The main difference between a single-phase generator and a three-phase generator is the number of phases in the output voltage and current.
As the name suggests, the single phase generator produces only one phase of voltage i.e. V1=0, so the voltage and current produced by the single phase generator are both single-phase. The advantages of this type of generator are its simple structure, low manufacturing cost and practical use. Additionally, due to its small size and light weight, it is more suitable for use on mobile devices. However, the disadvantage of a single-phase generator is that its output power is low, and it generally can only meet the electrical needs of some small-power electrical appliances or lighting equipment.
On the other hand, the output voltage of a three-phase generator has three phases, i.e. V1=V2=V3=0, therefore the voltage and current dThe output of the three-phase generator are both three-phase. phase. The advantage of this type of generator is that its output power is large, which can meet the power demand of some high-power electrical appliances or industrial equipment. Additionally, since the three-phase voltage and current it produces can cancel each other out, it can reduce interference with the power grid. However, the structure of a three-phase generator is more complex than that of a single-phase generator, the manufacturing cost is higher, and its operation is more difficult.