In our test bed for testing ac motors of LT Range, we observe analog ammeter and correspondingly wattmeters- showing fluctualing and oscilating current, instead of steady current. Request your kind solutions for this phenomenon.
The test bed consists of a DC Motor driven alternator; which gives the ac supply required for the test motor. The ac motor is coupled to a dc generator. The DC generator and DC Motor are paralleled; and subsequent to which the load on the ac motor is adjusted by controlling the excitation of the DC Generator.
It appears that the fluctuating current the analog meter showing is due to low frequency current in the stator of the ac motor; superimposed on the fundamental current, showing fluctuating current.
Which machine in the above set up can result in this problem?
AC Motor Testing- Meter Showing Fluctuating Current
Re: AC MOTOR TESTING- METER SHOWING FLUCTUATING CURRENT..
