The low voltage impulse method, frequency response analysis method and short-circuit reactance method, which can be used to measure and diagnose the deformation of power transformer winding, are introduced in the paper. 目前,监测变压器绕组变形的方法主要有低压脉冲分析法(LVI),频率响应分析法(FRA)和阻抗分析法。
The experimental results show that the advantage of the double closed loop switching power supply lies in rapid current limiting characteristics, low power of the high frequency transformer and power switching transistor, good rapidity and stability of the dynamic response. 实验结果表明:该系统具有快速限流特性,使高频变压器功耗和开关管功耗下降,系统动态响应的快速性和稳定性较好。
The circuit structure which can transfer one unregulated sinusoidal voltage with high THD into another regulated constant frequency sinusoidal voltage with low THD is constituted of input cycloconverter, high frequency storage transformer, output cycloconverter, input and output filter. 该电路结构由输入周波变换器、高频储能式变压器、输出周波变换器以及输入、输出滤波器构成能够将一种不稳定劣质的正弦交流电变换成另一种同频率稳定的优质正弦交流电压。
There are several key techniques by which we carry out the high frequency of the DC-DC converter. They are high frequency and low loss ferrite technique, design-optimization of the high frequency transformer and circuit technique, and install of DC-DC converter technique. 当前实现开关电源高频化这一目标的关键技术,有采用铁氧体材料研制DC-DC变换器技术,高频变压器的优化设计,电路的优化设计,高频DC-DC变换器的制作与安装等技术。
Research on the Transfer Technique of Low Frequency Power with a High Frequency Transformer 高频变压器传递低频电功率的研究
The system includes screw compressor, piston compressor, programmable logic controller, high voltage soft starter, low voltage frequency transformer, sensor and field bus and so on. 该系统主要由螺杆式空气压缩机、活塞式空气压缩机、可编程控制器、高压软起动器、低压变频器、传感器、工业总线等先进设备组成。