TY - GEN
T1 - Arbitrary Injection based sensorless control with a defined high frequency current ripple and reduced current and sound level harmonics
AU - Laumann, Matthias
AU - Weiner, Christian
AU - Kennel, Ralph
N1 - Publisher Copyright:
©2017 IEEE.
PY - 2017/10/20
Y1 - 2017/10/20
N2 - Most Anisotropy based sensorless control schemes are using an additional voltage injection in order to create a measurable current ripple. This injection causes some unwanted side effects such as additional noise and torque oscillations, introduced by the harmonics of the current. This paper proposes an operating point dependent injection in combination with an arbitrary injection scheme in order to reduce these disturbances. It avoids, that more voltage is injected than needed during saturation, this results in reduced current and acoustic noise harmonics. The method includes an approach, how to define the injection amplitude in order to produce a measurable minimum high frequency current ripple. The method was developed with the aim to be easily implementable, without additional measurements and with less computational effort. The operating point dependent injection is verified by simulation and measurement results. For the illustration of the method a triangular shaped injection is used exemplary. The process is carried out for a reluctance synchronous machine.
AB - Most Anisotropy based sensorless control schemes are using an additional voltage injection in order to create a measurable current ripple. This injection causes some unwanted side effects such as additional noise and torque oscillations, introduced by the harmonics of the current. This paper proposes an operating point dependent injection in combination with an arbitrary injection scheme in order to reduce these disturbances. It avoids, that more voltage is injected than needed during saturation, this results in reduced current and acoustic noise harmonics. The method includes an approach, how to define the injection amplitude in order to produce a measurable minimum high frequency current ripple. The method was developed with the aim to be easily implementable, without additional measurements and with less computational effort. The operating point dependent injection is verified by simulation and measurement results. For the illustration of the method a triangular shaped injection is used exemplary. The process is carried out for a reluctance synchronous machine.
UR - http://www.scopus.com/inward/record.url?scp=85039914296&partnerID=8YFLogxK
U2 - 10.1109/SLED.2017.8078438
DO - 10.1109/SLED.2017.8078438
M3 - Conference contribution
AN - SCOPUS:85039914296
T3 - Conference Proceedings - 2017 8th International Symposium on Sensorless Control for Electrical Drives, SLED 2017
SP - 103
EP - 108
BT - Conference Proceedings - 2017 8th International Symposium on Sensorless Control for Electrical Drives, SLED 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Symposium on Sensorless Control for Electrical Drives, SLED 2017
Y2 - 18 September 2017 through 19 September 2017
ER -