TW371820B - A control circuit by employing the dynamic current feedback excited magnetic of an auxiliary generator to control a DC generator - Google Patents

Abstract

As shown in the previous patent #59965, it is discovered that the dynamic current feedback excited magnetic DC generator control circuit has three circuit, namely the branched excitation circuit, the series excitation circuit and the compound excitation circuit, mainly comprising a branched excited, a series excited or compound excited motor wound with an additional branched excited magnetic field winding and a current-driving DC motor, which basing on the magnitude of armature current, generates high or low revolution to drive the auxiliary generator; the electric energy produced in the auxiliary generator will flow into the auxiliary magnetic field of the main generator. The magnetic excitation means includes to excite the similar polarized magnetic field in the main generator's winding so as to augment the armature current as well as the magnetic field strength of the main generator, or to excite nonpolarized differential magnetic in the main generator's winding so when the armature current is augmented, but the total magnetic field strength is deceased; these interfaces can be used to the great advantage for controlling the output voltage of the auxiliary generator or the output impedance and current so as to increase or to decrease the magnetic excitation value in the main generator's auxiliary winding. The invention provides a betterment of the branched or series excitation winding in cost reduction, less winding and less heat generation within the main generator. The control circuit of the present invention will substantially take the place of expensive, magnet saturated amplifier or other complicated solid state switch loop used for controlling the generators and motors.