Current distribution between frequency-controlled bridge resonant converters in a spacecraft power supply system
DOI: 10.21293/1818-0442-2025-28-4-169-176
Abstract: This paper examines a high-power spacecraft power supply sys-tem consisting of parallel-connected bridge inverters with series resonant circuits acting as an output voltage stabilizer. A method for controlling the bridge resonant inverters based on control frequency tuning is proposed, ensuring uniform current distribution between parallel-operating modules with different resonant circuit parameters. The authors constructed a simula-tion model of a bridge inverter, and proposed a method for de-termining the optimal operating frequencies of parallel invert-ers and the relationship coefficients between these frequencies, which ensure current sharing between modules with a specified error. Waveforms of the resonant circuit currents of the invert-ers are presented with independent frequency control and taking into account the derived relationship. The achieved parameters are confirmed by experiments and simulation.
Keywords: bridge inverter with a series resonant circuit, paral-lel operation of voltage converters, resonant frequency, current distribution, simulation model, resonant circuit impedance
For citation:
Savochkin N. A., Apasov V. I., Mihalchenko S. G., Zhelezovskiy D. E. Current distribution between frequency-controlled bridge resonant converters in a spacecraft power supply system. Doklady Tomskogo gosudarstvennogo universiteta sistem upravleniya i radioelektroniki, 2025, vol. 28, no. 4, pp. 169–176. DOI: 10.21293/1818-0442-2025-28-4-169-176
Authors and copyright holders:
- Savochkin N. A. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
- Apasov V. I. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
- Mihalchenko S. G. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
- Zhelezovskiy D. E. , JSC PO Murommashzavod
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