RETURN                                                                    HOME

Synchronous generator: Capability curves

The capability curves of a synchronous generator operating at rated voltage give the maximum active- and reactive-power loadings that can be suplied without exceeding the KVA rating (armature heating limit) or the field heating limit. Dragging point R which establishes the rated operating conditions changes the power factor. The slider KVA controls the rating. Dragging point A shows the effects of machine reactance. The stabilty limit is reached  when δ = 90°.

©  M. Riaz