Invention Grant
US09446668B2 Drive method with shifting of the switching frequency and drive device 有权
驱动方式切换频率和驱动装置

Drive method with shifting of the switching frequency and drive device
Abstract:
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.
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