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Usměrňovačové systémy DC-Měniče Střídače UPS systémy ...

Vydal: BENNING CR, s.r.o. Autor: BENNING

Strana 76 z 247

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99. >Better power factor The power factor the TRANSOTRONIC range reaches 0.c. Furthermore, the mains will loaded with apparent power, due the lagging input power factor the thyristor rectifier. However, one the disadvantages these devices the level harmonic distortion fed back the mains.s TR ANSO TRO IC IG technology for etter perform ance General remarks Ranges application The rectifier range TRANSOTRONIC designed for the secured supply power for critical loads such control and monitoring systems well data processing technology in power stations and industrial plants. ] In larger plants, devices with 220 and current outputs of several hundred amps are often used. Harmonic distortions produced the switching character­ istic the thyristors and can cause disturbances other loads connected the same mains. The output voltage change with load steps from 100 and from 100 % is only approx. (fig. 3 • Good dynamic behaviour Even when not connected battery, the TRANSOTRONIC has good dynamic behaviour. These plants require, reliable power supply independent of the public net, which most often achieved using battery- secured power supply. For the conversion of current, rectifiers with thyristor bridges work satisfactorily. Therefore only very small amount reactive power taken from the mains. 2). Power stations ransformer stations Chemical factories Offshore installations Refineries Hospitals Comparison the harmonic input current with thyristor-IGBT rectifiers thyristor 6-pulse rectifier thyristor 12-pulse rectifier TRANSOTRONIC IGBT rectifier fig. This leads the following performance improvements: >Substantially smaller harmonic distortion The harmonic distortion the mains reduced to < (fig. • Simple battery capacity testing mains feed back without the use external load . Better performance because IGBT technology BENNING’s TRANSOTRONIC rectifier range uses IGBT semi­ conductors instead thyristors. Dynamic behaviour TRANSOTRONIC rectifier 220 600 A [ 200 d. 1). The TRANSOTRONIC with sinusoidal input power ensures distortion free rectifier operation [ ] V)CD 3 03 > c lload __ step __ 100 1 __ Co, W __ ithoiit ba __ ttery - V V , \ I time [ ] lload step 100 1Co, Withoiit battery initialvalues V V I r' _ __ time < ; y \ fig