... HIGH PERFORMANCE DRIVES 57 - applied ... constant flux region -5 0.05 Fig 3.14 - Reversing transient of the drive of Fig 3.9 E Levi, 2001 HIGH PERFORMANCE DRIVES 58 - to ... and its spectrum Obviously, the current is not an ideal sine wave However, all the higher harmonics are of very high frequency and are situated around multiples of the 10 kHz frequency, which is...