MOTOR CONTROL SYSTEM

• Main Author: OGURI HIROSHI
• Format: Patent
• Language: English
• Published: 04.03.2010
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To drive a motor even if abnormality occurs with some of switching elements, in a motor control system wherein stopping of an inverse conversion part can cause accidents. SOLUTION: In the motor control system, DC power is power-converted to AC power, for outputting to a motor M, by an inverse conversion part INV wherein a plurality of serial circuits, with switching elements being provided to an upper arm and a lower arm connected in series, are connected parallel for each phase. At least two windings are provided to the motor M for each phase. The serial circuits in the inverse conversion part INV are divided into at least two blocks for each phase. At least one block of serial circuit is connected to each winding. At least two gate drive circuits 6 are provided, for controlling switching elements for each block. COPYRIGHT: (C)2010,JPO&INPIT