Certified Data Centre Professional (CDCP) 2025 – 400 Free Practice Questions to Pass the Exam

The preferred UPS technology for quality and reliability of output electricity during power outages is the pure online double conversion UPS with IGBT rectifier. This technology ensures that there is a continuous and stable output regardless of the input conditions.

In a pure online double conversion UPS, the incoming AC power is first rectified to DC and then inverted back to AC for output. This process continuously cleans and conditions the power, providing protection against a wide range of issues such as voltage fluctuations, sags, spikes, and complete power outages. The use of an IGBT (Insulated Gate Bipolar Transistor) rectifier adds further efficiency and improves reliability. IGBTs can handle higher voltages and currents, reducing losses and enhancing the overall performance of the UPS.

Other technologies mentioned may offer benefits, but none provide the same level of power quality and system reliability. While delta conversion UPS can be efficient and reduce energy losses, it does not deliver the same level of output stability under all conditions. High-frequency designs in UPS systems can indeed offer certain advantages, but they may also face more challenges regarding electromagnetic interference and thermal management. The primary distinction of the pure online double conversion with IGBT rectifier lies in its comprehensive protection and consistent output quality during various power disturbances.