TY - JOUR
T1 - Design of a high power, resonant converter for DC wind turbines
AU - Dincan, Catalin Gabriel
AU - Kjær, Philip Carne
AU - Chen, Yu-Hsing
AU - Munk-Nielsen, Stig
AU - Bak, Claus Leth
AU - Macia , Eduard Sarra
AU - Vaisambhayana, Sriram
PY - 2019/7
Y1 - 2019/7
N2 - This paper presents a design procedure and loss estimation for a high power, medium voltage series resonant converter (entitled SRC#), intended for application in megawatt medium-voltage DC wind turbines. The converter is operated with a novel method of operation, entitled pulse removal technique, characterized by variable frequency and phase shift modulation, below the resonant point of the LC tank. A step by step design procedure is proposed and circuit component ratings and efficiency are compared for two variants. The new method of operation reduces transformer size to below 50% while losses are kept below 1.5% from zero to nominal power, due to soft-switching characteristics. An experimental setup, rated for 10 kW and 5 kV output was assembled to extract losses and validate the semiconductor loss model.
AB - This paper presents a design procedure and loss estimation for a high power, medium voltage series resonant converter (entitled SRC#), intended for application in megawatt medium-voltage DC wind turbines. The converter is operated with a novel method of operation, entitled pulse removal technique, characterized by variable frequency and phase shift modulation, below the resonant point of the LC tank. A step by step design procedure is proposed and circuit component ratings and efficiency are compared for two variants. The new method of operation reduces transformer size to below 50% while losses are kept below 1.5% from zero to nominal power, due to soft-switching characteristics. An experimental setup, rated for 10 kW and 5 kV output was assembled to extract losses and validate the semiconductor loss model.
KW - Medium-frequency transformer
KW - Medium-voltage direct current (MVdc)
KW - Offshore wind farm
KW - Series resonant circuit (SRC)
KW - Sub-resonant mode
UR - http://www.scopus.com/inward/record.url?scp=85055021384&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2018.2876320
DO - 10.1109/TPEL.2018.2876320
M3 - Journal article
SN - 0885-8993
VL - 34
SP - 6136
EP - 6154
JO - I E E E Transactions on Power Electronics
JF - I E E E Transactions on Power Electronics
IS - 7
M1 - 8493299
ER -