What is Pelton wheel generator?

The Pelton wheel is an impulse-type water turbine. The Pelton wheel extracts energy from the impulse of moving water, as opposed to water’s dead weight like the traditional overshot water wheel. Many variations of impulse turbines existed prior to Pelton’s design, but they were less efficient than Pelton’s design.

How does a Pelton work?

The water in a Pelton turbine is moving quickly (high velocity head, figure 2) and the turbine extracts energy from the water by slowing the water down, which makes this an impulse turbine. The water then flows through the penstock to specialized nozzles that introduce pressurized water to the turbine.

How big is a Pelton water wheel generator?

This 25-ton Pelton wheel is designed for installation in a 30,000-hp. unit. It turns at 171 r.p.m. and has a 1,008′ head. POPULAR SCIENCE A 12″ Pelton wheel with reducer and gatevalve throttle. POPULAR SCIENCE Though one of man’s oldest prime movers, a water wheel generator is still a fascinating piece of machinery.

Why are Pelton wheels used in hydro turbines?

This design has the water leaving the wheel with very little speed; thus extracting almost all of the water’s impulse energy—making it a very efficient turbine. Pelton wheels are common turbine for small hydro-power, when the available water source has relatively high hydraulic head at low flow rates, where the Pelton wheel is most efficient.

How big is a GE Pelton hydro turbine?

Pelton Hydro Turbine. High performing turbines for heads ranging from 200m to 1,800m. Based on vast field experience, GE offers vertical shaft machines equipped with multi-jet collectors for an output up to ~350 MW and with runner diameters up to 4m.

How does a Pelton micro hydro generator work?

With terminals to connect to the alternator power. With terminals to connect to the governor. With suitable protection to protect against incoming mains faults. Generator protection functions (over current, over load, over voltage, low voltage, over-speed, low frequency and so on).