大功率IGBT模块高可靠驱动及通信技术研究

发布时间：2018-05-12 10:22

本文选题：PEBB + 数模混合驱动　；参考：《浙江大学》2015年硕士论文

【摘要】：随着电力电子器件不断革新,电力电子技术已经渗透入电力行业的各个领域。IGBT作为全控型器件的典型代表,以其各种优越性能,得到广泛应用,并推动着电力电子技术向大功率、集成化、模块化的方向发展。在电力电子模块化系统中,IGBT驱动和模块通信技术决定着整个系统的控制效率和可靠性,对系统的安全运行至关重要。因此,本文以基于IGBT并联的大功率PEBB模块为研究对象,对IGBT模块的高可靠驱动及通信技术进行了研究。本文研究了驱动电路的一般设计方法,对并联驱动时的均流问题给出了一般性的解决方案。针对IGBT工作时可能会遇到的各种故障,给出了相应的检测方案,并着重研究了IGBT的开关尖峰电压问题。在充分研究了传统抑制开关尖峰电压方法的基础上,提出了一种数字实现的驱动脉冲边沿调制技术,并将该技术应用到数模混合驱动器上,实现了对开关尖峰电压的抑制,克服了传统方法需要增加额外的抑制电路的缺点,通用性强。提出了一种适用于大规模电力电子模块化系统的单光纤环网通信策略,克服了传统并行通信中存在的随着模块数目增多,装置连线复杂,安装维护困难的问题。设计了单光纤环网通信协议,采用伪同步传输方式及特殊的延时补偿策略,使得每个模块的通信延时降低,控制达到同步性提高。最后,设计了基于IGBT并联的半桥功率模块,并用所设计的功率模块搭建了一个单相H桥逆变器,验证了本文中所提方法在主功率下的正确性和实用性。
[Abstract]:With the continuous innovation of power electronic devices, power electronics technology has penetrated into all fields of the power industry. IGBT as a typical representative of full-control devices, with its various superior performance, has been widely used. And promote the power electronics technology to the direction of high power, integration, modularization. In the power electronic modularization system, IGBT driver and module communication technology determine the control efficiency and reliability of the whole system, which is very important to the safe operation of the system. Therefore, the high reliability driving and communication technology of IGBT module is studied in this paper, which is based on IGBT parallel high power PEBB module. In this paper, the general design method of drive circuit is studied, and a general solution to the problem of current sharing in parallel drive is given. In view of various faults that may occur in IGBT, the corresponding detection scheme is given, and the problem of switching peak voltage of IGBT is studied emphatically. Based on the study of the traditional method of suppressing the switching peak voltage, a digital actuated pulse edge modulation technique is proposed and applied to the digital-analog hybrid driver to suppress the switching peak voltage. It overcomes the shortcoming that the traditional method needs to add extra suppression circuit and has strong generality. This paper presents a single fiber loop network communication strategy for large scale power electronic modularized systems, which overcomes the problems existing in traditional parallel communication, such as the increase of the number of modules, the complex connection of devices, and the difficulty of installation and maintenance. The communication protocol of single fiber optic ring network is designed. The pseudo-synchronous transmission mode and special delay compensation strategy are adopted to reduce the communication delay of each module and to improve the synchronization of control. Finally, a half-bridge power module based on IGBT parallel connection is designed, and a single-phase H-bridge inverter is built with the designed power module, which verifies the correctness and practicability of the proposed method under the main power.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN322.8

【参考文献】