DOI: https://doi.org/10.15407/publishing2020.57.042

METHODS OF INCREASING EFFICIENCY AND IMPROVING THE MAIN PARAMETERS OF DC/DC CONVERTERS WITH A LONGITUDINAL SWITCH

I. V. Volkov*, V. V. Golubev**, V. I. Zozulev***
Institute of Electrodynamics of the National Academy of Sciences of Ukraine, pr. Peremohy, 56, Kyiv, 03057, Ukraine,
e-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
* ORCID ID : http://orcid.org/0000-0002-0696-0382
** ORCID ID : http://orcid.org/0000-0002-6447-8199
*** ORCID ID : http://orcid.org/0000-0003-1361-3968

The results of the study of three new variants of DC/DC-pulse converters (DCC) with a longitudinal transistor switch are presented. It is established that the creation of conditions in which there is no sharp break of the DCC input current, leads to a smooth change in voltage on its switch and to minimize the range of variation of this voltage, which is accompanied by reduced power losses on the switch and improved power quality at the DCС input and output. It is shown that the creation of such conditions is implemented using two-winding chokes and an input buffer node. Exact and approximate analytical expressions are presented that describe the processes in such converters, which are in good agreement with the results of computer simulation. The most acceptable ways to control the switches of DCC-1...DCC-3 were found out. Recommendations for the use of DCC -1... DCC-3 are given. References 11, figures 1, table 1.
Key words: DC/DC-Converter; longitudinal switch; two-winding choke; buffer node; power quality.

1. Ugrinov P. Limiting the voltage on the key transistor. Power electronics. 2004. No. 1. Pp. 62-65. (Rus)
2. Glebov B. A., Novakevich V. Construction of devices for forming the switching path when locking power transistors. Tekhnichna Electrodynamika, 1985. No. 2. Pp. 59-63. (Rus)
3. Petrosyan N. N., Shitov V. A. Thyristor key with damping capacitor for power supply of electrotechnological installations. Tekhnichna Electrodynamika. 1985. No. 2. Pp. 63-67. (Rus)
4. Bhaskaran R., Paresh C. Voltage Clamp Circuits for a Power MOSFET PWM Inverter. IEEE transaction. on industry appl. 1987. Vol. IA-23. No. 5. Pp. 911-920. DOI: https://doi.org/10.1109/TIA.1987.4505002
5. Rajashekara K. S., Vithyathil J., Rajagopalan V. Protection and switchingaid networks for transistor bridge inverters. Transact. on industrial electronics. 1986. Vol. IE–33, No 2. Pp. 185-192. DOI: https://doi.org/10.1109/TIE.1986.350215
6. Dunn Michael. Resonant Converter reduces the inductance of the Chuck. Radiolotsman, 2018. No 5. Pp. 48-49. (Rus)
7. Moiseev E. A. Construction of damping circuits for high-power pulsed pregenerators. Collection of scientific Tr. NSTU. 2006. No 1(43). Pp. 147-152. (Rus)
8. Rusu A. P. Why the throttle windings of a reverse Converter can have a different number of turns. Radiolotsman. 2018. No 1, Pp. 26-31. (Part 1). No 2. Pp. 26-29 (Part 2). (Rus)
9. Frenzel Lou. Charge pumps as an alternative to stabilizers of other types. Radiolotsman. 2017. No. 12. Pp.32-35. (Rus)
10. Chashko M. V. Gusanov A.A. Features of pulsed power transmission. KDPU. 2007. No 4 (45). Pp. 92-94.
11. Slobodan Cuk. A new zero-ripple switching DC-to-DC converter and integrated magnetics (a New DC/DC Converter with zero ripples and integrated magnetic cores). IEEE Power Electronics Specialists Conference, 1980. Record. Pp. 12-32.

Received 18.09.2020  

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