摘要
逆变电源的并联对于扩大系统供电容量,提高供电系统的可靠性等具有重要的意义。在逆变器并联系统中,消除逆变器之间的环流是逆变电源并联运行的关键技术。详细分析了逆变器并联的原理,提出了一种在逆变器相位同步的情况下采用CAN现场总线消除逆变器并联系统环流的方案。该方案采用数字均流方法,从而克服了传统的模拟均流方法可靠性差、抗干扰能力弱的缺点,并在3kVA逆变器并联系统中得到了成功的运用。
The parallel operation of inverters has been proved to be not only an effective method to increase the ca-pacity of the power system,but also a good way to improve the reliability of it. This paper analyzes the principle of inver-ters parallel operation and then proposes a digital parallel current-sharing method based on CAN field bus through which we could solve circumfluence in the parallel operation of inverters. This method was successfully used in 3kVA inverter′s paral-lel operation system.The result shows that the digital method is superior to the analog one and offers higher reliability.
出处
《电力电子技术》
CSCD
北大核心
2005年第3期61-63,共3页
Power Electronics
