TY - GEN
T1 - A Novel Voltage Sensorless Control Technique for a Bidirectional AC/DC Converter
AU - Yip, S.C.
AU - Qiu, D.Y.
AU - Chung, Henry S. H.
AU - Hui, S.Y.R.
PY - 2001/6
Y1 - 2001/6
N2 - A novel voltage sensorless control technique for a bidirectional ac/dc converter is presented. Only a single current sensor that measures the inductor current is needed in the whole system. The sensed inductor current is used for two functions. The first one is for shaping the current waveform at the ac side and the second one is for deriving the inductor voltage by determining the rate of change of the inductor current. The ac- and dc-side voltages, which are used for ac current synchronization and dc voltage regulation, respectively, are obtained by extracting the envelopes of the derived inductor voltage. Apart from reducing the number of sensing elements, the proposed method has additional advantages of 1) providing inherent electrical isolation and reducing noise coupling between the power circuit and the controller, and 2) having wide operating range. Design criteria for the differentiator and envelope detector circuit will be described. The applicability of the proposed method is verified with the experimental results of a prototype.
AB - A novel voltage sensorless control technique for a bidirectional ac/dc converter is presented. Only a single current sensor that measures the inductor current is needed in the whole system. The sensed inductor current is used for two functions. The first one is for shaping the current waveform at the ac side and the second one is for deriving the inductor voltage by determining the rate of change of the inductor current. The ac- and dc-side voltages, which are used for ac current synchronization and dc voltage regulation, respectively, are obtained by extracting the envelopes of the derived inductor voltage. Apart from reducing the number of sensing elements, the proposed method has additional advantages of 1) providing inherent electrical isolation and reducing noise coupling between the power circuit and the controller, and 2) having wide operating range. Design criteria for the differentiator and envelope detector circuit will be described. The applicability of the proposed method is verified with the experimental results of a prototype.
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0034795051&origin=recordpage
U2 - 10.1109/PESC.2001.954399
DO - 10.1109/PESC.2001.954399
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0780370678
SN - 0780370686
VL - 4
T3 - PESC Record - IEEE Annual Power Electronics Specialists Conference
SP - 1899
EP - 1904
BT - 2001 IEEE 32nd Annual Power Electronics Specialists Conference - Conference Proceedings
T2 - 32nd Annual Power Electronics Specialists Conference (PESC 2001)
Y2 - 17 June 2001 through 21 June 2001
ER -