内燃约束活塞-直线发电机运行机理研究  

Research on Operation Mechanism of Internal Combustion Constrained Piston-Linear Generator

作　　者：周雨 赵博 张铁柱 杨彬彬 ZHOU Yu;ZHAO Bo;ZHANG Tie-zhu;YANG Bin-bin(School of Electrical and Electronic Engineering,Shandong University of Technology,Shandong Zibo 255000,China)

机构地区：[1]山东理工大学电气与电子工程学院,山东淄博255000

出　　处：《机械设计与制造》2024年第12期296-302,共7页Machinery Design & Manufacture

基　　金：国家自然科学基金面上项目(52075307);淄博市校城融合发展计划项目(2019ZBXC387)。

摘　　要：针对传统车用余热回收系统中能量传递链条长,机电能量转换效率低下的问题,这里提出一种内燃约束活塞发电系统,该系统取消了传统的旋转式发电机转而采用直线发电机与活塞、曲轴直接连接的方式,大大缩短了能量传递链条。在此系统的基础上研究设计了一款适用于该系统的圆筒型永磁直线发电机,对处在变速往复周期运动状态下的圆筒型永磁直线发电机发电运行机理进行了研究,并对其空载及负载工况展开分析。首先,结合发动机系统的活塞运动规律,推导了变速往复周期下的直线电机空载电动势表达式,并以此优化直线电机的结构设计。其次,根据电磁计算搭建电机的有限元模型分析其空载工况,并通过有限元仿真结果对公式推算进行验证。最后,研究了电机按正弦规律往复运动时负载工况下的功率、损耗和效率表现,结果符合设计要求验证了其合理性,为内燃约束活塞-直线发电机系统的设计提供了理论依据。In order to solve the problems of long energy transmission chain and low electromechanical energy conversion efficiency in the traditional vehicle waste heat recovery system,this paper proposes a internal combustion confined piston power generation system,which cancels the traditional rotary generator and adopts the direct connection mode of linear generator with piston and crankshaft,thus greatly shortening the energy transmission chain.On the basis of this system,this paper studies and designs a cylindrical permanent magnet linear generator suitable for this system,and studies the power generation operation mechanism of the cylindrical permanent magnet linear generator in the state of variable speed reciprocating periodic motion,and analyzes its no-load and load working conditions.Firstly,according to the piston motion law of the engine system,the expression of no-load electromotive force of linear motor under variable speed reciprocating cycle is derived,and the structural design of linear motor is optimized by this expression.Secondly,the finite element model of the motor was built based on electromagnetic calculation to analyze its no-load working condition,and the formula was verified by the finite element simulation results.Finally,the output power,various loss characteristics and efficiency of motor reciprocating according to sinusoidal law are studied.The simulation results meet the design requirements and verify the rationality of the model,which provides a theoretical basis for the design of internal combustion confined piston power generation system.

关 键 词：内燃约束活塞发电系统 圆筒型永磁直线发电机 正弦往复运动 

分 类 号：TH16[机械工程—机械制造及自动化]