Double conversion UPS modules provide uninterrupted power to critical loads. They do this by filtering and converting incoming utility power to DC power. They then convert the DC power to a perfect AC output from the inverter. The inverter is also supported by a DC source that may include batteries or flywheels. Through this process, a true online double-conversion UPS protects the critical load from any transient or voltage anomaly including surges, sags, swells and line drops.
Line interactive UPS modules are directly connected to the incoming AC power supply. Some have the capability of running in double conversion but are normally operated via a secondary power path. This path provides unregulated power to the critical load and only interacts with the utility in the event it exceeds specified values. They run on utility power until the UPS senses a problem and switches to an alternate power source, typically battery or flywheel. The structure of a line interactive vs true online double conversion UPS leaves your site vulnerable to voltage transients and harmonic issues, and only provides a less than 0.3% efficiency gain over a double conversion Silicon Carbide based UPS module.
The line interactive UPS also tends to call upon the batteries more frequently than double conversion UPS modules, shortening the battery life and leading to costly battery change outs. If reliability is key, then double conversion is the best choice for protecting critical loads.
In a true online double-conversion UPS, the inverter is always on, supplying a clean, reliable power supply essential to industries requiring uninterrupted uptime. Whether you operate a data center, hospital, communications network, manufacturing facility, or just rely heavily on access to the grid, a double conversion UPS will provide clean, uniform power to your equipment.
With the double conversion process smoothing out raw power fluctuations from brownouts, line noise, voltage transients and power outages, you’ll be less susceptible to downtime events that could cost millions.
Online double conversion UPS systems are the preferred topology for mission critical applications because they lower the risk of electrical load loss. Their reliability and efficiency as well as increased Power Usage Effectiveness (PUE) increase their ROI. The SUMMIT Series from Mitsubishi Electric is the most efficient double-online conversion UPS on the market. When power fails, the SUMMIT converts and conditions the utility supply so the power that reaches your equipment is even and consistent.
Contact us to learn more about double-online conversion UPS and how the SUMMIT delivers ultra-high efficiency in a small footprint.