Method for controlling an electric motor by using

专利名称：Method for controlling an electric motor by

using the PWM technique

发明人：Sciuto, Marcello,Vigna, Sergio,Carbonaro,

Piero,Del Mese, Francesco

申请号：EP07425754.4申请日：20071128公开号：EP2068435B1公开日：20100106

摘要：A method for controlling an electric motor (3) by using the PWM technique; thecontrol method includes the steps of: applying to the clamps (38) of the electric motor(3) an electric voltage (Vm(t)) varying in time, which displays a square waveform andconsists of a sequence of pulses having a uniform wave period and a variable amplitude;adjusting the average value of the electric voltage (Vm(t)) applied to the clamps (38) ofthe electric motor (3) by varying the amplitude of the pulses of the electric voltage(Vm(t)); determining, in the case of a variation of the amplitude of the pulses, the overallrequired amplitude variation; subdividing the overall required amplitude variation in adetermined number of partial variations, the overall sum of which is equivalent to theoverall required amplitude variation; and gradually varying the amplitude of the pulses ofthe electric voltage (Vm(t)) by applying in a sequence a corresponding partial variation toeach pulse, so that the difference between the amplitude of a pulse and the amplitude ofa following pulse is equivalent to the corresponding partial variation.

申请人：MAGNETI MARELLI SPA

地址：IT

国籍：IT

代理机构：Jorio, Paolo

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