文档介绍：河北大学
硕士学位论文
基于SPWM技术的独立逆变电源设计
姓名:宋淑苹
申请学位级别:硕士
专业:通信与信息系统
指导教师:陆原
2011-06
摘要
摘要
当今社会不断发展,能源短缺成为人们关注的重要问题之一。风能、太阳能等可再
生资源的利用,得到广泛关注。于是,如何将蓄电池、发电机等所供给的直流或交流电
转化成设备所需要的交流电成为逆变电源研制领域所要解决的问题。
文章首先介绍了逆变过程中采用的核心技术原理,即 SPWM 技术;其次,对逆变
电源系统的主要电路设计进行了详细介绍,该电路设计主要分为高频升压电路,整流电
路,全桥逆变电路以及保护电路。文章对电路设计中涉及的各个控制芯片做以介绍,重
点是通过采用芯片 PIC16F716 对电路系统的控制,通过该芯片实现了对反馈电压的控制
调节及短路保护,更重要的是利用其 PWM 波形输出功能有效的输出 SPWM 序列,完
成 SPWM 专用芯片的设计,实现对全桥逆变电路的控制;文章还对系统软件编程部分
做了分析,详细介绍了程序设计中用到的各个寄存器及其功能,给出了程序设计流程图。
随着高频技术的不断发展,高频变压器的应用也日渐丰富,课题设计中高频升压电路单
元中涉及到了高频变压器的应用,于是文章最后介绍了在本设计参数要求下的高频变压
器的设计,文中介绍了两种变压器磁芯选择法,得出磁芯型号后通过计算得到各个所需
参数可供实体设计作为参考。本文从硬件和软件两方面展开分析,对逆变电源的设计具
有一定的参考价值。

关键词逆变电源 SPWM 技术全桥逆变高频变压器

I
Abstract
Abstract
With the development of the social technology, the shortage of energy es one of
the most important issues which are concerned. Wind, solar energies for the use of renewable
resources, are widely public concerned. So how will the battery and the generator for the
supply of direct or alternating current into device needs to be against the power sector has
developed to solve the problem. AC or DC supply into AC power which are needed for
devices e the focus of inverter development to solve the issue. This article is based on
this issue analysis.
Firstly the article introduces the inverter core technology. The technology which is
SPWM technology is used in the process; Secondly, the circuit design of inverter power
system is analyzed in detail, the circuit is posed of a high-frequency step-up
circuit, rectifier circuit, level frequency inverter circuit. The article also introduces each
control chip which are involved in the circuit design. A focus on the circuit by using
PIC16F716 chip plays an important part in the system controlling, which achieves through the
chip to control the feedback voltage regulation and short circuit protection. More
importantly,it is the use of the PWM waveform output function valid output SPWM