How can improve voltage quality?

[upendra badal]

How can increase the Voltage from 185 Volt AC to normal Voltage range (230 V AC) for my house as in the evening time i m suffering from this problem.

does capacitor help? and i don't want to installed the Voltage stabilizer.

 

[I_am_learning]

No, you can't connect capacitor to improve the voltage.
You must use a voltage stabilizer.

 

[jim hardy]

I'd suggest call power company and have them check the taps on your transformer.

If it were a bad connection something should be smoking.

They need to be aware of such drastic sag and correct it.
You can burn up induction motors from low voltage. At 185/230 they'll only make 2/3 torque so may not start.
Advise wife don't run her washing machine when voltage is that low.
And keep an ear on your fridge - if it hums and clicks and doesn't start unplug it till voltage comes back..