Series-Wound DC Generators
When the field winding of a DC generator is connected in series with the armature, the generator is called a series-wound generator (Figure 10). Figure 10a :Â Series-Wound DC Generator…
Shunt-Wound DC Generators
When the field winding of a generator is connected in parallel with the generator armature, the generator is called a shunt-wound generator (Figure 8). Figure 8a : Shunt-Wound DC Generator…
DC Generator Internal Losses
There are four internal losses that contribute to lower efficiency of a DC generator. Copper losses Eddy-current losses Hysteresis losses Mechanical losses Copper Losses Copper loss is the power lost…
DC Generator Theory
DC generators are widely used to produce a DC voltage. The amount of voltage produced depends on a variety of factors. Voltage Production For DC Circuits there are three conditions…
DC Machines Construction
Direct current machines are energy transfer devices. These machines can function as either a motor or a generator. DC motors and generators have the same basic construction, differing primarily in…
DC Machines Terminology
DC Machines Terminology Terminal Voltage Terminal voltage, as applied to DC generators, is defined as the voltage that can be measured at the output of the generator. Counter-Electromotive Force (CEMF)…
Battery Hazards
Because batteries store large amounts of energy, there are certain hazards that are associated with battery operation. These hazards must be fully understood to ensure safe operation of batteries. Shorted…
Types of Batteries
The lead-acid battery is the most common type of battery in use today. There are other types of storage batteries, each having certain advantages. Types of batteries are : Carbon-zinc…
Battery Operation : Series and Parallel
Once the basic theory behind the operation of batteries is understood, we can apply these concepts to better understand the way batteries are utilized. Series Cells When several cells are…
Discharge and Charging of Lead-Acid Battery
In a lead-acid battery, two types of lead are acted upon electro-chemically by an electrolytic solution of diluted sulfuric acid (H2SO4). The positive plate consists of lead peroxide (PbO2), and…
