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Study on the Digitally Controlled System of ZCS-QRC Synchronous Buck Converter

机译:ZCS-QRC同步降压转换器的数字控制系统研究

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This paper analyses the basic characteristic of digitally controlled ZCS-QRC synchronous buck converter, calculates the accurate value of on time, off time and dead times of switching MOSFETs, and puts forward an averaged switch model of the converter. In the digitally controlled system, the algorithm of online adaptive tuning digital PID regulator is used to obtain good dynamic performances. The dead times are estimated by online Dead Time Optimizer, which guarantees the power switches working at the conditions of zero currents or zero voltages and high efficiency of the converter. The converter has lower EMI and higher precision of averaged switch model, and has very good convert efficiency under the condition of the load current is not very low. It will be helpful for the design and implementation of the digital control system with the precise averaged switch model.
机译:本文分析了数字控制ZCS-QRC同步降压转换器的基本特性,计算了开关MOSFET的准确值,关闭时间,关闭时间和死亡时间,并提出了转换器的平均交换机模型。在数字控制系统中,在线自适应调谐数字PID调节器的算法用于获得良好的动态性能。在线死区时间优化器估计死亡时间,可确保在零电流或零电压条件下工作的电源开关以及转换器的高效率。转换器具有较低的EMI和更高的平均开关模型精度,并且在负载电流的状态下具有非常好的转换效率不是很低。利用精确的平均开关模型,有助于设计和实现数字控制系统。

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