UPS design without inverter to power ISP servers

Abstract

Today, in order to provide continuous electricity to sensitive loads in centers such as banks, hospitals, telecommunication centers, military organizations and universities, uninterruptible power supply systems (UPS) should be used. The servers of the technology department of the mentioned centers can be considered as sensitive loads that must be continuously supplied with electricity. Many designs have been proposed for uninterruptible power supplies, all of which are based on rectifier and inverter circuits. In this article, a new method for UPS design is presented in order to provide continuous power to loads such as ISP servers, which, in addition to having proper performance, due to the removal of the inverter, the cost is also reduced compared to conventional UPS. The validity of the mentioned claim has been confirmed according to the results of the simulations in the Simulink MATLAB environment and the conducted experiments

Substitution Analytical Model for Finite Element Method to Predict Distribution of Flux density for Flux Switching Permanent Magnet with E-Core Shape of Stator at no load

“…In [42], three square-switched permanent magnet machines are proposed from the perspective of the stator tooth structure and together with each other in terms of tooth torque, induced voltage, average torque, induced voltage harmonics and with the help of finite element method and shape analysis, the pole is done, and they are compared with each other. In [43], [44], [45], [46], [47], [48], [49] the permanent magnet semi-switched machine with combined winding is investigated, where the direct current winding is placed on the pole of the rake. Its performance is checked by considering the effect of saturation and different current densities for direct current winding, and finally, the flux distribution quantities under different current densities, the connection flux with different current densities, the induced voltage under current densities different, losses under different speeds and current under short circuit are calculated with the help of finite element method.…”