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DIGITAL CONTROL SYSTEM APPLIED TO A PFC BOOST CONVERTER OPERATING IN MIXED CONDUCTION MODE

机译:数字控制系统应用于混合传导模式下的PFC升压转换器

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This paper proposes a digital control system applied to a power factor correction boost converter rated to a wide range of output power, operating in mixed conduction mode with fixed switching frequency. The control system is composed of an input current controller and an output voltage controller. The current controller comprises two predictive model-based control laws (one for the continuous conduction mode and another for the discontinuous conduction mode) and an operation mode selection algorithm, which is responsible for detecting the operation mode and selecting the appropriate control law. The output voltage is regulated using a proportional-integral voltage controller. Simulation and experimental results applying a low cost microcontroller are shown to ensure the operation of the proposed control system.
机译:本文提出了一种应用于功率因数校正升压转换器的数字控制系统,额定到宽范围的输出功率,以固定开关频率的混合传导模式操作。控制系统由输入电流控制器和输出电压控制器组成。当前控制器包括两个基于预测模型的控制规律(一个用于连续导通模式,另一个用于不连续传导模式)和操作模式选择算法,其负责检测操作模式并选择适当的控制法。使用比例整体电压控制器调节输出电压。示出了应用低成本微控制器的仿真和实验结果,以确保所提出的控制系统的操作。

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