TY - GEN
T1 - Contact bounce elimination by means of a sensorless closed-loop current controller in DC core contactors
AU - Espinosa, A. G.
AU - Riba, J. R.
AU - Cusidó, J.
AU - Ortega, J. A.
AU - Romeral, L.
PY - 2008
Y1 - 2008
N2 - The undesirable phenomenon of the contact bounce causes severe erosion of the contacts and, as a consequence, their electrical life and reliability are greatly reduced. On the other hand, the bounce of the armature can provoke re-opening of the contacts, even when they have already closed. This paper deals with the elimination of the bounce in both, contacts and armature, of a commercial DC core contactor. This is achieved by means of a current closed-loop controller, which only uses as input the current and voltage of the magnetizing coil of the contactor. The logic control has been implemented in a low cost microcontroller. Moreover, the board control can be fed by either DC or AC, and either in 50 Hz or 60 Hz so as to extend its applicability. A set of data is obtained from the measurement of the position and velocity of the movable parts for different operating voltages, so that the dynamic behavior of the contactor is discussed.
AB - The undesirable phenomenon of the contact bounce causes severe erosion of the contacts and, as a consequence, their electrical life and reliability are greatly reduced. On the other hand, the bounce of the armature can provoke re-opening of the contacts, even when they have already closed. This paper deals with the elimination of the bounce in both, contacts and armature, of a commercial DC core contactor. This is achieved by means of a current closed-loop controller, which only uses as input the current and voltage of the magnetizing coil of the contactor. The logic control has been implemented in a low cost microcontroller. Moreover, the board control can be fed by either DC or AC, and either in 50 Hz or 60 Hz so as to extend its applicability. A set of data is obtained from the measurement of the position and velocity of the movable parts for different operating voltages, so that the dynamic behavior of the contactor is discussed.
KW - Contactors, Contacts, Fuzzy control, Closed loop control
UR - https://www.scopus.com/pages/publications/67249139237
U2 - 10.1109/HOLM.2008.ECP.32
DO - 10.1109/HOLM.2008.ECP.32
M3 - Conference contribution
AN - SCOPUS:67249139237
SN - 9781424419029
T3 - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
SP - 117
EP - 124
BT - 2008 Proceedings of the 54th IEEE Holm Conference on Electrical Contacts, HOLM 2008
T2 - 54th IEEE Holm Conference on Electrical Contacts, HOLM 2008
Y2 - 27 October 2008 through 29 October 2008
ER -