Power Losses Measurement Method for High Efficiency MV Oil-Insulated DC-DC Converter
Conference: PCIM Conference 2025 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/06/2025 - 05/08/2025 at Nürnberg, Germany
doi:10.30420/566541389
Proceedings: PCIM Conference 2025
Pages: 9Language: englishTyp: PDF
Authors:
Le Metayer, Pierre; Buttay, Cyril; Dworakowski, Piotr; Dujic, Drazen
Abstract:
The concept of MVDC collection network for renewable applications requires a high efficiency DC-DC converter to connect low voltage sources to the medium voltage network. The accurate measurement of low power losses is not possible with traditional electrical input-output power measurements. This paper adopts and extends a transient calorimetric method suited for the measurement on such converters. It is shown experimentally that this method can be applied to the measurement of the losses of an oil-immersed DC-DC converter. The maximum efficiency of the 83 kW, 1.2 to 6.6 kV prototype is measured at 99.16 ±0.04% (99.12…99.20%).