Rare-earth permanent magnet coreless generating set

Abstract

The invention discloses a rare-earth permanent magnet coreless generating set, which comprises a frame, an engine, a generator, an inverter and an output power box. The generator comprises a generator seat plate, a generator shell, a stator, a first magnetic blocking plate, a second magnetic blocking plate and a plurality of rare-earth permanent magnets, wherein the generator seat plate is fixed on the engine; the generator shell is fixed on the generator seat plate; the stator is fixed on the generator shell and comprises a disc winding and a fixed shell which covers the disc winding and is made of a high polymer; the first magnetic blocking plate is fixed on an output shaft through a flat key, is positioned between the stator and the generator seat plate and defines an air suction chamber and an air exhaust chamber; a first air guide port which is connected with the air suction chamber and an air exhaust chamber is formed at a position of the first magnetic blocking plate close to the output shaft; the second magnetic blocking plate is fixed on the output shaft through a flat key and is positioned on one side of the stator away from the first magnetic blocking plate; and the plurality of rare-earth permanent magnets are fixed on the first magnetic blocking plate and the second magnetic blocking plate through permanent magnet pressing blocks and correspond to the stator. The rare-earth permanent magnet coreless generating set has lower thermal efficiency and high electric energy output efficiency.

Description

【Technical field】 [0001] The invention relates to a generator set driven by an engine, in particular to a rare earth permanent magnet ironless generator set. 【Background technique】 [0002] In the prior art engine-driven generator set, the generator stator is installed coaxially with the engine crankshaft, and the generator stator is directly assembled on the engine casing or side cover and other components. The outer rotor of the shell structure is assembled on the power output end of the crankshaft of the engine, and the direction of the shell opening faces the stator of the engine and the generator. A cooling fan is installed on the back of the housing of the outer rotor to cool the generator stator, rotor and other components. Since the generator stator of this generator is located between the engine and the generator rotor casing, although there is a heat insulation space between it and the engine, the heat generated by the generator operation will still radiate to the...

AI Technical Summary

Problems solved by technology

Since the generator stator of this generator is located between the engine and the generator rotor casing, although there is a heat insulation space between it and the engine, the heat generated by the generator operation will still radiate to the generator stator, resulting in power generation. The output efficiency of electromechanical energy is reduced, the output cable of the generator is easy to age due to heat, and the maintenance of the generator stator is complicated and other technical problems

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