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Title:
POSITION SENSORLESS CONTROLLER OF PERMANENT MAGNETIC MOTOR
Document Type and Number:
Japanese Patent JP2009142116
Kind Code:
A
Abstract:

To achieve stable operation without stepping out even in a low-speed rotation region even when a setting error (R-R*) occurs between a resistance value R obtained by adding a winding resistance value of a motor and a wiring resistance value between an inverter (power converter) and the motor, and R* set in a control system (vector operation, axis error estimation).

In the estimation operation of an axial error, without using the setting value of a resistor, a d-axis voltage command value is added to a multiplication value of three signal values such as a q-axis current detection value or current command value, an inductance value and a speed estimation value, and the resulting value is divided by a multiplication value of a speed demand value r* and an induced voltage constant Ke*, or an arctangent operation is performed on that value.


Inventors:
TOBARI KAZUAKI
AOYANAGI SHIGEHISA
Application Number:
JP2007317827A
Publication Date:
June 25, 2009
Filing Date:
December 10, 2007
Export Citation:
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Assignee:
HITACHI LTD
HITACHI IND EQUIPMENT SYS
HITACHI CAR ENG CO LTD
International Classes:
H02P6/18; H02P6/06; H02P6/08; H02P6/182; H02P6/28; H02P21/00; H02P21/18; H02P21/22; H02P21/24; H02P23/16; H02P23/18; H02P27/04; H02P27/06
Domestic Patent References:
JP2006087152A2006-03-30
JP2001251889A2001-09-14
JP2001268974A2001-09-28
JP2008167566A2008-07-17
JP2006087152A2006-03-30
JP2001251889A2001-09-14
JP2001268974A2001-09-28
JP2008167566A2008-07-17
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda