中文摘要：

基于光纤以太网通信设计了大功率整流系统能效在线监测系统,并提出了相应的多通道并行远程校准算法。监测系统由监测终端层、光纤以太网通信层、主站监测层3个部分构成,可以通过前置机软件设定,灵活地实现多通道在线校准功能和正常测量功能的切换。对监测系统的通道采样延时进行测试,结果表明通道1与其他通道之间的延时为16~22 ns,符合同步性能要求。实验验证结果表明,经所提算法校准后的测量相对误差范围由0.7%~1.3%降至0.1%~0.4%。工程实例验证了所提非线性自校准算法的精确性及实用性,设计的能效监测系统可以有效实现工业整流系统各供电装备与系统的能效测量。

英文摘要：

An online energy-efficiency monitoring system is designed based on the fiber optic Ethernet communication and a multi-channel parallel remote calibration algorithm is proposed accordingly. The designed system has three parts ：monitoring terminal layer,fiber optic Ethernet communication layer and master station monitoring layer. The functional changeover between online multi-channel calibration and normal measuring is realized flexibly by the software setting of front-end proeessor. Test results show that its sampling delay between channel no.1 and other channel is 16-22 ns,meeting the requirement of synchronization. Experimental results show that ,with the proposed calibration algorithm ,the range of relative measuring error is reduced from 0.7%-1.3% to 0.1%-0.4%. Engineering applications validate that, the proposed nonlinear self-calibration algorithm is precise and practical,and the designed system can effectively monitor the energy-efficiency of the power-supply devices and subsystems of industrial rectifier system.