Abstract
Aiming at the problems of large excitation loss and low power generation efficiency of silicon rectifier generators and the unstable output voltage of permanent magnet (PM) generators, a hybrid excitation generator (HEG) with suspended brushless claw pole electrical excitation rotor (EER) and combined magnetic pole PM rotor is proposed in the present work. With only one fractional slot winding stator, the generator adopts PM field as the main magnetic field and electrical excitation field as the auxiliary magnetic field, which not only retains the advantages of high efficiency of PM generators but also effectively reduces excitation consumption. The main structure parameters and the design method were analyzed, and a simulation analysis of no-load magnetic field distribution and flux regulation ability was carried out using finite element software to verify the rationality of the hybrid excitation parallel magnetic circuit design. Moreover, the no-load, load, regulation, and voltage regulation characteristics of the designed generator were tested, and the results show that the designed generator has a wide range of voltage regulation, which can ensure stable output voltage under variable speed and load conditions.
Highlights
At present, silicon rectifier generators are widely used in vehicle generators
The diameter of the bare wire of winding can be calculated as follows: The diameter of the bare wire of electric excitation winding is determined by electrical trend excitation current (EEC) and EEC density, 4I f and the diameter of the enameled wire is selected according to the winding standard of the generator df =
We studied a hybrid excitation generator (HEG) for vehicles that consists of a combined rotor with brushless claw pole electrical excitation rotor (EER) and combined permanent magnet (PM) rotor in coaxial parallel as well as a double-layer fractional slot winding stator
Summary
Silicon rectifier generators are widely used in vehicle generators. their thermal effect of electric excitation winding consumes a lot of heat energy, so their power generation efficiency is low. In terms of voltage control, on the basis of the achieved certain research results that provide useful reference for the research and development o traditional electronic control system, some improved voltage stabilizing control system with neural high-performance On this basis,mode this paper proposes a HEG with suspended brushless networkHEGs control, [18,19,20,21,22,23,24]. The generator uses the PM field as the main magnetic field to improve the achieved certain research results that provide useful reference for the research and development of power density and the electrical excitation auxiliary field to reduce high-performance. The brushless claw pole rotor eliminates the damaged carbon brush slip ring structure, which canof effectively
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