Abstract：The article describes the module structure and operation characters of Power Conditioning Unit(PCU) for aerospace product. The sequential switching shunt regulator(S3R) part of PCU is detailed and the impact of its operation to the bus voltage is analyzed. When S3R conditions the bus voltage, the ripple whose frequency is unfixed appears so that battery charge regulator(BCR) which uses bus as its input can conduct this bus voltage disturbance to its output. So the voltage and charging current of battery contain this disturbance. This paper deduces a general expression of feedforward controller which can null audio susceptibility of DC-DC converter. According to the variation of battery voltage along with the charge process, an adaptive feedforward controller which can change its gain automatically is presented so that it can null audio susceptibility and optimize the charging current of battery.
贾鹏宇, 郑琼林, 李艳, 王蓓蓓. 级联系统中Buck充电调节器前馈控制方法[J]. 电工技术学报, 2014, 29(10): 134-140.
Jia Pengyu, Trillion Q Zheng, Li Yan, Wang Beibei. Research on Feedforward Control of Buck Circuit as Battery Charge Regulator in Cascade System. Transactions of China Electrotechnical Society, 2014, 29(10): 134-140.
[1] Patel M R. Spacecraft power systems[M]. United States: CRC Press Inc, 2005. [2] Capel A, O'Sullivan D, Marpinard J C. High-power conditioning for space applications[C]. Proceedings of the IEEE, 1988, 76(4): 391-408. [3] Craig C S, Weinberg A H, Hall K W. The design and performance of a power system for the GALILEO system test bed (GSTB-V2/A)[C]. Proceedings of Seventh European Space Power Conference (7th ESPC), 2005: SP-589. [4] Maset E, Ferrers A. 5kW weinberg converter for battery discharging in high-power communications satellites[C]. Proceedings of IEEE Power Electronics Specialist Conference, 2005: 69-75. [5] Castiaux J P, Bury P, Liegeois B. A new generation of power conditioning modules for high power telecom- munication spacecrafts[C]. Proceedings of Fourth European Space Power Conference, 1995: 61-68. [6] Picart G, Michoud V. Behavioural modeling of the spacbus 3000 power conditioning unit[C]. Proceedings of Fourth European Space Power Conference(4th ESPC), 1995: 89-94. [7] O’Sullivan D, Weinberg A H. The sequential switching shunt regulator(S3R)[C]. ESTEC Spacecraft Power Conditioning Seminar, 1977: 123-131. [8] Garrigos A, Blanes J M, Carrasco J A, et al. Hybrid photovoltaic-hydrogen power conditioning system[C]. Proceedings of Ninth European Space Power Conference, 2011: SP-690. [9] Delepaut C. S3R stability margins and design guidelines[C]. Proceedings of Eighth European Space Power Conference (8th ESPC), 2008: SP-661. [10] Maset E, Sanchis K E, Weinberg A H, et al. ION drive propulsion mpp power conditioning system without battery[C]. Proceedings of Eighth European Space Power Conference (8th ESPC), 2008. [11] Kelkar S S, Lee F C. Adaptive input filter compensa- tion for switching regulators[J]. IEEE Transactions on Aerospace and Electronic Systems, 1984, 20(1): 57-66. [12] Otto D V. Reduction of switching regulator audiosu- sceptibility to zero[J]. Electronics Letters, 1986, 22(8): 441-442. [13] Calderoni L, Pinola L, Varoli V. Optimal feed- forward compensation for PWM DC/DC converters[C]. Power Electronics Specialists Conference, 1990. [14] Arbetter B, Maksimovic D. Feedforward pulse width modulators for switching power converters[J]. IEEE Transactions on Power Electronics, 1997, 12(2): 361-368. [15] Luciano C, Paolo D P, Alberto L. maimum power point tracker controller for unregulated bus architecture[C]. Proceedings of Seventh European Space Power Conference, 2005. [16] Peter A, Craig C. Non-sequential power bus for LEO applications[C]. Proceedings of Seventh European Space Power Conference, 2005. [17] Middlebrook R D. Input filter considerations in design and application of switching regulators[C]. Proceedings of IEEE Industry Applications Society Annual Meeting, 1976: 366-382.
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