TY - JOUR
T1 - Impedance Circle Modeling and Dynamic Characteristics Analysis of Contactless Energy Transfer System Under Load Variations in Rotary Ultrasonic Machining
AU - Fu, Yu
AU - Wang, Aimin
AU - Wu, Shihao
N1 - Publisher Copyright:
© 1982-2012 IEEE.
PY - 2024/4/1
Y1 - 2024/4/1
N2 - In rotary ultrasonic machining, contactless energy transfer (CET) is developed to transmit energy to the transducer at the series resonant frequency or resonant frequency of the transducer. Specifically, during energy transmission, variations in working conditions such as variable axial forces will change the load of the transducer and introduce undesired dynamic effects into the CET system (CETS). In order to explore the connections between these variations and the working performance more directly and theoretically, a new theoretical model - CETS impedance circle is proposed in this article to reflect the CETS dynamic characteristics, including the CETS frequency characteristics and the relationships between CETS transfer performances at different frequencies under load variations. With the developed theoretical model, the effect of load variations on the trends of CETS impedance circle is investigated. Moreover, based on the impedance circle and its trends, the CETS frequency characteristics, the effect of primary series compensation, and a comparison of the transfer performances at the two working frequencies are theoretically studied. Finally, the CETS impedance circle theories are experimentally verified, and the experimental results are consistent with the analysis of the theoretical model.
AB - In rotary ultrasonic machining, contactless energy transfer (CET) is developed to transmit energy to the transducer at the series resonant frequency or resonant frequency of the transducer. Specifically, during energy transmission, variations in working conditions such as variable axial forces will change the load of the transducer and introduce undesired dynamic effects into the CET system (CETS). In order to explore the connections between these variations and the working performance more directly and theoretically, a new theoretical model - CETS impedance circle is proposed in this article to reflect the CETS dynamic characteristics, including the CETS frequency characteristics and the relationships between CETS transfer performances at different frequencies under load variations. With the developed theoretical model, the effect of load variations on the trends of CETS impedance circle is investigated. Moreover, based on the impedance circle and its trends, the CETS frequency characteristics, the effect of primary series compensation, and a comparison of the transfer performances at the two working frequencies are theoretically studied. Finally, the CETS impedance circle theories are experimentally verified, and the experimental results are consistent with the analysis of the theoretical model.
KW - Compensation circuit
KW - contactless energy transfer (CET)
KW - frequency characteristics
KW - impedance circle
KW - rotary ultrasonic machining (RUM)
KW - ultrasonic transducer
UR - http://www.scopus.com/inward/record.url?scp=85161024499&partnerID=8YFLogxK
U2 - 10.1109/TIE.2023.3277079
DO - 10.1109/TIE.2023.3277079
M3 - Article
AN - SCOPUS:85161024499
SN - 0278-0046
VL - 71
SP - 4069
EP - 4078
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 4
ER -