Practical Aspects of Broken Rotor Bars Detection in PWM Voltage-Source-Inverter-Fed Squirrel-Cage Induction Motors

Figure 10

Power spectrum of the stator current around (left) 25% and (right) 50% full loads. Top row: 32 Hz and bottom row: 50 Hz reference frequency.

(a)

(b)

(c)

(d)