THREE-PHASE AC MOTOR CONTROL DEVICE

申请公布号：JP2003164185(A)

申请号：JP20010360463

申请日期：2001.11.27

申请公布日期：2003.06.06

申请人：

DENSO CORP

发明人：HAYASHI YOSHITAKA

分类号：H02P6/12;H02P6/08;H02P21/00;H02P29/02

主分类号：H02P6/12

摘要：<P>PROBLEM TO BE SOLVED: To provide a three-phase AC motor control device which obtains a favorable overcurrent and overheat protection while suppressing a burden increase in a data processing circuit. <P>SOLUTION: A motor protection part 3 is provided to protect a three-phase AC motor 1 or the motor control part 2 based on the square value of a q-axis current iq. With such a constitution, data process quantity, that is, the calculation burden can be significantly reduced as compared with similar conventional overcurrent protection control using a three-phase current iU, iV and iW and overheating protection control, and high-speed overcurrent protection and overheat protection can be obtained at a low cost. <P>COPYRIGHT: (C)2003,JPO

Method and apparatus for joining thermoplastic parts

Vertical cavity surface emitting lasers with electrically conducting mirrors

Interlace printing process

Method of and apparatus for producing labels

Static electric discharge apparatus

CARBAMOYL CARBOXYLIC ACID AMIDES, PROCESS FOR PRODUCING THEM AND THEIR USE AS FUNGICIDES

LOCAL HEAT TREATMENT DEVICE AND CORRESPONDING TREATMENT METHOD

OXIDATION-STABILIZED HYDROCARBON LIQUID BEARINGS FOR LUBRICATED DISK DRIVES

AUTOMATIC SEGMENTATION AND SKINLINE DETECTION IN DIGITAL MAMMOGRAMS

MOTION ESTIMATION

PROCESS FOR PRODUCING L-LYSINE

OLEFIN ISOMERISATION METHOD

CELLULOSE SURFACE MATERIAL ADHERED TO A PANEL

METHOD FOR MAKING CORNFLAKES

METHOD AND DEVICE FOR WELDING AT LEAST METAL PARTS

SYSTEM FOR ANTENNA SUPERVISING

DEVICE FOR THE SUSPENDED GUIDANCE OF SHEETS OR WEBS

PROCESS FOR MAKING MONOACETALS OF HYDROQUINONE

EXTERNALLY NON-CONDUCTIVE HOSE ASSEMBLY AND METHOD FOR PREPARING SUCH AN ASSEMBLY

METHOD FOR TRANSMITTING CALLS OF DIFFERENT PRIORITIES IN A CELLULAR NETWORK