叉车永磁同步电机驱动器设计

【作者】 王超尘；

【导师】 杜国平；

【作者基本信息】 南京理工大学 ， 控制理论与控制工程， 2012， 硕士

【摘要】 电动叉车相比于内燃叉车而言,具有无污染、低噪声、能源利用率高等显著优点,近年来随着全社会环保意识的增强,电动叉车技术得到了飞快的发展,市场保有量逐年提高,而作为其核心的驱动系统成为当前研究的热点。本文以此为背景,完成了叉车永磁同步电机驱动器的设计工作。论文首先介绍国内外电动叉车的发展现状以及电动叉车交流驱动技术的优势,深入研究分析永磁同步电机的结构特点、数学模型、矢量控制方法及SVPWM波产生原理,并在此基础上给出了一套叉车永磁同步电机驱动器的控制方案。本系统采用高性能DSP芯片TMS320F2812作为控制电路的核心,由控制电路输出PWM信号,PWM驱动器触发主回路逆变器动作从而实现对永磁同步电机的驱动。根据电动叉车以及逆变电路的特点,设计了叉车过电流保护电路、电池欠压监测电路、电池过压报警电路、功率MOSFET驱动电路、逆变电路、叉车参数编程监控接口等外围电路。最后对系统进行了综合调试,在此基础上做了大量的实验测试,实验结果表明,该叉车永磁同步电机驱动器能够满足叉车运行指标的要求,运行可靠,具有很好的实用价值。更多还原

【Abstract】 Compared to internal combustion forklifts,electric forklift has been widely used because of its own advantages, such as high energy efficiency, less pollution, etc. As the environmental awareness of society as a whole has increased dramatically in recent years, electric forklift technology has been rapid development and market demand grows year by year. The drive system, as the core of electric forklifts becomes a research focus recently. This paper is intended to design forklift permanent magnet synchronous motor (PMSM) drives.The paper first describes the development status of the electric forklift at home and abroad as well as the advantages of the AC drive technology in electric forklift. Also, it analyzes forklift-based structural characteristics of PMSM and deduces its mathematical model. Moreover, it explains the PMSM vector control method and SVPWM wave principle. Finally, on this basis the design of forklift PMSM control scheme is created.The system adopts High performance DSP chip TMS320F2812 as the core of the control circuit. The control circuit outputs a PWM signal and the PWM drives to trigger the main loop inverter action in order to achieve a PMSM drive. According to the characteristics of electric forklifts and the inverter circuit, it designs the peripheral circuit of the forklift, such as the forklift overcurrent protection circuit, low battery voltage monitoring circuit, the MOSFET driver circuit, inverter circuit, and forklifts parameter programming monitoring interface.Finally, the system has been integrated debugging and conducted a lot of experimental tests. The experimental results show that PMSM drive of the forklifts has a stable and reliable performance with good practical value.更多还原