鲁述豪,肖进,张宸,等.基于准比例谐振控制的自由活塞内燃直线发电机发电策略[J].内燃机工程,2023,44(6):100-108.
基于准比例谐振控制的自由活塞内燃直线发电机发电策略
Power Generation Strategy of A Free Piston Engine Linear Generator Based on Quasi Proportional Resonance Control
DOI：10.13949/j.cnki.nrjgc.2023.06.012
关键词:自由活塞内燃直线发电机  准比例谐振控制  空间矢量脉宽调制  电压控制
Key Words:free piston engine linear generator（FPLG）  quasi proportional resonance control  space vector pulse width modulation  voltage control
基金项目:上海市科学技术委员会项目（19511108500）
作者单位E-mail
鲁述豪* 上海交通大学 动力机械及工程教育部重点实验室，上海 200240 lushuhao@sjtu.edu.cn 
肖进 上海交通大学 动力机械及工程教育部重点实验室，上海 200240  
张宸 上海交通大学 动力机械及工程教育部重点实验室，上海 200240  
程莹东 上海交通大学 动力机械及工程教育部重点实验室，上海 200240 chengyingdong@sjtu.edu.cn 
王金龙 上海交通大学 动力机械及工程教育部重点实验室，上海 200240 jinlongwang@sjtu.edu.cn 
黄震 上海交通大学 动力机械及工程教育部重点实验室，上海 200240  
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摘要:针对自由活塞内燃直线发电机稳定运行时产生的三相感应电动势难以直接应用到负载或动力电池的问题，提出了基于电压外环比例积分（proportion integration， PI）、电流内环准比例谐振（quasi proportional resonance， QPR）的双闭环交流/直流（alternating current/direct current， AC/DC）控制策略加上基于PI的双向直流/直流（direct current/direct current， DC/DC）控制策略，将直线发电机产生的三相感应电动势转换为稳定可控的直流电压。首先根据双闭环AC/DC控制策略生成控制三相电压源型整流器开关管通断的信号，将三相感应电动势整流为波动较小的直流电压，然后通过双向DC/DC控制策略将波动的直流电压转换为稳定可控的电压，最后在MATLAB/Simulink环境下搭建了相应的控制模型进行验证。仿真结果表明，双闭环AC/DC控制策略中电流内环采用QPR控制相比于PI和比例谐振（proportional resonance， PR）控制直流侧电压具有更快的响应速度和更小的电压纹波，可以在0.3 s稳定在400 V，电压纹波为48.9 V。在加入DC/DC转换器后直流侧电压可以在0.2 s稳定在300 V。
Abstract:To handle with the difficulty in applying three-phase induced electromotive force generated during stable operation of a free piston engine linear generator to the load or power battery， a dual closed loop alternating current/direct current（AC/DC） converter control strategy which based on voltage outer loop proportional integration（PI） control and current inner loop quasi proportional resonance（QPR） control was proposed， along with a bidirectional direct current/direct current（DC/DC） control strategy based on PI. This strategy can convert the three-phase induced electromotive force into a stable and controllable DC voltage. According to the dual closed loop AC/DC control strategy， a signal was generated to control the on-off of the switch tube of the three-phase voltage source rectifier， which rectified the three-phase induced electromotive force into a DC voltage with less fluctuation. Then， through the bidirectional DC/DC control strategy， the fluctuating DC voltage was converted into a stable and controllable voltage. Finally， a corresponding control model was built in the MATLAB/Simulink environment. The simulation results show that in the dual closed loop AC/DC control strategy， QPR control brings faster response speed and smaller voltage ripple on the DC side voltage compared to PI and proportional resonance control. The DC side voltage can stabilize at 400 V within 0.3 s， with a voltage ripple of 48.9 V. After adding a DC/DC converter， the DC side voltage can stabilize at 300 V within 0.2 s.
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