公开(公告)号：US09479103B2

公开(公告)日：2016-10-25

申请号：US14423940

申请日：2013-08-29

Applicant: SHELL OIL COMPANY

Inventor： Michel Pieter Alfons Verhulst

IPC: H02P7/32 ,  H02P23/04 ,  H02P29/00 ,  F25J1/00 ,  F25J1/02

CPC classification number: H02P23/04 ,  F25J1/0022 ,  F25J1/0284 ,  F25J1/0298 ,  H02P29/40 ,  H02P29/50

Abstract: A variable speed drive system employing an electric motor and a frequency converter arranged between an AC power source and the electric motor is operated. The frequency converter functions to convert AC power obtained from the AC power source at a source frequency to converted power at a variable drive frequency. A mechanical assembly can be coupled to the electric motor. Electric modulation circuitry is provided interacting with the frequency converter. It is arranged to impose fluctuations, independently from any torsional excitation in the mechanical assembly and the AC power source, in the inter-harmonic frequencies of inter-harmonic currents generated in the frequency converter.

Abstract translation: 操作使用电动机的变速驱动系统和布置在AC电源和电动机之间的变频器。 变频器用于将以源频率从AC电源获得的AC电力转换为可变驱动频率的转换功率。 机械组件可以联接到电动机。 提供与变频器相互作用的电调制电路。 它被设置为在变频器中产生的谐波间谐波频率的独立于机械组件和交流电源中的任何扭转激励的波动。