System of drive of switch magnetoresistive electric machinery broke traditional

From;  Author:Stand originally
System of drive of electric machinery of new generation drawing
After from 20 centuries system of drive of electric machinery of magnetoresistive of 80 time switch comes out, the electric machinery that broke a tradition devises theory and way of power supply of source of sine wave voltage; And as magnetoresistive electric machinery, the development of technology of electron of permanent magnetism electric machinery, electric power and computer technology, design of system of drive of alternating current machine enters a new golden age; Simple structure of new electric machinery develop and control means layer go not investigate, rolled out system of drive of electric machinery of unifinication of new generation Electromechanical swift and violent development. Quantify high density, efficiently, gently, one of main heat that system of drive of electric machinery of drawing of low cost, wide timing already made each country research and development.
The main characteristic of system of drive of electric machinery of magnetoresistive of · SRD switch is electric machinery structure compact and firm, agree with high speed moves, and drive circuit is simple cost low, function is reliable, inside broad rotate speed range efficiency is compared tall, and can realize 4 quadrantal control conveniently. These move below all sorts of operating mode that the characteristic makes system of drive of electric machinery of SRD switch magnetoresistive suits electric car very much, it is the opportunity that latent capacity has extremely in electric car kind. The biggest characteristic of SRD is torsion pulsatile big, noise is big; In addition, electric machinery of opposite permanent magnetism, power density and efficiency on the low side; Another defect is to should use positional sensor, increased structural complexity, reduced reliability. Because this does not have the SRD of sensor,also be one of development trends of future.
Electric machinery of magnetoresistive of · magneto switch also calls electric machinery of biconvex pole permanent magnetism, electric machinery of magneto switch magnetoresistive can be used cylindrical structure of structure of radial magnetic field, magnetic field of disk type axial and structure of annular and transverse magnetic field. This electric machinery added permanent magnetism torsion in the alternate on the foundation of magnetoresistive torsion, the existence of permanent magnetism torsion conduces to the power that enhances electric machinery density and reduce torsion pulsatile, the application in car drive system is used in report at it with benefit.
· rotor magnetic pole is broken up model the great attention that this one concept offers electric machinery of synchronism of mixture excitation structure to cause center of research and development of international electrician bound and each big Motor Corporation. Rotor magnetic pole is broken up model electric machinery of synchronism of mixture excitation structure has field control capacity, the low speed of similar dc electric machinery aids weak magnetism of magnetism control and high speed to control, accord with He Henggong of large moment of force of low speed of electric machinery of electric car drawing to lead the demand of wide timing. At present the research of this electric machinery is in exploration phase, the mechanism of electric machinery and design theory remain to study at further development with perfect, the electric machinery of electric car drawing that chooses as the holiday has stronger potential competition dominant position.   
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