车载逆变电源的设计与开发

发布时间：2018-06-20 13:51

本文选题：车载电源 + 电流型PWM控制器　；参考：《湖南大学》2014年硕士论文

【摘要】：随着科技的发展和车辆的普及，人们逐渐将汽车视为一种可代步亦可娱乐的交通工具。越来越多的车主会在自己的车辆上装载电子设备，如：可移动电视、音响、DVD等等，且越来越多的人会在车辆上使用手机、平板等可移动电子设备。因此，车载逆变电源被越来越多的人需要。为了适应车载电子设备的需求，逆变电源的设计要求是从12V直流电源升压逆变到220V/50Hz交流输出。本文采用高频升压及正弦波逆变的方式设计了一款从12V升压逆变到220V交流电的车载逆变器。高频升压采用推挽式电路拓扑结构，控制模式采用电流型PWM控制模型。相比于其他电路拓扑结构，推挽式具有变压器体积小、利用率高，输出电流纹波小的特点。电流型PWM控制策略，相比于电压型PWM模式，前者能有效防止因磁芯偏磁带来的灾难性的影响，使电路安全工作。本文在升压设计中利用了Saber仿真软件进行辅助设计。Saber仿真能够较为准确分析电路中存在的漏感，对变压器参数的设计以及吸收回路的设计有很大的帮助。正弦波逆变器采用全桥逆变电路拓扑及SPWM控制策略，其中利用光耦电路作全桥开关管的驱动，自然采样原理作为SPWM的控制方法。经滤波后可使输出接近正弦波。本文实现了输入9~15V直流，输出220V/50Hz交流电的设计，输出功率最高可达150W。
[Abstract]:With the development of science and technology and the popularization of vehicles, people gradually regard the automobile as a kind of transport which can be used for transportation and entertainment. More and more owners will load electronic devices on their vehicles, such as mobile TV, audio DVD and so on, and more people will use mobile phones, tablets and other mobile electronic devices in their vehicles. Therefore, the on-board inverter power supply is more and more people need. In order to meet the demand of onboard electronic equipment, the design requirement of inverter power supply is from 12V DC power source boost inverter to 220 V / 50 Hz AC output. In this paper, an on-board inverter from 12V boost inverter to 220V AC inverter is designed by means of high frequency boost voltage and sine wave inverter. The push-pull circuit topology is used in the high frequency boost, and the current PWM control model is used in the control mode. Compared with other circuit topologies, push-pull type has the characteristics of small volume, high utilization ratio and small output current ripple. Compared with the voltage-mode PWM control strategy, the former can effectively prevent the catastrophic effect caused by magnetic core bias tape and make the circuit work safely. In this paper, the saber simulation software is used to analyze the leakage inductance in the circuit, which is helpful to the design of transformer parameters and the design of absorption circuit. The sinusoidal inverter adopts the full-bridge inverter topology and SPWM control strategy, in which the optocoupler is used as the drive of the full-bridge switch, and the principle of natural sampling is used as the control method of SPWM. After filtering, the output can be close to sine wave. In this paper, the design of input 9V 15V DC and output 220V / 50Hz AC is realized. The output power can be up to 150W.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM464

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