Power Systems & Controls specializes in hybrid rotary uninterruptible power supply systems. A hybrid rotary uninterruptible power supply combines the best features of rotary (motor generator) and static (solid state) power systems into the ultimate solution in power protection. It consists of a basic rectifier and naturally commutated square wave inverter, which together drive a specially designed synchronous motor and generator. The motor-generator set absorbs load harmonic, produces a pure sine-wave output, and allows for true electrical isolation from utility to load.

It is a popular misconception that a hybrid rotary UPS is simply a static UPS feeding an ordinary M-G set. Power Systems & Controls’ Hybrid design operates by taking advantage of the filtering, wave shaping, and natural commutation offered by our motor generator through incorporating it into the primary power path. The resulting Hybrid Rotary UPS combines the control features of an all static UPS with the wave shaping, isolation, and reliability benefits of a motor generator. Additionally, the superior reliability of hybrid rotary significantly reduces the cost of ownership and eliminates costly power disturbances.

One of the greatest benefits of hybrid rotary topology is true Electrical Isolation. Obviously, the mission of any UPS is to isolate the critical load from the unstable conditions on the incoming utility voltage such as a high voltage lightning strike, which can damage expensive computer equipment. In hybrid rotary UPS systems, the motor and generator are distinctly separate with their own carefully grounded frames which are tied together mechanically through precision coupling. This mechanical separation is the only way to electrically separate the utility from the load.

PS&C Hybrid Rotary UPS Systems

Power Systems & Controls has a long history of developing rotary and hybrid rotary UPS systems and continue to hold the original U.S. patents. Hybrid rotary UPS systems offer many benefits, including: electrical isolation, simplified maintenance, lower overall maintenance, lower operating costs, no air conditioning requirements, longer end of life (20-30 years), and higher reliability.