无刷直流电机能量回馈制动系统的研究与设计

发布时间：2018-06-28 07:10

本文选题：无刷直流电机 + DSP　；参考：《河北工程大学》2014年硕士论文

【摘要】：无刷直流电机是一种新型电机，主要由定子、转子、绕组、位置传感器组成，没有电刷组成的机械构造和换向器。具有高效率，结构简单，体积小，高可靠性等特点。随着永磁材料、电子技术和新型控制理论的发展，使无刷直流电机具有广泛的应用前景。本文首先介绍了能量回馈制动技术的国内外研究现状，分析了电机的发展。通过对无刷直流电机结构以及无刷直流电机的正反转特性的研究分析，建立了无刷直流电机的数学模型，介绍无刷直流电机能量回馈控制系统原理。为了实现能量回馈制动控制系统，根据无刷直流电机驱动特性，利用单侧斩波方法和PWM的控制对无刷直流电机能量回馈制动系统的控制部分做出研究。该系统以DSP2812为控制核心，设计控制电路、主电路、驱动电路以及检测电路等，对无刷直流电机进行控制，，当制动产生时，采用PWM技术对主电路功率管的导通和关断进行控制，并检测直流母线电压，当直流母线电压大于蓄电池电压时，则向蓄电池充电，从而达到制动能量回收的效果。采用Matlab建立无刷直流电机能量回馈控制系统的仿真模型，编写能量回馈控制系统的模糊控制仿真程序，并验证了算法的有效性。为了对本文所设计的无刷直流电机能量回馈制动控制进行验证，本文对基于DSP的无刷直流电机的能量回馈制动系统做了详细试验，验证了本文设计的无刷直流电机能量回馈控制系统的可行性，稳定性和调试的方便性。
[Abstract]:Brushless DC motor (BLDCM) is a new type of motor, which consists of stator, rotor, winding, position sensor and no brushless mechanical structure and commutator. With high efficiency, simple structure, small size, high reliability and other characteristics. With the development of permanent magnet materials, electronic technology and new control theory, brushless DC motor has a wide application prospect. This paper first introduces the research status of energy feedback braking technology at home and abroad, and analyzes the development of motor. Based on the research and analysis of brushless DC motor structure and the positive and negative characteristics of brushless DC motor, the mathematical model of brushless DC motor is established, and the principle of brushless DC motor energy feedback control system is introduced. In order to realize the energy feedback braking control system, according to the driving characteristics of brushless DC motor, the control part of the energy feedback braking system of brushless DC motor is studied by using single-side chopper method and PWM control. The system takes DSP2812 as the control core, designs the control circuit, the main circuit, the drive circuit and the detection circuit, and controls the brushless DC motor. When the brake occurs, PWM technology is used to control the switch on and off of the power tube of the main circuit. The DC bus voltage is detected, and when the DC bus voltage is larger than the battery voltage, the battery is charged and the braking energy is recovered. The simulation model of brushless DC motor energy feedback control system is established by Matlab, and the fuzzy control simulation program of energy feedback control system is compiled, and the validity of the algorithm is verified. In order to verify the energy feedback braking control of brushless DC motor designed in this paper, the energy feedback braking system of brushless DC motor based on DSP is tested in detail in this paper. The feasibility, stability and debugging convenience of the brushless DC motor energy feedback control system designed in this paper are verified.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM33

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