Novel Reduced Switches Single-Phase to Three-Phase On-line Uninterruptible Power Supply

2011-09-10
Sharifian, Mehrnaz
Niroomand, Mehdi
This paper describes design considerations and performance analysis of a novel on-line singlephase to three-phase uninterruptible power supply (UPS) with reduced number of switches. The proposed topology uses only 5 active switches reducing the cost of the system compared to the traditional 10-switch topologies. The proposed UPS consists of a single-phase rectifier/charger, a hvo-leg/three-phase inverter connected to load, battery hank, DC link capacitor and an AC inductor. Detailed circuit operation and analysis as well as simulation results are also presented to verify its feasibility.

Suggestions

Investigation of secondary cooling design enhancements in thermally limited compact notebooks
Khan, Muhammad Azhar Ali; Uzgoren, Eray; Muhtaroglu, Ali (2017-01-01)
Thermal design enhancements in a thermally limited compact notebook system are investigated in this paper. System temperature, power, and fan speed are characterized under a range of activity levels. A finite element model is developed, and validated against measurements. Design enhancements improve cooling with minimum intrusion to the existing mechanical design. A passive secondary heat pipe in the system reduces the CPU temperature by 5 degrees C, and improves the system performance through increased CPU...
Concurrent operation of wireless power transfer based contactless slip ring and motor drive system with a single converter
Ayaz, Enes; Keysan, Ozan; Department of Electrical and Electronics Engineering (2022-9)
This thesis presents a novel approach for concurrent power transfer to wired and wireless systems using a single inverter. This proposed approach fits a cost-effective solution to wireless power transfer (WPT) systems used in contactless slip rings (CSR) applications such as sensors, radars, or wind-turbine pitch controls. In conventional systems, there are two separate converters: one is for the motor drive, and the other is for the WPT system. It is proposed that the switching harmonics of the motor drive...
A Detailed Power Loss Analysis of Modular Multilevel Converter
Erturk, Feyzullah; Hava, Ahmet Masum (2015-03-19)
This paper thoroughly examines the semiconductor power loss characteristics of modular multilevel converters (MMC). Power loss behavior is examined under different pulse width modulation (PWM) methods and operating conditions. The effects of stored energy level, circulating current control utilization, power factor and submodule voltage balancing method on power loss are studied. Furthermore, unbalanced power losses and specific semiconductor stresses within a submodule are visualized by investigating the l...
Highly Integrated 3 V Supply Electronics for Electromagnetic Energy Harvesters With Minimum 0.4 V-peak Input
Ulusan, Hasan; Zorlu, Ozge; Muhtaroglu, Ali; Külah, Haluk (2017-07-01)
This paper presents a self-powered interface enabling battery-like operation with a regulated 3 V output from ac signals as low as 0.4 V-peak, generated by electromagnetic energy harvesters under low frequency vibrations. As the first stage of the 180 nm standard CMOS circuit, harvested signal is rectified through an ac/dc doubler with active diodes powered internally by a passive ac/dc quadrupler. The voltage is boosted in the second stage through a low voltage charge pump stimulated by an on-chip ring osc...
A software for simulation and controller development for high frequency high voltage power supplies
Ertan, Hulusi Bülent; Demirel, O (2000-08-18)
This paper describes a software developed for the simulation of high voltage (up to 125 kV), high frequency power supply for radiology equipment. The main components of the power supply are an AC-DC conversion stage, a high frequency inverter feeding a resonant load. The resonant load is the impedance reflected to the inverter side of the, high voltage high frequency transformer Seeding the X-ray tube. The software has modules for each of the components of the converter mentioned above, which can be modifie...
Citation Formats
M. Sharifian and M. Niroomand, “Novel Reduced Switches Single-Phase to Three-Phase On-line Uninterruptible Power Supply,” 2011, p. 90, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65658.