A1 Journal article (refereed), original research

Galvanic Isolation and Output LC Filter Design for the Low-Voltage DC Customer-End Inverter


Publication Details
Authors: Mattsson Aleksi, Lana Andrey, Nuutinen Pasi, Väisänen Vesa, Peltoniemi Pasi, Kaipia Tero, Silventoinen Pertti, Partanen Jarmo
Publication year: 2014
Language: English
Related Journal or Series Information: IEEE Transactions on Smart Grid
Issue number: 99
JUFO-Level of this publication: 1
Open Access: Not an Open Access publication

Abstract
In this paper the need for a better design of thegalvanic isolation and the output filter inductor in thecustomer-end inverter (CEI) of the low voltage DC (LVDC)network is discussed. The galvanic isolation can be implementedeither with a 50 Hz transformer after the CEI or with an isolatedDC-DC converter between the DC network and the CEI.However, the 50 Hz transformer solution adds a significantamount of volume and mass to the system. Based on calorimetricmeasurements conducted with the current system in which thegalvanic isolation is implemented with the former method, theminimum requirements for the isolated DC-DC converter arepresented and a comparison is carried out. For the system to becost efficient the DC-DC converter should result in reducedlifetime cost compared with the transformer solution. In theoutput filter part a design method for an amorphous core filterinductor based on minimization of the lifetime cost is presented.

Last updated on 2017-22-03 at 16:07