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When we increase excitation voltage, Gen. terminal voltage also increases. What happens to current at Gen. terminal? Please explain

If we increase the excitation voltage, the generator terminal voltage will also increase because we are creating stronger magnetism. The greater the excitation voltage, the greater magnetism, the greater output voltage. If your generator has no load, definitely there will be no current flowing on the generator terminal. If you have load, of course the current will decrease as you increase the voltage. Please refer to ohms law.

Ok thats fine. Ohm's law explains it. But I came across a case where Gen increasing winding temp. was a problem so it was advised to keep MVARs up to a certain limit. Intention was obviously that lower the excitation voltage(lower MVARSs), lower the voltage at Gen. terminals & hence lower the current in Gen. winding? Please comment