AN1479 Datasheet, PDF (1/13 Pages) STMicroelectronics – Due to increasing consumer awareness

AN1479
APPLICATION NOTE
HIGH-PERFORMANCE MOTOR SYSTEM
FOR WASHING MACHINES
by Motor Control Competence Center
INTRODUCTION
Due to increasing consumer awareness of the need for preserving the environment and re-
ducing greenhouse-effect gas emissions, washing machine manufacturers have undertaken
advanced studies over the past few years that are designed to reduce the water and power
consumption of their machines. They have also been encouraged to do this by European and
American governments who have passed legislative measures both in technical fields as well
as in the field of consumer information.
These energy saving measures involve improving the performance and efficiency of the types
of motors used.
With a reduction of 200 Watts-hour per wash load (not including drying process), 300 cycles
per year and 60 million washing machines sold each year worldwide, the potential amount of
energy saved adds up to 4 billion kWh, i.e. approximately 4 million tons less of carbon dioxide
in the atmosphere. Accumulated over three years and applied to refrigerators and household
air-conditioning systems in the same manner, it is estimated that 200 million tons of carbon di-
oxide emissions can be eliminated. This would help to efficiently reduce the harmful conse-
quences of the greenhouse effect.
For all these reasons, STMicroelectronics, in collaboration with major market players, has
been driven to develop electronic motor control components that improve the output of equip-
ment and also significantly reduce acoustic noise levels. These benefits are greatly appreci-
ated by consumers.
AN1479/0102
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