The Hitzinger Dynamic Rotary Diesel UPS is the perfect solution for industrial applications, providing a secure and reliable source of UPS to mitigate waste from interruption during the production cycle.
The Hitzinger DRUPS system comprises of four major components: diesel engine, generator, kinetic energy storage module and coupling choke. The kinetic energy module, generator and coupling choke work together to provide power conditioning and ride through energy for the UPS system, whilst the diesel engine provides the long-term back up for a mains failure. These systems provide extremely high availability and reliability in case of mains failure and high efficiency during stand-by operation.
Simplified Description - The kinetic energy storage module KIN consists of two rotating parts, the inner and the outer rotor. The outer rotor is equipped with a squirrel cage which rotates at 2600 rpm and runs freely on the shaft of the inner rotor.
The inner rotor equipped with a specially designed winding rotating at synchronous speed (1500 rpm) coupled via a flexible coupling to the synchronous alternator. In the event of mains failure the magnetic field of the inner rotor brakes the outer rotor and keeps the speed of the synchronous alternator constantly via electronic control unit.
Within a Diesel UPS system the coupling choke connects the input grid supply with the UPS high quality output supply. It allows large voltage differences between both AC systems by means of reactive currents for any direction, independent of the active power flow. The special design of the choke provides a high degree of de-coupling in both directions between the input and the output. The Coupling choke provides: Static and transient voltage decoupling of the input mains and the UPS bus -Harmonic filtering -Input load levelling irrespective of 100 % unbalanced output load and Input Power factor correction > 0.98 from 0 - 100 % load at nominal voltage.
In the event of input short circuit the current flow towards the grid network is limited by the choke to < 200% I nominal until the input is disconnected. During this transient the current feed back to the mains is wholly reactive, ensuring all the kinetic stored energy can be fully utilised for the critical load.