Several switching-converter topologies exist for power converters that operate from the ac mains and must maintain a power factor of 0.9 or better. One topology is a boost converter with a control ...

2 October 2008 – Following successful final acceptance testing at the Siemens transformer factory in Nuremberg, the world’s first 800kV transformer for extra-high-voltage DC transmission systems (HVCD ...

The FINANCIAL — Siemens Energy together with local partners is to deliver ten extra-high voltage converter transformers, five of them rated at 800 kilovolts, as well as 6-inch thyristor valve ...

Piezoelectric transformers and power converters represent a frontier in power electronics, harnessing the direct electromechanical coupling of piezoelectric materials to transform electrical energy ...

A new type of DC-DC converter based on Hybrid-switching Method™ and a novel Hybrid Transformer™ enables a high step-down voltage conversion and provides a regulated output voltage of 1V from a 48V ...

All isolated DC-DC power converters include an input filter, output filter, transformer, primary-side switch(s), secondary-side rectification and a controller. The controller can be referenced to ...

Following successful final acceptance testing at the Siemens transformer factory in Nuremberg, the world’s first 800-kV transformer for extra-high-voltage DC transmission systems HVDC is ready for ...