Higher Phase Order
Higher phase numbers than three have been used. A common practice for rectifier installations and in HVDC converters is to provide six phases, with 60 degree phase spacing, to reduce harmonic generation in the AC supply system and to provide smoother direct current. Experimental high-phase-order transmission lines have been built with up to 12 phases. These allow application of Extra High Voltage (EHV) design rules at lower voltages and would permit increased power transfer in the same transmission line corridor width.
Read more about this topic: Polyphase System
Famous quotes containing the words higher, phase and/or order:
“Every man wants a woman to appeal to his better side, his nobler instincts and his higher nature—and another woman to help him forget them.”
—Helen Rowland (1875–1950)
“The Indians feel that each stage is crucial and that the child should be allowed to dwell in each for the appropriate period of time so that every aspect of his being can evolve, just as a plant evolves in the proper time and sequence of the seasons. Otherwise, the child never has a chance to master himself in any one phase of his life.”
—Alan Quetone (20th century)
“I thought that the chief thing to be done in order to equal boys was to be learned and courageous. So I decided to study Greek and learn to manage a horse.”
—Elizabeth Cady Stanton (1815–1902)