The main job of a UPS is to filter and consequently transform incoming AC power to ensure it is both stable and clean. UPS systems also supply emergency power from several batteries while awaiting a backup generator to come online. Industrial UPSs are power supply systems that are fully customized for rugged environments. They are particularly designed to safeguard the critical loads found in industrial applications. This is because these applications experience voltage transients that are because of degraded mains supply.
These transients have the potential of casing some serious damage to both the critical load and the UPS. UPS systems for industrial applications are customizable and fully flexible. They are designed particularly for active–on line installation between by-pass source, power source as well as critical load. This is at the point where regulated AC frequency and voltage is delivered by the inverter to the load while regulated DC current/ voltage is delivered by the rectifier to the DC load without interruption always.
There are 3 operation modes as follows:
i. Normal operation mode
The rectifier that has an input isolation transformer readily converts the normal input AC power into DC power for the DC loads and inverter as well as for charging the battery group.
ii. Loss of input power mode
The inverter free runs with the help of its internal oscillator in case of input power failure. The DC loads will utilize the battery for operations until the time that the low DC threshold is attained or until rectifier’s input power is restored.
iii. Bypass operation mode
A sensing circuit is provided to the inverter and this can delete short circuits, sustained overloads and transient overload. Current limit is initiated by the sensing circuit and this causes the critical load to be transferred by the static switch to the bypass line. For load security, all these activities take place without any interruption.
These UPS systems are mainly designed to satisfy the requirements of applications such as Defence, Security and Alarm equipment, Hospitals and healthcare, Railways and metro lines, Airport, airfields and avionics, Pipeline control centres, Offshore installations, Production process plants, Power- and Substations, Chemical, Petrochemical as well as Gas and Oil.
There are several benefits that are associated with the use of industrial UPS systems, the main ones include the following:
It provides load security against the failure of the mains system.
It promotes operational efficiency in the long term.
It has incredible battery efficiency.
These systems are characterized by a modular architecture.
It also provides load security against both rectifier and battery failure.
Industrial UPS systems are very compatible with the most recent energy storage technology such as lithium ion battery and small footprint super capacitors options.