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基于调制函数模型预测直接功率控制的单相PWM整流器
Modulation-Function-Based Model Predictive Direct Power Control of Single-Phase PWM Converters
投稿时间:2018-04-28  修订日期:2018-06-24
DOI:
中文关键词:  单相PWM整流器  模型预测控制  直接功率控制  调制函数
英文关键词:Single-Phase PWM Converters  Model Predictive Control  Direct power control  optimal modulation function
基金项目:
作者单位E-mail
郑征 河南理工大学电气学院 1806181030@qq.com 
张娟娟 河南理工大学 643175933@qq.com 
陶慧 河南理工大学电气学院 taohui@hpu.edu.com 
摘要点击次数: 387
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中文摘要:
      摘要:有限集模型预测直接功率控制(FCS-MP-DPC)算法是利用系统模型来预测下一周期的有功无功功率,通过迭代寻优得到使给定功率与实际功率之间误差最小的电压矢量进行控制,它存在着在线计算量大、开关不固定、谐波畸变率高等问题。基于此,提出一种基于调制函数的模型预测直接功率控制(MP-DPC)算法,该算法是利用整流器输入端电压面积等效的原则,引入调制函数,再根据功率误差最小的评价函数选择最优调制函数,最后结合PWM模块将调制函数转转成开关状态进行控制。与FCS-MP-DPC算法相比,提出的MP-DPC算法有效降低了FCS-MP-DPC逐个迭代寻优的计算量,同时固定了开关频率,降低了电流谐波畸变。最后Matlab/Simulink仿真和半实物实验验证了该算法的正确性。
英文摘要:
      Abstract: Finite Set Model Predictive Control (FSC-MPC) uses the system model to predict the future value of active /reactive power and obtains the best voltage vector minimizing the power errors by enumeration. It has problems such as large amount of online calculations, changes in switching frequency with operating points, high harmonic distortion, etc. this paper proposes a Modulation-Function-Based MPC-DPC,it uses the relationship between the effective voltage vector and the input voltage of the rectifier, introduces the modulation function, and then selects the optimal effective voltage vector and the corresponding optimal modulation function according to the cost function. Finally, the PWM is used to generate the driving pulse for power control. The proposed algorithm can not only reduce the computational complexity, but also fix the switching frequency and reduce the harmonic distortion, compared to the FSC-MPC. Finally, simulation and experiments results also verify the correctness of this algorithm.
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