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随着汽车工业的发展，对轻型电动车的需求也在增加。为了深入了解无传感器BLDC在轻型电动汽车控制领域的应用，本文开展了相关研究工作。采用Simulink对无传感器无刷直流电机控制系统的三相逆变器进行了建模和仿真。制定了一套用于轻型电动车驱动系统三相逆变器的要求规范。根据设计要求，在Altium Designer中设计了两种不同的无传感器控制方式的三相逆变器，完成了PCB生产制造、软件控制算法以及驱动程序实现。

本文对三相逆变器及其控制算法进行了测试和评估。三相逆变器在无传感器控制下以高于300RPM的电机速度成功运行，适用于轻型电动车辆。

With an evolving vehicle industry there hasbeen an increase in the demand for light electric vehicles. This thesis wasconducted in order to gain further knowledge within the field of sensorlessBLDC motor control for light electric vehicles. A three phase inverter wasmodeled and simulated in Simulink with sensorless BLDC motor control. Arequirement specification for a three phase inverter in a drive system for alight electric vehicle was made. From the requirement specification a threephase inverter with two different sensorless control approaches was designed inAltium Designer. The PCB was manufactured and software control algorithms aswell as drivers were implemented. The three phase inverter and its controlalgorithms were tested and evaluated. The three phase inverter operatessuccessfully with sensorless control at a motor speed above 300RPM and fitsinto a light electric vehicle.

1 引言

2 技术背景

3 建模与仿真

4 逆变器设计

5 软件设计

6 验证与评估结果

7 结束语

附录A 逆变器输出电压计算

附录B 控制器PCB原理图

附录C 电源PCB原理图

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