TY - JOUR
T1 - Converter Monitoring Unit for Retrofit of Wind Power Converters
AU - Rannestad, Bjorn
AU - Maarbjerg, Anders Eggert
AU - Frederiksen, Kristian
AU - Munk-Nielsen, Stig
AU - Gadgaard, Kristian
PY - 2018/5
Y1 - 2018/5
N2 - A converter monitoring unit (CMU), which will enable condition monitoring of wind turbine converters is presented in this paper. Reducing the cost of corrective maintenance by means of condition monitoring is a way of lowering operation and maintenance costs for wind turbine systems. The CMU must be able to detect a broad range of failure modes related to Insulated Gate Bipolar Transistor (IGBT) power modules and associated gate drives. IGBT collector-emitter on-state voltage (vce
on) and current (i
c) is sampled in the CMU and used for detection of emerging failures. A new method for compensation of unwanted inductive voltage drop in the vce
on measurement path is presented, enabling retrofitting of CMUs in existing wind turbines. Finally, experimental results obtained on a prototype CMU are presented. Experimentally the vce
on dependency to IGBT junction temperature and deterioration of gate drive voltage is investigated. The proposed method shows good detectability of both thermally related degradations of the power module and detectability of deterioration of gate drive voltage. It is also expected that the proposed method will enable detectability of other failure mechanisms.
AB - A converter monitoring unit (CMU), which will enable condition monitoring of wind turbine converters is presented in this paper. Reducing the cost of corrective maintenance by means of condition monitoring is a way of lowering operation and maintenance costs for wind turbine systems. The CMU must be able to detect a broad range of failure modes related to Insulated Gate Bipolar Transistor (IGBT) power modules and associated gate drives. IGBT collector-emitter on-state voltage (vce
on) and current (i
c) is sampled in the CMU and used for detection of emerging failures. A new method for compensation of unwanted inductive voltage drop in the vce
on measurement path is presented, enabling retrofitting of CMUs in existing wind turbines. Finally, experimental results obtained on a prototype CMU are presented. Experimentally the vce
on dependency to IGBT junction temperature and deterioration of gate drive voltage is investigated. The proposed method shows good detectability of both thermally related degradations of the power module and detectability of deterioration of gate drive voltage. It is also expected that the proposed method will enable detectability of other failure mechanisms.
KW - Condition monitoring
KW - Converters
KW - Insulated gate bipolar transistors
KW - Logic gates
KW - Monitoring
KW - Multichip modules
KW - Pulse width modulated power converters
KW - Voltage measurement
KW - Wind turbines
KW - Insulated gate bipolar transistors (IGBTs)
UR - http://www.scopus.com/inward/record.url?scp=85021836179&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2017.2716946
DO - 10.1109/TPEL.2017.2716946
M3 - Journal article
AN - SCOPUS:85021836179
SN - 0885-8993
VL - 33
SP - 4342
EP - 4351
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 5
M1 - 7953522
ER -