Low-frequency signal-demodulation-based sensorless technique for induction motor drives at low speed

被引：10

作者：

Consoli, A ^{[1
]}

Scarcella, G

Bottiglieri, G

Scelba, G

Testa, A

Triolo, DA

机构：

[1] Univ Catania, Dept Elect Elect & Syst Engn, I-695125 Catania, Italy

[2] Univ Messina, Dept Elect Elect & Syst Engn, I-3198166 Messina, Italy

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2006年 / 53卷 / 01期

关键词：

carrier frequency signals; modulation of saturation; sensorless control; zero frequency flux; zero speed control;

D O I：

10.1109/TIE.2005.862294

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The paper presents a method to compute the air-gap flux position in induction motors at very low including zero-stator frequency. A low-frequency (50 divided by 100 Hz) sinusoidal stationary signal is added to the normal stator variables to provide the machine with a suitable permanent excitation. Such an additional excitation modulates the saturation level of the magnetic core of the machine according to the angular position of the air-gap flux. As a result, a new zero-sequence stator-voltage component is generated that contains useful information about the position of the air-gap flux unaffected by load variation. Such a zero-sequence voltage can be easily employed to provide a wide bandwidth measurement of the air-gap flux position. A key feature of the proposed approach is that a low-frequency (0 divided by 5 Hz) signal is demodulated, thus avoiding any drawback featured by previous sensorless techniques operating with high-frequency signal injection.

引用

页码：207 / 215

页数：9

共 14 条

[1]

BLASCHKE F, 1996, P 31 IEEE IAS ANN M, V1, P189

[2]

Consoli A., 2003, EPE Journal, V13, P30

[3] Air-gap flux position estimation of inaccessible neutral induction machines by zero-sequence voltage [J].

Consoli, A ;

Scarcella, G ;

Testa, A ;

Lipo, TA .

ELECTRIC POWER COMPONENTS AND SYSTEMS, 2002, 30 (01) :77-88

[4] A new zero-frequency flux-position detection approach for direct-field-oriented-control drives [J].

Consoli, A ;

Scarcella, G ;

Testa, A .

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2000, 36 (03) :797-804

[5] Using multiple saliencies for the estimation of flux, position, and velocity in AC machines [J].

Degner, MW ;

Lorenz, RD .

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 1998, 34 (05) :1097-1104

[6] Sensorless field-orientation control of an induction machine by high-frequency signal injection [J].

Ha, JI ;

Sul, SK .

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 1999, 35 (01) :45-51

[7] Elimination of saturation effects in sensorless position-controlled induction motors [J].

Holtz, J ;

Pan, HW .

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2004, 40 (02) :623-631

[8] Sensorless control of induction motor drives [J].

Holtz, J .

PROCEEDINGS OF THE IEEE, 2002, 90 (08) :1359-1394

[9] TRANSDUCERLESS POSITION AND VELOCITY ESTIMATION IN INDUCTION AND SALIENT AC MACHINES [J].

JANSEN, PL ;

LORENZ, RD .

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 1995, 31 (02) :240-247

[10] Speed-sensorless induction machine control for zero speed and frequency [J].

Leppänen, VM ;

Luomi, J .

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2004, 51 (05) :1041-1047

← 1 2 →