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 inverters 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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