SPS-AC Line

The new SPS-AC Line, the latest generation of AC technology Power Supply for PolySilicon production.

Founded in 1950 to design and manufacture High Power Converters, FRIEM continued to develop its know-how in energy conversion particularly for the electrochemical industry. Thanks to its experience, in 1984 FRIEM could start its first Power Supply for a PolySilicon CVD Reactor. Its vast knowledge in such a particular field and its capability of following the requests of continuous improvement coming from the market, drove FRIEM to develop the new SPS-AC Line, the latest generation of AC technology Power Supply for PolySilicon production. CVD Reactors No. of Rods: greater than 100.

SPS-AC Advantages

Increased Production Capacity The design of the SPS system is based on the Load Supply Independency achieved with multi-phases Transformers and independent SVV Power Controllers. This design grants the best Production continuity and capacity among all the AC Power Supply Systems. Moreover each SVV Power Controller is provided with the Re-start function: in case of a transient fault, the SVV Power Controller automatically re-starts allowing the Reactor to continue the production. Improved Harmonics and Power Factor The Harmonics and Power Factor are improved thanks to the multi-phases design and to the voltage sequence control (VSC) used in the SPS-AC. Reduced Unbalance on the MV Phases The multi-phases design, besides granting the Load Supply Independency, is able to reduce the unbalance on the MV phases from typical value of 20% down to the 5%. High Electrical Efficiency FRIEM’s AC Thyristor Technology grants the highest electrical efficiency. Compact Size Reduced number and size of cubicles, reduced space and time required for installation and start-up.