15kw 250rpm 230V PMG Permanent Magnet Generator For Hydro Turbine

15kw 250rpm 230V PMG Permanent Magnet Generator For Hydro Turbine

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What is the permanent magnet generator?

A permanent magnet generator (PMG) is an electric generator that uses permanent magnets to create a magnetic field. The magnetic field is used to induce a voltage in a coil of wire that is connected to the generator. This voltage is then used to power electrical devices or to store energy in batteries.

The structure

The design of a PMG is relatively simple. It consists of a rotor, stator, and permanent magnets. The rotor is a rotating shaft that contains permanent magnets. The stator is a stationary component that surrounds the rotor and contains the coils of wire. When the rotor spins, the magnetic field created by the permanent magnets cuts across the coils of wire in the stator, inducing a voltage.

Working Principle

The permanent magnet generator uses the principle of electromagnetic induction in that the wire cuts the magnetic field line to induce an electric potential and converts the mechanical energy of the prime mover into electrical energy output. It consists of two parts, the stator, and the rotor. The stator is the armature that generates the electricity and the rotor is the magnetic pole. The stator is composed of an armature iron core, uniformly discharged three-phase winding, machine base, and end cover.

The rotor is usually a hidden pole type, which is composed of excitation winding, iron core and shaft, guard ring, center ring, and so on.

The excitation winding of the rotor is fed with DC current to generate a magnetic field close to the sinusoidal distribution (called the rotor magnetic field), and its effective excitation flux intersects with the stationary armature winding. When the rotor rotates, the rotor's magnetic field rotates together with it. Every time a revolution is made, the magnetic lines of force cut each phase winding of the stator in sequence, and a three-phase AC potential is induced in the three-phase stator winding.

When the pm generator is running with a symmetrical load, the three-phase armature current synthesizes to generate a rotating magnetic field with synchronous speed. The stator and rotor fields interact to generate braking torque. The mechanical torque input from the turbine overcomes the braking torque and works.

Features

① The generator has many poles, which improve the frequency and efficiency, saving the cost of rectifiers and inverters.

② Finite Element Analysis is used when designing the generator, compact structure. Low startup torque, solves the problem of small wind startup, improving wind energy utilization.

③ Leave out the gear increaser, improve the reliability and efficiency of the generator, and lower the amount of maintenance.

④ H class insulation, vacuum pressure impregnation.

⑤ Have many structures such as vertical axis, horizontal axis, internal rotor, external rotor, and plate type.

⑥ Strong rotors, the generator could achieve high speed.

⑦ Small size, lightweight, high energy density, suitable for special situations.

⑧ Run efficiency throughout the whole speed range, high efficiency.

⑨ Use imported high-speed oil-contained bearings, maintenance free, and high reliability.

The value of Enneng is Technology is how we do things. People are why we do things.

As a leading manufacturer of permanent magnet AC motors and generators, Enneng is committed to providing the best solutions for our customers while also prioritizing energy savings and low carbon emissions. We believe that it is our responsibility to contribute to a sustainable future by promoting energy-efficient solutions and reducing our carbon footprint.

Enneng Motor has been committed to the research and development of various permanent magnet AC motors that can directly drive equipment, usually low-speed, high-torque motors, optimized for mechanical equipment with reducer + motor drive in the transmission system. These motors usually have a durable design, high efficiency, and low noise level, and can provide customers with customized services from equipment transmission design to provide special sizes and rated power options to meet the needs of different applications, so as to achieve energy-saving performance.

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Permanent magnet generators are suitable for small and low-head hydro sites and small and low-speed wind power generation. Our products are highly efficient and reliable, making it possible for more and more small-size hydro and wind power generation projects to become feasible.

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Our mission is to help our customers succeed by providing effective solutions. We believe that by providing high-quality permanent magnet generators, we can help our customers to successfully build sustainable and environmentally friendly energy systems. We invite you to join us in our mission to build a more sustainable world together.