In the frequency-amplitude spectrum of a 2-Pole/4-Pole dual-winding induction motor operating at various times off electric company power, an in-factory motor generator (MG) set, a 6-step inverter-rectifier, variable speed power supply and a pulse-width-modulated (PWM)variable speed power supply (at constant volts per Hertz ratio for the latter two) what is the cause(s) of the peaks in the spectra at:
1. 1 x Line Frequency (1E) alone
2. 2E alone
3. 6E alone
4. Low-order E harmonics, ie., 1E,3E,5E,7E ...etc.
5. Low-order 6E harmonics, ie., 6E,12E,18E,24E,30E
6. High-order 6E harmonics, ie. 60E,66E,72E,78E,84E
7. n2E sidebands to Rotor Slot Passing (RSP) harmonics
8. 42E alone off the MG power supply vanstoja
1. 1 x Line Frequency (1E) alone
2. 2E alone
3. 6E alone
4. Low-order E harmonics, ie., 1E,3E,5E,7E ...etc.
5. Low-order 6E harmonics, ie., 6E,12E,18E,24E,30E
6. High-order 6E harmonics, ie. 60E,66E,72E,78E,84E
7. n2E sidebands to Rotor Slot Passing (RSP) harmonics
8. 42E alone off the MG power supply vanstoja