Open AccessDesign of online uninterruptible power supply with AC output
Author(s) -
Ganlin Jiang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1754/1/012010
Subject(s) - uninterruptible power supply , ac adapter , electrical engineering , inverter , power supply rejection ratio , power (physics) , rectifier (neural networks) , engineering , capacitive power supply , switched mode power supply , power factor , battery (electricity) , grid tie inverter , voltage , controller (irrigation) , switched mode power supply applications , constant power circuit , computer science , maximum power point tracking , physics , stochastic neural network , quantum mechanics , machine learning , recurrent neural network , artificial neural network , agronomy , biology
This paper shows the design of an on-line uninterruptible power supply with STM32 as the main controller. It contains rechargeable batteries as the energy storage device and uses inverter technology as the core which can make 29V∼42V AC input to 30V AC RMS output. The system uses STM32 as the control core, it is divided into main controller, autotransformer module, rectifier bridge module, PFC module, inverter module, booster module, battery pack, current and voltage detection module. When the utility power is connected, it supplies power to the inverter module and if it is disconnected, the main control terminal allows the battery to supply power to the inverter module in time, thereby realizing online uninterrupted power supply. Experimental results show that this system can supply power to the load without interruption, and has a good load regulation rate and voltage regulation rate.