Green Solutions in Mission-Critical Facilities through Industry-Leading High-Efficiency Power ElectronicsDemands for mission-critical facilities have dramatically increased in recent years in particular to support the expansion of information-related businesses1. A critical facility such as a data center requires an environmental controlled room and space to accommodate various electronics equipments as well as a high-availability power supply and protection system. It is well-known that building and running an environmentally controlled facility is costly. With the rising cost of energy and growing environmental concerns, building design and management of mission-critical applications have become even more challenging.
High level performance site infrastructure features redundant power capacity, fault tolerance, constant cooling and enough space for maintenance and future reconfiguration2. Therefore, high efficiency and size effective uninterruptible power supplies play a key role in powering these critical applications at a low cost of ownership. Recent advances in power electronics have led to a new generation of higher efficiency UPS systems with compactness and higher efficiency to meet current and future demands in terms of efficiency, greenhouse emissions, reliability, layout reconfiguration and power availability.
This white paper examines the recent technological advances in power availability solutions and points out the many benefits end-users can achieve by using cutting edge industrial electronics.
Multilevel Power Converters for Higher Efficiency and Size Effective UPS Systems
A double conversion UPS typically has three power conversion stages (converter, inverter and chopper) as shown in Figure 1. Each power converter is basically an array of semiconductors (switches). These switches are arranged in such way that their commutation enables the synthesis of the required output voltage waveform.
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