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This paper considers the reliability of several ring generator systems. The mean-time-between-failure (MTBF) is developed for a generalized system. This equation is applied to three specific cases.
In this paper, an uninterruptible power supply (UPS) system using a current source inverter is proposed. A single phase and a three phase load commutated current source inverter suitable for this UPS system is presented. The load commutation is achieved by selecting the output filter to maintain a net leading power factor at the inverter output over the operating load range. A steady state analysis...
This paper compares the reliability of four uninterruptible power supply (UPS) configurations; single module, parallel redundant, static bypass, and static bypass redundant. Equations for calculating the MTBF's of these configurations are presented along with component reliability estimates. Effects of failure rates of associated circuitry are included. System MTBF's of 200,000 hours for redundant...
Small signal low frequency linear average model is derived for a multi-loop controlled two-winding buck/boost converter employing average techniques and the describing function method. The model reveals that a well-designed multi-loop control can provide a second-order zero adaptive to output filter parameter changes due to component tolerances, temperature changes, aging, and the effect of duty cycle...
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