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correcting contd
The two types of power factor correction involve passive and active processes. A passive system is a basic LC filter designed to correct the average known phase offset. However, this system cannot correct for phase shifts other than the fixed values. In contrast, the active system adjusts for variations in phase shift due to a variety of conditions including temperature, current and voltage changes. 600 V is the ideal voltage for rectifiers involved in the active PFC process. The faster the reverse recovery speed of the active device the more efficient the corrective process will be. With smaller electronics benefiting from this process, smaller components are required.
PTM Published on: 2014-04-09