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A sliding-mode controller with zero forced zero PWM for full bridge inverter

To make maximum use of degrees of freedom of the full bridge inverter circuit switching device, the idea of the single polarity sine pulse width modulation (SPWM) is introduced to the sliding mode control in full bridge inverter to reduce the switching loss. | Journal of Automation and Control Engineering Vol. 4, No. 3, June 2016 A Sliding-Mode Controller with Zero Forced Zero PWM for Full Bridge Inverter Shunshi Zhong, Xiucheng Dong, and Xiaomei Yu XiHua University, City, CountryChina Email: {zhongshunshi, dxc136, yuxiaomei}@163.com to control the inherent variable structure system of the inverter. Document [10] firstly applies sliding-mode control to single-phase inverter, and then gives the switching line and control action, and experimental results verify the advantage of sliding-mode control. Document [14] analyzes sliding-mode control inverter systematically. These can show that sliding-mode control inverter has good dynamic property and robustness. Furthermore, many sliding-mode methods are analyzed for inverter [1]-[4], [15]-[16]. This paper conducts a research on the key design technology of sliding-mode control full bridge inverter, and sets up the variable structure model, determining switching line and switch control law. To make maximum use of degrees of freedom of the full bridge inverter circuit switching device, the idea of the single polarity sine pulse width modulation (SPWM) is introduced to the sliding mode control in full bridge inverter to reduce the switching loss. Furthermore, zero forced zero sliding mode PWM is used to suppress voltage distortion caused by sliding mode surface passing zero modulation. Simulation results are given to verify the correctness and validity of implemented zero forced zero sliding mode PWM for full bridge inverter. Abstract—Sliding mode control scheme for the full bridge inverter was analyzed, including modeling the variable structure system, selecting the switching line and control law. To make maximum use of degrees of freedom of the full bridge inverter circuit switching device, the idea of the single polarity sine pulse width modulation (SPWM) is introduced to the sliding mode control in full bridge inverter to reduce the switching loss. Furthermore, zero forced