Topic
Isolation transformer
About: Isolation transformer is a research topic. Over the lifetime, 8145 publications have been published within this topic receiving 72396 citations.
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TL;DR: In this paper, a 35kVA medium frequency transformer with nanocrystalline core material is designed, and a three-dimensional model of the transformer is created with finite element analysis software, and then co-simulations of this electromagnetic transformer model with a power electronics converter circuit are performed for practical operation conditions.
21 citations
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20 Apr 1999TL;DR: In this paper, a small-sized heat resistant high voltage transformer and an ignition transformer using a casting resin and an inorganic filler are provided and used to produce an output voltage of 10-35 kV.
Abstract: A small-sized heat resisting high voltage transformer and an ignition transformer using the high voltage transformer are provided and utilize both a heat resistant casting resin and a bobbin, which contain an inorganic filler. The high voltage transformer is capable of producing an output voltage of 10-35 kV and comprises a primary coil, a secondary coil, and a magnetic core, wherein a casting resin is injected into the coil part and subsequently cured. The casting resin and bobbin material used for making the coils have heat distortion temperature of at least 130° C., and contain an inorganic filler. The surface of the bobbin may be pretreated. Thereby, adhesion between a bobbin and a casting resin is enhanced to ensure operating properly under the sever heat cycle condition and provide a small-sized heat resistant high voltage transformer.
21 citations
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12 Nov 2003TL;DR: A power converter for operating with an alternate current power source, including a storage capacitive means and a transformer, is discussed in this paper, where the transformer is adapted for power factor correction.
Abstract: A power converter for operating with an alternate current power source, including a storage capacitive means and a transformer, said storage capacitive means being adapted for power factor correction, said transformer including an input for connecting to an alternating current power source and at least a first output and a second output respectively for connecting to said storage capacitive means and the load, said transformer including input windings, first output windings and second output windings which are respectively connected to said input, said first and second outputs wherein said transformer and said storage capacitive means being adapted that the voltage across said storage capacitive means being related to the voltage of said first output of said transformer.
21 citations
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21 Jun 2010TL;DR: In this paper, the flat transformer is integrated into an LLC resonant converter for the PDP TV to reduce the transformer temperature inside of the transformer to 71oC and an overall efficiency of 96.6% was obtained.
Abstract: Low-profile, high efficiency power supply is today's industry trend for Plasma Display Panel (PDP) application system. Transformer is the major challenge and bottleneck for achieving low-profile, high power density converter. Generally, it is necessary for low-profile converter to operate it at high switching frequency. However, it is very difficult to design converter using flat magnetic component because flat transformer temperature becomes high at high switching frequency. In this paper, the design and analysis of flat transformer in LLC resonant converter for the PDP TV is proposed to reduce temperature of the transformer. In this proposed converter, flat transformer is integrated into advanced power conversion application systems. Low-profile power module of profile of about 14mm is achieved. Temperature inside of transformer repressed to 71oC and an overall efficiency of about 96.6% was obtained.
21 citations
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01 Nov 2013
TL;DR: In this work, the interaction of the solid state transformer with a distribution system is analyzed under different operating conditions and bidirectional active power flow, full reactive power control, low-voltage side current unbalance management and high- voltage side low- voltsage ride-through are achieved with the proposed control approach.
Abstract: The solid state transformer is an emerging technology which aims at replacing the conventional low-frequency power transformer by means of a high-frequency transformer driven by a proper AC/AC power electronics conversion system, at both transformer sides. In comparison with the conventional power transformer, the solid state transformer provides extended and enhanced operating capabilities that can be achieved with an appropriate controller design for the power electronics converters. In this work, the interaction of the solid state transformer with a distribution system is analyzed under different operating conditions. Bidirectional active power flow, full reactive power control, low-voltage side current unbalance management and high-voltage side low-voltage ride-through are achieved with the proposed control approach.
21 citations