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In particular, the less advanced ester-cooled inverters with GTO thyristors and the also ester-cooled main transformer of the DBAG Class 145 was derived from those of the DBAG Class 101, and the bogie design was modified to fit into ABB's Flexicoil family, with wheelbase increased to 2,650 mm (104.3 in).
ABB Group [6] is a Swedish-Swiss [7] [8] [9] multinational electrical engineering corporation. Incorporated in Switzerland as ABB Ltd., and headquartered in Zurich, [1] it is dual-listed on the SIX Swiss Exchange in Zurich and the Nasdaq Nordic exchange in Stockholm, Sweden, in addition to OTC Markets Group's pink sheets in the United States. [10]
Name Converter station 1 Converter station 2 Total Length (Cable/Pole) (km) Nominal Voltage (kV) Power (MW) Year Type Remarks Ref; HVDC Inter-Island 1: New Zealand - Benmore New Zealand - Haywards
Inverters that target commercial applications are available for 208, 240, 277, 400, 480 or 600 VAC and may also produce three phase power. Peak efficiency: The peak efficiency represents the highest efficiency that the inverter can achieve. Most grid-tie inverters on the market as of July 2009 have peak efficiencies of over 94%, some as high as ...
ABB's concept included a version of its Flexifloat high-speed bogie family with a wheelbase of 2,650 mm (104.3 in); and biodegradable ester cooled inverters with GTO thyristors and an also ester cooled main transformer, [12] which can be considered the origin of the inverters and transformer of the first generation of TRAXX locomotives.
A power inverter, inverter, or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). [1] The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC. [2]
Zigzag transformers are often required by utilities when connecting three-phase inverters (usually for renewable energy) to the grid to provide a stable neutral voltage and prevent excessive phase-to-ground voltages. This also protects the switching devices inside the inverters, which are usually insulated-gate bipolar transistors (IGBTs). [8]
Two partially-redundant auxiliary inverters are incorporated into the two main converter units. [ 45 ] [ 50 ] Normally, one provides a 3 phase , 480 V 60 Hz 1100 kVA supply for head end power, while the other provides several 3 phase variable voltage, variable frequency supplies (up to 480 V 60 Hz) for the traction motor fans, transformer fans ...
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