Wireless UPS Paralleling

Powerware, Raleigh, N.C., offers Powerware Hot Sync, a patented paralleling technology that is said to eliminate system-level single-point-of-failure, enabling UPS modules to work in parallel and complete synchronization, for both redundant and capacity systems. The system features two identical modules arranged in a parallel redundant configuration and a parallel tie cabinet connecting the mod...

06/01/2002


Powerware , Raleigh, N.C., offers Powerware Hot Sync, a patented paralleling technology that is said to eliminate system-level single-point-of-failure, enabling UPS modules to work in parallel and complete synchronization, for both redundant and capacity systems. The system features two identical modules arranged in a parallel redundant configuration and a parallel tie cabinet connecting the modules to the critical bus. A common bypass input source allows the modules to synchronize their outputs, even when one or both of the parallel cabinet MOBs are open for maintenance.

The significance of this technology is that it overcomes the primary conundrum that has faced power technology engineers: how to parallel UPS modules to provide N+1, N+2 or higher redundancy without introducing a single-point-of-failure. By eliminating the communication wires between the UPS modules, and employing an algorithm by which each UPS constantly checks its own output for any variation on the critical bus, each UPS operates independently, but in complete synchronization with the other UPS in the system. The result of this operation is that the UPS modules automatically share the critical load, and can selectively trip and remove themselves from the critical bus if inverter failure or some other critical event occurs.

From Pure Power, Summer 2002.





Product of the Year
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
40 Under Forty: Get Recognized
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
MEP Giants Program
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
October 2018
Approaches to building engineering, 2018 Commissioning Giants, integrated project delivery, improving construction efficiency, an IPD primer, collaborative projects, NFPA 13 sprinkler systems.
September 2018
Power boiler control, Product of the Year, power generation,and integration and interoperability
August 2018
MEP Giants, lighting designs, circuit protection, ventilation systems, and more
Data Centers: Impacts of Climate and Cooling Technology
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
Safety First: Arc Flash 101
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
Critical Power: Hospital Electrical Systems
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
Data Center Design
Data centers, data closets, edge and cloud computing, co-location facilities, and similar topics are among the fastest-changing in the industry.
click me