Abstract：The large signal behavior of power electronics converter is important for system operation, such as startup and load transient. With the wide application of DC distributed power system, the system level optimization and stability analysis is still not well addressed due to the lack of effective large-signal model. This paper presents a new large-signal modeling method for DC-DC converter using the principle of energy conservation. A reduced-order large-signal model of a Buck converter is derived using gyrator based on energy conservation. This linearized model can also simulate the large-signal load transition under different conditions (such as CCM and DCM), which is suitable for system level modeling and large signal stability analysis for cascaded system. The simulation and experimental results are also presented to show the model can accurately reflect the characteristics of ports of the power module, which verifies the effectiveness of the modeling method.
张阳, 张军明, 杜韦静. 基于回转器的Buck变换器大信号建模[J]. 电工技术学报, 2011, 26(1增): 49-55.
Zhang Yang, Zhang Junming, Du Weijing. Large-Signal Model by Means of Gyrators for Buck Converters. Transactions of China Electrotechnical Society, 2011, 26(1增): 49-55.
[1] Middlerook R D. Input filter considerations in design and application of switching regulators[C]. Proceedings of the IEEE Industry Applications Annual Meeting, 1976: 91-107. [2] Iftihar M U, Bilal A, Sadarnac D, et al, Analysis of input filter interactions in cascaded buck converters[C].Proceedings of the IEEE International Conference on Idustrial Technology, 2008: 1-6. [3] Khaligh A. Realization of parasitics in stability of DC-DC converters loaded by constant power loads in advanced multiconverter automotive systems[J], IEEE Transactions on Idustrial Electronics, 2008, 55(66): 2295-2305. [4] Youssef N B H, Al Haddad K, Kanaan H Y, et al.Large-signal modeling and steady-state analysis of 1.5kW three-phase switch lelel (vienna) rectifier with experimental validation[J]. IEEE Transactions on Industrial Electronics, 2008, 55(3): 1213-1224. [5] Musavi F, Al Haddad K, Kanaan H Y, A novel large signal modeling and dynamic analysis of paralleled DC-DC converters with automatic load sharing control[C]. Proceedings of the IEEE International Conference on Industrial Technology, 2004: 536-541. [6] 王润新, 刘进军, 陈璐, 等. 用于PFC设计的DC-DC变流器大信号行为模型[J]. 电力电子技术, 2005, 39(6): 48-50. Wang Runxin, Liu Jinjun, Chen Lu, et al. Large-signal behavioral model of DC-DC converters for PFC design[J]. Power Electronics, 2005, 39(6): 48-50. [7] Tahami F, Mobed M, Molayee B. On piecewise affined large-signal modeling of PWM converters[C]. Proceedings of the IEEE International Conference on Industrial Technology, 2006: 1419-1423. [8] 陆益明, 张波.DC-DC变换器的切换仿射线性系统模型及控制[J]. 中国电机工程学报, 2008, 28(15): 16-22. [9] Oliver J A, Prieto R, Romero V, et al. Behavioral modeling of DC-DC converters for large-signal simulation of distributed power systems[C]. Proceedings of the Applied Power Electronics Conference and Exposition, 2006: 6. [10] Oraw B, Ayyanar R, Large signal average model for an extended duty ratio and conventional buck[C]. Proceedings of the IEEE 30th International Telecom- munications Energy Conference, 2008: 1-8. [11] Cid Pastor A, Martinez Salamero L, Alonso C, et al. Classification and synthesis of power gyrators[J]. IEE Proceedings of Electric Power Applications, 2006, 153(6): 802-808.
2011, Vol. 26 
