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STUDY OF THE PRINCIPLE OF A NOVEL HYBRID DC COMPARATOR

Journal Name:

  • Istanbul University Journal of Electrical & Electronics Engineering

Publication Year:

  • 2008

Key Words:

Author Name
Abstract (2. Language): 
The traditional controllable saturation reactor (CSR) consists of single toroidal core, DC (direct current) controlled loop (including DC controlled winding and DC biasing source) and AC (alternating current) excitation loop (including excitation winding and AC source). A detection winding and secondary winding are added up to the CSR configuration and form a hybrid DC comparator. Research shows the terminal voltage of the detection winding is asymmetric waveform when the secondary winding of the comparator is open and the CSR core is stimulated both by AC and DC biased sources. Both theory analysis and experiment verify the feasibility of the differential RMS (root-mean-square) between positive and negative half waves of the terminal voltage from the detection winding fitted for the feedback variance to balance DC biasing magnetic potential and form a self-balancing comparator. The zero-flux technique that the primary ampere-turn is equal to the secondary is the function base for the comparator. The operation details of the comparator including the control characteristics both of open-loop and close loop, the satiability judgment criterion, static error property and test range are introduced. The experimental results testify to the truth of the principle of the proposed DC comparator.
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  • 1
621-632
  • English

REFERENCES

References: 

[1] A. Barili, A.Brambilla, G. Cottafava, et al.
“A simulation model for the saturable
reactor”, IEEE Transactions on Industrial
Electronics, vol: 35, no: 2, pp.301-306,
May 1988.
[2] M. MacMartin, N. Kusters. “A
self-balancing direct current comparator
for 20 000 amperes”, IEEE Transactions.
on Magnetics, vol: 1, no: 4, pp. 396-402,
Dec 1965.
[3] Li Weibo, Mao Chengxiong, Lu Jiming.
“Study of the Virtual Instrumentation
Applied to Measure Pulsed Heavy
Currents”, IEEE Transactions on
Instrumentation & Measurement, 2005,
54(1): 284-288.
[4] Mingjun Zhu, Xu, Ken, “A calibrating
device for large direct current instruments
up to 320 kiloampere-turns”, IEEE
Transactions on Instrumentation &
Measurement, vol: 47 (3), pp. 711-714,
June 1998.
[5] K. Harada, Y. Ishihara, T. Todaka. “A
novel high power factor converter using a
magnetic amplifier”, IEEE Transactions
on Magnetics, vol: 32, no: 5, pp. 5013 –
5015, Sept. 1996.
[6] E.So. “The application of the
current-comparator technique in
instrumentation and measurement
equipment for the calibration of
non-conventional instrument transformers
with non-standard rated outputs”, IEEE
Transactions on Power Delivery, vol: 7, no:
1, pp. 46-52, 1992.
[7] Li Weibo, Mao Chengxiong, Lu Jiming. A
novel fiber-optic current measurement
instrument for high-power laser source.
Journal of Electrical and Electronics
STUDY OF THE PRINCIPLE OF A NOVEL HYBRID DC COMPARATOR
Li Weibo Ma Weiming Zhao Zhihua Xu Jin Xiao Huan
632
Engineering, vol: 3, no: 2, pp.835-841,
2003.
[8] Li Weibo, Mao Chengxiong, Lu Jiming.
Some considerations of designing a high
performance Rogowski coil for pulsed
current measurement, Journal of Electrical
and Electronics Engineering, vol: 7, no: 1,
pp.7-12, 2006.
Biographies
Li Weibo received his B.S. degrees in
mechanical engineering from Sichuan
University of Science & Technology (SUCT),
Chengdu, in 1997. And he received his M.S.
degrees and P.H. degrees in Department of
Electrical Engineering from Huazhong
University of Science & Technology (HUST),
Wuhan, respectively in 2001 and 2006. He is
currently in the Naval Engineering University.
He is a member of IEEE. Now he focuses all
his attention on measurement and control
technologies.

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