太阳能闸门启闭机驱动系统研究

发布时间：2018-01-16 14:36

本文关键词：太阳能闸门启闭机驱动系统研究　出处：《湖北工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：闸门启闭机对水库排水蓄水有着重要作用,但其启停机运行一般需要电力驱动,这给闸门启闭机的使用带来了一定的限制,如对某些区域无电网,架设电力线路成本昂贵的情况,而太阳能资源丰富,具有无污染、无区域限制等优点。因此,如将太阳能作为闸门启闭机驱动能源,不仅可以解决闸门启闭机在无市电供应的情况下的供电问题,而且有利于扩大启闭机在水利方面的使用范围,提高水利资源的利用率。本文通过对太阳能闸门启闭机系统的功能要求和控制机理分析,在现有研究成果的基础上,对闸门启闭机驱动系统总体方案、中小型闸门启闭机参数要求、太阳能电池的输出功率影响因素、优化MPPT控制策略、无刷直流电机驱动控制策略等进行了系统研究。首先建立了太阳能电池输出特性数学模型,对各种传统最大功率点跟踪方法进行了分析,提出基于数据采集的变步长增量电导法,并进行仿真验证控制算法的可行性和有效性。然后选定具有功率密度大、效率高、调速性能和起动性能优良的永磁无刷直流电机作为太阳能闸门启闭机的驱动电机。为实现永磁无刷直流电机定子绕组正确换相,采用改进型线反电势过零检测技术。同时为解决功率器件产生高频干扰的问题,选用二阶有源滤波电路进行滤波处理。最后为验证无位置传感器控制算法控制效果,用数字信号处理器TMS320F2812作为电机驱动控制芯片,进行硬件电路设计,建立无刷直流电机驱动控制系统,实现电机速度、电流双闭环控制,实验表明:本文采用的线电势过零检测技术,使无刷直流电机具有良好的运行性能。
[Abstract]:Gate hoist plays an important role in reservoir drainage and storage, but its start-up and shutdown generally need to be driven by electric power, which brings some restrictions to the use of gate hoist, such as no power grid in some areas. It is very expensive to set up power lines, but solar energy is abundant, no pollution, no area restriction and so on. Therefore, for example, solar energy is used as the driving energy of gate hoist. It can not only solve the power supply problem of gate hoist without electricity supply, but also expand the scope of application of the hoist in water conservancy. Through the analysis of the function requirements and control mechanism of the solar gate hoist system, based on the existing research results, the overall scheme of the gate hoist drive system is proposed. The parameters of the middle and small gate hoist are required, the output power of the solar cell is affected by the factors, and the MPPT control strategy is optimized. The drive and control strategies of brushless DC motor are systematically studied. Firstly, the mathematical model of solar cell output characteristics is established, and the traditional maximum power point tracking methods are analyzed. A variable step size incremental conductance method based on data acquisition is proposed, and the feasibility and effectiveness of the control algorithm are verified by simulation. Then, the method with high power density and high efficiency is selected. The permanent magnet brushless DC motor with excellent speed regulation and starting performance is used as the driving motor of the solar gate hoist. In order to realize the correct commutation of the stator winding of the permanent magnet brushless DC motor. In order to solve the problem of high frequency interference of power devices, an improved line back EMF detection technique is adopted. In order to verify the control effect of the sensorless control algorithm, the digital signal processor (TMS320F2812) is used as the motor drive control chip. Hardware circuit design, the establishment of brushless DC motor drive control system, the motor speed and current double closed loop control, experimental results show that: the linear potential zero detection technology adopted in this paper. Brushless DC motor has good performance.
【学位授予单位】：湖北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TV664

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