunov S.V. Development, production and application of energy efficient electrical machines and drives. Elektrotekhnika [Russian Electrical Engineering], 2015, no. 3, pp. 4-8. (In Russian)
2. Dunaev M.P., Dovudov S.U. Modeling a Pulse-Width Converter Circuit. Trudy Vserossiyskoy nauchno-prakticheskoy konferentsii "Povyshenie effektivnosti proizvodstva i ispol'zovaniya elektroenergii v usloviyakh Sibiri" [Proceedings of the All-Russian Scientific and Practical Conference "Increasing the Efficiency of Production and Use of Electricity in Siberia"]. Irkutsk, Irkutsk National Research Technical University Publ., 2019, vol. 1, pp. 3-6. (In Russian)
3. German-Galkin S.G. Shirotno-impulsnyye preobrazovateli [Pulse-width converters]. Leningrad, Energy Publ., 1979. 96 p. (In Russian)
4. Ivakhno V., Zamaruiev V.V., Ilina O. Estimation of semiconductor switching losses under hard switching using Matlab/Simulink subsystem. Electrical, Control and Communication Engineering. 2013. Vol. 2. Iss. 1. Рp. 20-26. doi: 10.2478/ecce-2013-0003.
5. Zhu Y., Xiao M., Su X., Yang G., Lu K., Wu Z. Modeling of conduction and switching losses for IGBT and FWD based on SVPWM in automobile electric drives. Applied Sciences. 2020. No. 10(13). 4539. doi: 10.3390/app10134539.
6. Plakhtii O.A., Nerubatskyi V.P., Hordiienko D.A., Khoruzhevskyi H.A. Calculation of static and dynamic losses in power IGBT transistors by polynomial approximation of basic energy characteristics. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2020. No.2. Pp. 82-88. doi: 10.33271/nvngu/2020-82.
7. Wei K., Zhang C., Gong X., Kang T. The IGBT losses analysis and calculation of inverter for two-seat electric aircraft application. Energy Procedia. 2017. Vol. 105. Pp. 2623-2628. doi: 10.1016/j.egypro.2017.03.756.
8. Dunayev M.P., Dovudov S.U. Simulation of a single-phase two-level autonomous voltage inverter with pulse frequency modulation. Informatsionnyye i matematicheskiye tekhnologii v nauke i upravlenii [Information and mathematical technologies in science and management], 2020, no. 2(18), pp. 134-143. (In Russian) doi: 10.38028/ESI.2020.18.2.011
9. Baodong B., Dezhi C. Inverter IGBT loss analysis and calculation. 2013 IEEE International Conference on Industrial Technology (ICIT), Cape Town, South Africa. 2013. Pp. 563-569. doi: 10.1109/ICIT.2013.6505733
10. Shahin A., Payman A., Martin J., Pierfederici S., Meibody-Tabar F. Approximate novel loss formulae estimation for optimization of power controller of DC/DC converter. IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society, Glendale, AZ, USA. 2010. Pp. 373-378. doi: 10.1109/IECON.2010.5674999.
11. Dunaev M.P. Rezonansnyye invertory dlya upravleniya elektroprivodami [Resonant inverters controlling electric drives]. Irkutsk, Irkutsk National Research Technical University Publ., 2004. 103 p. (In Russian)
12. Blinov A., Vinnikov D., Jalakas T. Loss calculation methods of half-bridge square-wave inverters. Elektronika Ir Elektrotechnika. 2011. No. 7(113). Pp. 9-14. doi: 10.5755/j01.eee.113.7.604.
13. Alemi P., Lee D. Power loss comparison in two- and three-level PWM converters. 8th International Conference on Power Electronics - ECCE Asia, Jeju, Korea (South). 2011. Pp. 1452-1457. doi: 10.1109/ICPE.2011.5944455.
14. Dovudov S.U., Dunayev M.P. Analysis of energy indicators of pulse converters. Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta [Proceedings of Irkutsk State Technical University], 2020, vol. 24, no 2, pp. 345-355. doi: 10.21285/1814-3520-2020-2-345-355 (In Russian)
15. Shirahama H., Muto T. A novel power loss calculation method for power converters by transforming switching-loss into impulse-waveforms. 2018 21st International Conference on Electrical Machines and Systems (ICEMS), Jeju, Korea (South). 2018. Pp. 2226-2229. doi: 10.23919/ICEMS.2018.8549134.
16. Dunayev M.P., Dovudov S.U. Simulation of the frequency-pulse converter circuit. Informatsionnyye i matematicheskiye tekhnologii v nauke i upravlenii [Information and mathematical technologies in science and management], 2019, no. 3 (15), pp. 144-152. doi: 10.25729/2413-0133-2019-3-13. (In Russian)
17. Zhemerov G.G., Ivakhno V.V., Kovalchuk O.I. Calculation of power losses and temperature of the structure of transistor-diode modules in computer modeling of converters. Elektrotekhnika i elektromekhanika [Electrical Engineering & Electromechanics], 2011, no. 4, pp. 21-28. (In Russian)
18. Bouzida A., Abdelli R., M'hamed O. Calculation of IGBT power losses and junction temperature in inverter drive. 2016 8th International Conference on Modelling, Identification and Control (ICMIC), Algiers, Algeria. 2016. Pp. 768-773. doi: 10.1109/ICMIC.2016.7804216.
19. Feix G., Dieckerhoff S., Allmeling J., Schonberger J. Simple methods to calculate IGBT and diode conduction and switching losses. 2009 13th European Conference on Power Electronics and Applications, Barcelona, Spain. 2009. Pp. 1-8.