Synchronous machines — III: Torque-angle characteristics under transient conditions

This is the third part of a series of papers on the subject of synchronous machines. The first two were I. An Extension of Blondel´s Two-Reaction Theory, II. Steady State Power-Angle Characteristics. The present paper deals with the power-angle, or torque-angle, characteristics under transient conditions, namely, A. Cyclic variation of impressed torque, B. Sudden angular displacement, C. Synchronizing out of phase.