TY - GEN
T1 - Investigation of common mode current related dc-bus overvoltage in multiple converter systems
AU - He, Jiangbiao
AU - Vrankovic, Zoran
AU - Ozimek, Patrick E.
AU - Winterhalter, Craig
PY - 2016/5/10
Y1 - 2016/5/10
N2 - Active front end (AFE) converters have been extensively used in industrial motor-drive systems due to their energy regenerative capability and low harmonic distortions. However, the Pulse Width Modulation (PWM) switching operation in AFE converters generates higher common-mode voltage than their non-regenerative diode front-end (DFE) counterparts. Such significant common-mode voltage can be converted to common-mode current through common-mode capacitance in the system. This large common-mode current can cause overvoltage of the dc-bus of a DFE converter system where both AFE and DFE converter systems share the same ac source. This paper investigates such overvoltage phenomena occurring in a DFE dc-bus in a multiple converter system. Mechanism of such dc-bus overvoltage will be explained, and both simulation as well as experimental results are presented to confirm the theoretical analysis. Moreover, a dc-bus clamping circuit is recommended to clamp the DFE dc-bus voltage, thus any overvoltage that could trip the DFE drive can be avoided.
AB - Active front end (AFE) converters have been extensively used in industrial motor-drive systems due to their energy regenerative capability and low harmonic distortions. However, the Pulse Width Modulation (PWM) switching operation in AFE converters generates higher common-mode voltage than their non-regenerative diode front-end (DFE) counterparts. Such significant common-mode voltage can be converted to common-mode current through common-mode capacitance in the system. This large common-mode current can cause overvoltage of the dc-bus of a DFE converter system where both AFE and DFE converter systems share the same ac source. This paper investigates such overvoltage phenomena occurring in a DFE dc-bus in a multiple converter system. Mechanism of such dc-bus overvoltage will be explained, and both simulation as well as experimental results are presented to confirm the theoretical analysis. Moreover, a dc-bus clamping circuit is recommended to clamp the DFE dc-bus voltage, thus any overvoltage that could trip the DFE drive can be avoided.
KW - active front end converter
KW - common-mode current
KW - multiple converter systems
KW - Overvoltage
UR - http://www.scopus.com/inward/record.url?scp=84973607375&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84973607375&partnerID=8YFLogxK
U2 - 10.1109/APEC.2016.7468005
DO - 10.1109/APEC.2016.7468005
M3 - Conference contribution
AN - SCOPUS:84973607375
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1084
EP - 1089
BT - 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016
T2 - 31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016
Y2 - 20 March 2016 through 24 March 2016
ER -