Methods\ By using mercury as working medium, the flow of the single pump and the dual pump is measured under the same pressure head and the same height of the exit with the simulant direct current electromagnetic pump.
方法 通过在以水银为传输介质的模拟直流电磁泵上进行实验 ,分别测出在相同静泵高 Δp和相同出液口高度 H 下 ,双泵及单泵的流量大小 。
In order to avoid DC voltage pumping-up,a phase shift compensation approach is proposed,and the relationships among source overvoltage ratio,load power factor,phase shift angle and injection voltage provided by inverter are presented.
对一种串联有源电压质量调节器运行中直流侧存在的电压泵升现象进行了分析,并对采用移相控制技术来抑制直流电压泵升时电网过电压倍数、负载功率因数、移相角及补偿电压大小之间的关系进行了理论分析。
Then the investigation into the DC-link voltage pumping-up from the viewpoint of real power flow is conducted and a novel closed-loop phase shift control method based on the DC-link voltage is proposed.
首先对采用移相控制技术来抑制直流侧电压泵升时电网过电压倍数、负载功率因数、移相角及补偿电压大小之间的关系进行了简要理论分析,然后从能量平衡角度对直流侧电压泵升现象进行了讨论,揭示了直流侧电压变化与逆变器能量流动的关系。