一种大功率公共直流母线功率变换器的设计与应用

Design for New Power Converter Used in High Power Common-DC-Bus

在多电机交流调速传动系统中,公共直流母线技术被广泛使用。而公共直流母线应用的核心是功率变换器的合理设计。如何提供稳定的直流电压源,同时又能把逆变器产生的再生能源回馈到电网是我们要解决的关键问题。从器件选型、散热方案和晶闸管的驱动3个方面,详细介绍了直流母线的功率变换器的实现,并且通过实验和现场应用论证了设计方案的可行性以及设备整机的可靠性。

In the adjustable speed AC system,the common-DC-bus tech is widely usecL. The common-DC- bus application is the core of the rational design of the power converter. How to provide a stable DC voltage source inverter can also generate renewable energy back to the grid is the key to solve the problem. ＂DC power converter＂ was presented in details based on those three concepts of ＂the lectotype of components, the plan of heat emission and the drive of thyristor ＂ , and demostrates the feasibility of the plan and reliability of the equipments through experiments and practical application.