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| Modeling and Optimization Design of Dual-Buck Inverter |
| Ma Haixiao1, Chen Kai2, Gong Chunying2 |
| 1. Nanjing University of Ports and Telecommunications Nanjing 210046 China 2. Nanjing University of Aeronautics and Astronautics Nanjing 210016 China |
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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.
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Received: 12 July 2010
Published: 20 March 2014
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2012, Vol. 27 
