Topic
Isolation transformer
About: Isolation transformer is a research topic. Over the lifetime, 8145 publications have been published within this topic receiving 72396 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: The proposed topology permits one to reduce the harmonic distortion in the input converter and decreases the power processed by converter switches, which can guarantee the feasibility of the system when high-power applications are considered.
Abstract: This paper proposes a reversible six-phase machine drive system. It is composed of two parallel three-phase to three-phase dc-link converters without isolation transformers. The proposed topology permits one to reduce the harmonic distortion in the input converter and decreases the power processed by converter switches. Furthermore, the proposed configuration can guarantee the feasibility of the system when high-power applications are considered. The model and the control strategy have been developed. The simulation and experimental results are presented.
27 citations
Patent•
02 Jun 1999
TL;DR: A buck derived isolated DC-DC converter includes a half or full bridge of switching devices which are asymmetrically controlled so that top and bottom switches are opened and closed at mutually exclusive times as mentioned in this paper.
Abstract: A buck derived isolated DC-DC converter includes a half or full bridge of switching devices which are asymmetrically controlled so that top and bottom switches are opened and closed at mutually exclusive times. Primary side and secondary side DC blocking capacitor(s) and a small valued inductor are placed in series with an isolation transformer. A single secondary rectification uncontrolled switch and inductor-capacitor output filter are included. Additionally a voltage clamping circuit is added across the rectifier which includes an active switch which also may be connected to a tap on the output inductor.
27 citations
Patent•
18 Aug 2006
TL;DR: In this article, a component having a core, a first multi-wire bundle having primary and secondary windings wound about the core, and a second multwire bundle with primary and Secondary windings winding about the same core are presented.
Abstract: A component having a core, a first multi-wire bundle having primary and secondary windings wound about the core and a second multi-wire bundle having primary and secondary windings wound about the same core. In one form, the first and second bundles are wound in parallel with one another in a bifilar manner about the core. The method of winding the component allows the component to handle high current, high frequency data applications. An isolation transformer and filter circuit are also shown using the transformer and/or method of winding same.
27 citations
Patent•
05 Aug 1994
TL;DR: A harmonic current filtering transformer as discussed by the authors is a transformer with a three-phase input winding and at least two wye-connected three phase output windings, each of which has an in-phase coil connected between a common neutral and vector coils for each of the other two phases.
Abstract: A harmonic current filtering transformer includes a three-phase input winding and at least two wye-connected three-phase output windings. Windings for each of the phases includes an in-phase coil connected between a common neutral and vector coils for each of the other two phases, the output windings thereby being phase shifted relative to each other by an amount which causes harmonic currents generated by a non-linear load to magnetically cancel in the transformer core. The harmonic current filtering transformer may be used as part of a harmonic cancelling power system which includes multiple linear and nonlinear loads, and protective devices, switches, filters and other components on both the input and output sides of the transformer as in a conventional power system since the harmonic cancelling transformer does not require additional secondary windings or other electrical components previously thought necessary to achieve harmonic cancellation.
27 citations
28 Oct 2013
TL;DR: In this article, the authors discuss various factors to be considered in the design and implementation of the power electronics for a hybrid distribution transformer, a voltage and/or VAr compensation device that provides enhanced control in distribution systems.
Abstract: This paper discusses various factors to be considered in the design and implementation of the power electronics for a hybrid distribution transformer. The hybrid distribution transformer is a voltage and/or VAr compensation device that provides enhanced control in distribution systems. The device comprises a fractionally rated power electronics (PE) module combined with a distribution transformer. The design and selection methodology for the PE module is detailed using qualitative and quantitative methods. Practical considerations as relates to factory acceptance tests are considered in determining the impact of the PE module connected to the transformer for testing and certification.
27 citations