Diesel rotary uninterruptible power systems
Diesel rotary uninterruptible power systems

Diesel-rotary uninterruptible power systems

The diesel-rotary uninterruptible power system, fixed on a single frame, consists of a diesel engine, an alternating current generator and a rotary storage of kinetic energy. The diesel-rotary uninterruptible power system does not allow interruptions in supplying consumers with power when transfer to the backup power supply occurs (without breaking the sine wave). Uninterruptable electric power supply is provided by electric power generated by a diesel generator applying existing fuel reserve.

Applying high-speed automation control of diesel generator and kinetic drive operating allows to maintain high quality electrical power performance at the he grid gets failures. Packaged diesel-rotary uninterruptible power systems supplied by PiterEnergoMash allow to provide consumers with uninterruptible electric power supply maintaining 100% of the guaranteed grid capacity according to All-Union State Standard 13109-97. The power of diesel-rotary uninterruptible power system ranges from 500 kVA to 3000 kVA, with voltage output of 0.4 kV and 10 kV. PiterEnergoMash is an recognized partner of Hitec Power Protection and the only Russian manufacturer and supplier of diesel-rotary uninterruptible power system with voltage output of 10 kV.PiterEnergoMash and Dutch company Hitec Power Protection, the global leader and the pioneer in technology of diesel-rotary uninterruptible power systems, have signed an exclusive cooperation agreement.

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Normal operating mode of diesel-rotary uninterruptible power system is filtering of a grid. While the diesel engine is in a hot standby state, and the generator operating as a motor is rotated by grid power.

The shaft generator remains in rigid attachment to the shaft of the kinetic storage which is always in operating state. In all modes, except for maintenance, shafts of a generator and an outer storage rotor are rotating at a speed of 1500 r/min. At the same time the internal rotor of a storage accelerates to 4500 r/min. thereby the rotational kinetic energy is accumulating.

Accumulated kinetic energy reserve is sufficient to maintain the rotation of the generator while the diesel is started. The diesel engine gets connected to a kinetic storage through an overrunning clutch, closing at alignment of angular velocity of storage and generator shafts. Opening occurs at lowering of rotation rate of an engine shaft with respect to a kinetic storage.

In case of brief grid power failure the motor-generator starts to operate as a generator, and through the transfer of storage kinetic energy from the storage to a generator shaft electric power generating occurs without deterioration of grid quality. The diesel engine switches on only on command of the operator or automatically in 2 seconds after a grid electric power failure with diesel-rotary uninterruptible power system transferring into to diesel generation mode. Accordingly, during the long-term grid loss consumers are power through a generator by the operating diesel engine.

Diesel-rotary uninterruptible power systems allow to provide consumers with uninterruptible electric power supply maintaining 100% of the guaranteed grid capacity according to All-Union State Standard 13109-97.