DC GENERATOR CONSTRUCTIONDC GeneratorsES-05Page 14Rev. 0Figure 9 Output Voltage-vs-Load Current for Shunt-Wound DC GeneratorThe shunt-wound generator, running at a constant speed under varying load conditions, has amuch more stable voltage output than does a series-wound generator. Some change in outputvoltage does take place. This change is caused by the fact that, as the load current increases, thevoltage drop (I R ) across the armature coil increases, causing output voltage to decrease. Asa aa result, the current through the field decreases, reducing the magnetic field and causing voltageto decrease even more. If load current is much higher than the design of the generator, the dropin output voltage is severe. For load current within the design range of the generator, the dropin output voltage is minimal (Figure 9).
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
