无刷直流电机正弦波控制系统研究及实现

Again, a few key issues encountered in the process of designing the sinusoidal waveform control system, such as, the position and speed estimation, the start-up mode of motors, had been obtained comprehensive exposition. A PWM phase-shift technology had putted forward to solve the problem of current reconstruction easy to fail in low modulation areas.
最后，设计了系统实验平台。其中硬件主要由主控芯片 STM32F030、电源 模块、MOS 驱动模块、电流采样模块、过流保护模块、刹车模块组成；软件程 序利用汇编语言编写，设计实现了主体结构程序、初始化程序、三角函数运算程 序、SVPWM 运算程序、相电流重构程序、PI 调节程序。最后软硬件调试成功， 通过对实验数据的记录和分析，证明了本文设计方案的可行性、实用性和先进性。 关键词：正弦波，无刷直流电机，SVPWM，电流重构，转子位置角估算，电源 电路，三角函数
The sinusoidal waveform control system of brushless DC motor which was based on space vector pulse width modulation (SVPWM) has been studied. Firstly, the basic structure of the brushless DC motor was introduced. On this basis, the generating mechanism of rotating magnetic field and the motor operating principle were analyzed deeply. Considering of the air gap magnetic field distribution and the motor mathematical model in the three-phase coordinate system, the mathematical model of the motor in the d-q coordinate system was deduced, which demonstrated the feasibility of controlling brushless DC motor through decoupling.
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无刷直流电机正弦波控制系统研究及实现
Abstract
As a typical representative of mechatronical process, the brushless DC motor has received extensive attention due to its advantages, such as small size, light weight, high efficiency, low inertia and wide speed range. In addition, its corresponding mechanical characteristics is similar to the DC motor. Therefore, its traces can be found in the most areas which are from the aviation to exploration of the sea. The traditional 120 ° square-wave operation mode exists low defects, for example, torque ripple, large operating noise, energy efficiency and so on. Therefore, the research to find out an excellent strategy in the motor control system is more imperative.
其次，比较了正弦波脉宽调制技术与空间电压矢量脉宽调制技术；着重论述 了空间电压矢量脉宽调制原理与算法，并以此为基础，设计了基于 id 0 运行方 式的正弦波控制系统仿真模型，仿真结果证明了正弦波控制无刷直流电机的可行 性。
再次，本文针对在设计正弦波控制系统的过程中所遇到的几个关键性问题 （如电流重构技术、转子转速及空间位置估算、电机启动方式）进行了全面的阐 述；针对低调制区电流重构容易失败的问题，提出了 PWM 移相技术。
保 密 □，在 年解密后适用本授权书。 本学位论文属于 不保密 □。
学位论文作者签名： 年 月日
指导教师签名： 年 月日
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江苏大学硕士学位论文
摘要
作为机电一体化进程中的典型代表，无刷直流电机以体积小、重量轻、效率 高、惯量小、调速范围宽的优点而受到广泛关注。除此之外它所对应的机械特性 也与直流电机类似，因此，上至航空，下至探海的各大领域都能发现它的踪迹。 而传统 120°方波运行方式在电机使用中存在转矩脉动大，运行噪音大，能源利 用率低等缺点。所以，研究性能更加优良的控制系统势在必行。
指导教师
贾洪平 副教授
作者姓名
张鹏
申请学位级别 工程硕士 学科(专业) 电气工程
论文提交日期 2016 年 4 月 论文答辩日期 2016 年 6 月
学位授予单位和日期 江苏大学
2016 年 6 月
答辩委员会主席 评阅人
万方数据
无刷直流电机正弦波控制系统研究及实现
独创性声明
本人郑重声明：所呈交的学位论文，是本人在导师的指导下，独 立进行研究工作所取得的成果。除文中已注明引用的内容以外，本论 文不包含任何其他个人或集体已经发表或撰写过的作品成果。对本文 的研究做出重要贡献的个人和集体，均已在文中以明确方式标明。本 人完全意识到本声明的法律结果由本人承担。
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无刷....................................................................................................................I Abstract ......................................................................................................................... II 目 录 .........................................................................................................................IV 第一章 绪 论 ............................................................................................................. 1
Next, sinusoidal pulse width modulation technique and space vector pulse width modulation technique were compared each other. The principle and algorithm of space vector pulse width modulation were discussed, which provided theoretical sources and design ideas to building the Simulation Module or writing software program. The sinusoidal waveform control system simulation mode based on operation mode was designed. The feasibility of controlling brushless DC motors by sinusoidal waveform was proved through the simulation waveforms.
分类号： UDC：
TM351 621.3
密级： 公开 编号： 10299Z1307035
专业硕士学位论文
无刷直流电机正弦波控制系统研究及实现 Research and Implementation of Sinusoidal-wave Control
System for Brushless DC Motor
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江苏大学硕士学位论文
Finally, the experimental platform was designed. The hardware consisted of a master chip—STM32F030, power module, MOS driving module, current sampling module, overcurrent protection module, brake module. The software programs were written by assembly language, which were designed to finish the main structure of the program, the initialization procedure, trigonometric operation procedures, SVPWM operation program, phase current reconstruction program, PI adjustment program. Finally, hardware and software were debugged successfully. According to the recording and analysis of experimental data, the plan which was devised in this paper was feasible, practical and advanced. Key words: sinusoidal waveform, brushless DC motor, SVPWM, current refactoring, rotor position and angle estimation, power circuit, trigonometric function