摘要
分析了以电流比较器为基础的虚拟高压低功率因数瓦特表的工作原理和电路 ,并讨论了其误差 .结果表明 ,该瓦特表具有测量精度高、低功率因数测量范围宽的特点 ,适用于大容量设备的功耗测量 .
This paper presents principles,circuit design and error analysis of a virtual reality high-voltage low-power-factor wattmeter based on current-comparator. The result shows that the CCB wattmeter has an order of magnitude improvement in accuracy, and a lower power factor measuring range. The wattmeter applies to loss measurements of large power apparatus.
出处
《宁夏大学学报（自然科学版）》
CAS
2001年第4期396-398,共3页
Journal of Ningxia University(Natural Science Edition)
