Electrolux Appliances Aktiebolag

Piero Stocco

Fabio Altinier

Elena Pesavento

Terenzio Girotto

Andrea De Bernardo

Lorenzo Corso

Alberto Bisutti

A washing machine having a first single phase electric motor, a second single phase electric motor and an electric drive unit for the electric motors. The electric drive unit is connected to power supply lines and comprises three first legs, each leg comprising a pair of switches. Electrical terminals of the first electric motor are connected to the first and second legs of the electric drive unit and electrical terminals of the second electric motor are connected to the second and third legs of the electric drive unit.

Washing machine for washing articles equipped with an electric drive unit to operate electric motors

A method to control a laundry machine. The method includes: controlling an electric motor to rotate a drum to change the rotational speed according to a prefixed reference speed profile comprising an acceleration ramp from a low speed to a prefixed high speed and a constant speed phase at the high speed, sampling first torque values generated by the motor during the acceleration ramp according to a first sample time, sampling second torque values generated by the motor during the constant speed phase according to a second sample time, calculating a third value indicative of an average torque being calculated on the basis of the second torque values, determining a fourth value by performing an integral function with respect to the first torque values less the third value, and determining the amount of laundry load on the basis of the fourth value.

Method for estimating the amount of laundry loaded in a rotating drum of a laundry washing machine

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Porcia, Italy

Piero Stocco