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This Paper presents the effects of the Parasitic Torques in a single phase induction motor, on the Vibration and Noise that's generated from choosing unsuitable value of running capacitor. In this research a computer program has been developed of the motor Sound. The sound signal is measured by using a sound level meter and then it is transmitted to the computer through a data acquisition card and then the signal has been analyzed. In addition to that the Vibration signal has been analyzed. Experimental results has been obtained in the Anechoic Chamber Laboratory, It has been found that the optimum value of the running capacitor for this induction motor was 23μf .This gives minimum Parasitic Torques whose frequency is twice the input source frequency, and therefore minimum noise and vibration caused by this Parasitic Torque has been obtained. [ABSTRACT FROM AUTHOR]

This paper presents an experimental investigation of the conversion of the three-phase induction motors (IM) to run as three-phase induction generators (IG) by using capacitors proportional to the load power and the generator power. The potential of these capacitors must not be less than 450 V and connected in parallel with three-phase output. The generator must be run on full load to balance the inductive loads which connect to a generator with the capacitive loads. The experimental results indicate that the three phases IM with high power reaches 90 KW can be led as three phases IG with power (112.5 KVA).