Automatic IM parameter measurement under sensorless field-orientedcontrol
Yih-Neng Lin
Chern-Lin Chen
Power Electron. Lab., Nat. Taiwan Univ., Taipei ;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Feb 1999
Volume: 46,
Issue: 1
On page(s): 111-118
ISSN: 0278-0046
References Cited: 12
CODEN: ITIED6
INSPEC Accession Number: 6169950
Digital Object Identifier: 10.1109/41.744399
Current Version Published: 2002-08-06
Abstract
A novel approach to automatic induction motor (IM) parameter
measurement under sensorless field-oriented control (FOC) is presented.
Before startup, the inverter drive automatically performs the DC test,
the no-load test and the locked-rotor test for the driven IM. The only
measured values are input current signals. No additional hardware is
required in this approach. In order to automatically measure the IM
parameters under FOC structure, the concepts of no-load test and DC test
should be modified. In addition, because the conventional locked-rotor
test requires that the rotor shaft be locked mechanically, this makes
automatic measurement impossible. In order to solve this problem, a
locked-rotor test at single-phase excitation for sensorless FOC
structure is also performed in this paper to facilitate automatic IM
parameter measurement. Finally, the test data are then computed to get
the IM parameters and the field current command for FOC. The presented
method has been tested on a 3-hp inverter-driven IM system. Its
effectiveness is illustrated by experimental recordings
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