基于DC/DC变换器电流纹波的多步模型预测控制  

Multi-step Model Predictive Control Based on Current Ripple of DC/DC Converter

作　　者：殷洁 廖冬初[1] 蔡华锋[1] 孙得金 YIN Jie;LIAO Dong-chu;CAI Hua-feng;SUN De-jin(Hubei University of Technology,Wuhan 430068,China;不详)

机构地区：[1]湖北工业大学电气与电子工程学院,湖北武汉430068 [2]武汉征原电气有限公司,湖北武汉430012

出　　处：《电力电子技术》2023年第5期109-111,共3页Power Electronics

基　　金：教育部科技发展中心2021年全国高校产学研创新基金(2021IA05025)。

摘　　要：在移相全桥变换器中,由于输出功率的脉动,输入电流和输出电感电流均存在大量纹波。提出了一种基于DC/DC变换器负载的模型预测控制策略来抑制输出电感电流的纹波含量。而传统的模型预测控制只能保证其在一个周期内控制为最优量,从而降低系统的控制精度,为了提高系统的控制性能,采用一种多步模型预测控制策略,通过计算代价函数使系统在两个周期中均得出最优控制量。最后搭载了仿真模型验证其控制策略的可行性,并将其运用在实验平台直流电子负载中。In the phase shifted full bridge converter,there are a lot of ripples in the input current and the output inductor current due to the output power ripple.A model predictive control strategy based on DC/DC converter load is proposed to suppress the ripple content of output inductor current.The traditional model predictive control can only ensure that it is controlled as the optimal quantity in one cycle,thus reducing the control accuracy of the system.In order to improve the control performance of the system,a multi-step model predictive control strategy is adopted,and the optimal control quantity is obtained in both cycles by calculating the cost function.Finally,the simulation model is used to verify the feasibility of the control strategy,and it is applied to the test platform DC electronic load.

关 键 词：变换器 电流纹波 代价函数 多步模型预测控制 

分 类 号：TM46[电气工程—电器]