CONTROL METHOD FOR PWM CONVERTER

• Main Authors: KINOSHITA SHIGENORI, MOROHOSHI YUKINOBU, YOSHIKAWA HARUKI, INOUE RYOJI
• Format: Patent
• Language: English
• Published: 20.02.1996
• Edition: 6
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; 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; 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

PURPOSE:To reduce the equivalent disturbance current by restraining a main transformer from being divided in order to reduce the harmonics and to reduce the weight of a vehicle-mounted power supply by reducing the weight of the main transformer and decreasing the total number of elements in converters. CONSTITUTION:Vehicles, each mounting a power supply and composing a train, are divided into a plurality of groups and the modulation wave being employed in PWM control for all PWM converters in same composition of train is in- phase with a power supply voltage. A predetermined phase difference is set between the groups for the carrier being employed in PWM control of the PWM converters.