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The Derivation and Application of Design Equations for Ferroresonant Voltage Regulators and Regulated Rectifiers
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TLDR
In this article, the authors derived design equations for the most commonly used ferro- resonant regulators and regulated rectifiers and derived expressions relating the physical size of the components and the short circuit characteristic of the circuit to the output power, frequency, input power factor, and voltage levels.Abstract:
Design equations for the most commonly used ferro- resonant regulators and regulated rectifiers are derived. Expressions relating the physical size of the components and the short circuit characteristic of the circuit to the output power, frequency, input power factor, and voltage levels are developed. From these expres- sions, design equations that optimize the design are obtained and specific component values are recommended. For regulated rectifiers, the design of the filter and the effect of the filter on the design of the basic regulator are discussed. The effect of deviating from the recommended values and the effects of nonlinearities not considered in the derivations are discussed. Design examples and data are presented.read more
Citations
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Journal ArticleDOI
Modeling of a constant Voltage transformer
TL;DR: The paper describes methods to extract the winding resistances, leakage inductances, and hysteresis loops of the transformer and how to fit the latter into single-valued nonlinear functions.
Journal ArticleDOI
Analysis And Design Of A New Breed Of Constant Voltage Transformers
TL;DR: In this article, a method of analysing the performance of Constant Voltage Transformers (CVT), also known as Ferroresonant Voltage Regulators, is described using strip wound cut-cores instead of conventional stamped laminations.
Journal ArticleDOI
Models of Ferroresonant Transformers
TL;DR: In this article, a ferroresonant transformer is analyzed based on the equivalent magnetic circuit and then using magnetic field equations to predict the output voltage and current at resistive or reactive loads.
Proceedings Article
Analysis of the Two-Coil Model of the Ferroresonant Transformer with a Rectified Output in the Low-Line Heavy-Load Minimum-Frequency Condition
Abstract: Most of the previous analyses of the ferroresonant transformer have been for the unrectified-output ac-load circuit, and do not include some or all of the important stray loss mechanisms. This paper focuses on the rectified-output dc-load case and includes the stray losses. The low-line heavy-load minimum-frequency condition is the worst-case condition for supplying power to the load. The ferroresonant transformer is modeled by its two-coil equivalent circuit. Analysis is simplified by assumptions about the operation of the circuit in this worst-case condition. A time integration of the nonlinear differential equations that characterize the two-coil model determines the steady-state dc and rms circuit voltages and currents as a function of the circuit component values. The general operating characteristics of the transformer are determined by observing the variation of the circuit voltages and currents as the circuit component values are varied. Using that technique, it is possible to specify which component values yield a design in which the transformer winding currents are at a minimum and the input power factor and conversion efficiency are at a maximum.
Proceedings ArticleDOI
Fast acting linear AC voltage regulator for consumer applications: Implementation options
TL;DR: While developing a 2kVA commercial prototype, the authors were able to come-up with two cost-saving design options by using two smaller low-cost transformers combined in series and a multi-winding transformer with two primaries combined in a novel topology.
References
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Journal ArticleDOI
A new approach in the analysis and design of a ferroresonant transformer
TL;DR: In this article, an analytical basis for the design of a normal ferroresonant transformer without any control winding is developed, and piecewise linear approximations are assumed for the magnetization curve of the material.