High efficiency and high powerfactor are characteristic of rare earth and permanent magnetism and synchronous motor. lt is a energy saving product.
稀土永磁同步电动机具有效率高、功率因数高的特点，是一种高效节能产品。
2
The working principle and characteristic of the Boost powerfactor correction (PFC) circuit operating in critical conduction mode are investigated.
介绍了临界模式功率因数校正电路的工作原理和特点。
3
In this paper, the characteristic of new type control system of PFC (powerfactor compensator) of electric locomotive is briefly described, the test is analysed in detail.