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HIGH-PERFORMANCE MOTOR SYSTEM FOR WASHING MACHINES

Table 1. System Power consumption benchmark between brush Universal motor and

brushless AC motor solutions.

Table 2. System (motor + drive) efficiency at high speed

Figure 5. Power control linearity

(Motor + drive total

consumption)

Brush Universal Motor W

Brushless Induction Motor W

5Kg cotton washing process

125

51

2.5kg cotton washing process

210

80

2.5kg Terry clothes washing process

250

150

1600 rpm spinning process

750

650

Motor speed r.p.m

Loading torque N.m

Input power W

Efficiency %

16 600

0.19

440

75

16 600

0.24

550

76

16 600

0.29

650

78

Stator freq = 286Hz

Regulated slip = 8Hz

0,00

200,00

400,00

600,00

800,00

1000,00

0,00

0,10

0,20

0,30

0,40

Torque (N.m)

Input power (W)

Linear (Input power (W))