DRIVE METHOD WITH SHIFTING OF THE SWITCHING FREQUENCY AND DRIVE DEVICE

• Main Authors: BERGMANN DOMINIK, CYRIACKS MARCO, POPESCU ALEXANDRU, GERLICH MATTHIAS, BACHMAIER GEORG, PAIS GUILLAUME, BACHMANN CHRISTIAN
• Format: Patent
• Language: English; Korean
• Published: 13.05.2015
• Subjects: 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; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

복수의 모터(motor)들이 인버터(inverter)들을 통해 중간 회로로부터 피딩(feed)되는 경우, 중간 회로의 전류는 복수의 고조파들(-5th, -3th, -1st, +1st, +3rd, +5th)을 갖는다. 중간 회로의 커플링 커패시터(coupling capacitor)들이 과부담(over-burden)되는 것을 방지하기 위해, 고조파들이 더 이상 공진 범위(7) 내에 있지 않도록, 인버터들의 스위칭 주파수(switching frequency)가 시프팅(shift)된다. A method for driving a vehicle comprising at least two motors is provided. If a plurality of motors are fed from an intermediate circuit via inverters, the current in the intermediate circuit has a plurality of harmonics (−5th, −3th, −1st, +1st, +3rd, +5th). To prevent coupling capacitors of the intermediate circuit becoming over-burdened, the switching frequency of the inverters is shifted in such a manner that the harmonics no longer fall into a resonance range.