Five common topologies of UPS

  1. Offline topology structure: Offline UPS mainly connects devices directly to the main power source and switches to backup energy only when the main power source is interrupted. Its characteristics are low cost, high efficiency, and suitable for application scenarios with low requirements for power quality.
  2. Online topology structure: Online UPS always supplies power to devices through batteries, with the main power source used for charging. This structure can provide the highest power quality and reliability, but the cost and energy efficiency are relatively high. Online UPS is suitable for applications that require high power quality, such as servers, communication equipment, etc.
  3. Line Interactive topology structure: Line Interactive UPS is a combination of offline and online systems. The equipment is first powered by the main power source, but automatically switches to battery power in case of voltage fluctuations or interruptions. The online interactive UPS provides better voltage regulation capabilities and is suitable for applications that require high voltage stability.
  4. Delta Conversion topology structure: The winding UPS converts the AC power of the main power supply into DC power, and then converts it into AC power for equipment power supply. This structure can provide higher efficiency and power quality, but the cost is relatively high. Wire wound UPS is suitable for applications that require high power quality and efficiency.
  5. Double Conversion topology structure: The double conversion UPS converts the AC power of the main power supply into DC power, and then converts it into AC power for equipment power supply. Compared with wound UPS, dual conversion UPS is more stable in the process of energy conversion, providing higher power quality and protection effect. This structure is suitable for applications that require extremely high power quality, such as data centers, medical equipment, etc.

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