Magnetic amplifier regulator for a motor generator system

Claim 1

A REGULATING SYSTEM FOR A MOTOR GENERATOR SYSTEM INCLUDING A DIRECT CURRENT MOTOR DRIVING AN ALTERNATING CURRENT GENERATOR, SAID MOTOR HAVING A CONTROL WINDING AND SAID GENERATOR HAVING AN EXCITATION WINDING AND AN OUTPUT CIRCUIT, SAID REGULATING SYSTEM COMPRISING MEANS FOR SUPPLYING A MINIMUM LEVEL OF EXCITATION FOR SAID MOTOR CONTROL WINDING, MEANS FOR SUPPLYING A MINIMUM LEVEL OF EXCITATION FOR SAID GENERATOR EXCITATION WINDING, MEANS RESPONSIVE TO A CONDITION OF SAID OUTPUT CIRCUIT FOR SUPPLYING ADDITIONAL EXCITATION IN ACCORDANCE WITH SAID OUTPUT CONDITION, TO CONTROL THE SPEED OF SAID MOTOR, SAID MEANS INCLUDING A MAGNETIC AMPLIFIER HAVING A LOAD WINDING ENERGIZED FROM THE OUTPUT OF SAID GENERATOR, A CONTROL WINDING ENERGIZED IN ACCORDANCE WITH FREQUENCY CHANGES IN SAID GENERATOR OUTPUT TO AFFECT SAID LOAD WINDING IN A DIRECTION DEPENDING UPON THE DIRECTION OF SAID FREQUENCY CHANGES, A COMPENSATING WINDING ENERGIZED IN ACCORDANCE WITH THE LOAD CURRENT IN SAID GENERATOR OUTPUT TO AFFECT SAID LOAD WINDING IN ACCORDANCE WITH SAID LOAD CURRENT, AND MEANS INCLUDING A DETECTOR FOR DETECTING VARIATIONS IN OUTPUT VOLTAGE TO MAINTAIN SAID OUTPUT VOLTAGE AS A PREDETERMINED VALUE.