Abstract：In this paper, the small signal model for dual-Buck inverter as well as its control scheme is developed, and a regulation of voltage and current feedback loop with resonant controller is researched. The current inner loop is controlled by hysteresis, which has the characters of simple implementation, a rapid dynamic response and unconditional stability. Voltage outer loop ensures sinusoidal output voltage with good reliability and steady-state properties. In addition, the introduction of resonant controller makes the system output external characteristics significantly improved. Compared with the traditional method of using current feed-forward loop to improve the load disturbance rejection capabilities, this new method improves the steady-state performance and saves the cost without the additional control loop. Simulation and experimental results verify the correctness of the theoretical analysis. The system achieves a better output waveform quality, fast dynamic response, precise regulation accuracy, and high efficiency.
马海啸, 陈凯, 龚春英. 双Buck逆变器的建模与优化设计[J]. 电工技术学报, 2012, 27(8): 35-41.
Ma Haixiao, Chen Kai, Gong Chunying. Modeling and Optimization Design of Dual-Buck Inverter. Transactions of China Electrotechnical Society, 2012, 27(8): 35-41.
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