Multipolar serial flux-weakening motor

Abstract

The invention belongs to a multipolar serial flux-weakening motor which comprises: a housing (1), an end cap (2) and a main shaft (4). The motor is characterized in that: three rotors are uniformly distributed on the main shaft (4), wherein the three rotors are fixed through a key (18); the rotors comprise the key (18) and a shaft sleeve (5), wherein the key (18) forms a tight fit connection with the shaft sleeve (5); a rotor core (11) is fixed on the shaft sleeve (5); N pole and S pole are uniformly distributed on upper and lower surfaces of the rotor core (11), and N dipole magnets (9) and S dipole magnets (12) are alternatively fixed on the N pole and the S pole; upper stators (6) are installed on upper sides of the rotors and lower stators (13) are installed on lower sides of the rotors; oriented silicon steel plates (7) are radially folded to form the stators; Three expanding gap supports (16) are uniformly distributed and fixed on a circumference of every stator; the expanding gap supports (16) are equipped with nuts (15); the nuts (15) is flexibly connected with a lead screw (14); the lead screw (14) is flexibly installed in a lead screw seat (17). The motor adjusts magnetic flux air gap through controlling a transmission mechanism so as to adjust a rotating speed and a torque. The motor is a first choice for an electric vehicle using new energy.

Description

Technical field: [0001] The invention belongs to electric motors, in particular to a multi-pole tandem weak field speed-expanding motor. Background technique [0002] There are many kinds of electric motors, and they are widely used as the source of power for various machines; however, their disadvantages are that it is difficult to adjust the speed, the size of the torque cannot be changed, and it cannot be used in series. If the series application has no kinetic energy, it will form a load. At present, in order to solve the air pollution of automobiles and save gasoline, everyone is researching electric vehicles; for this reason, it is necessary to develop a motor that can facilitate speed regulation and torque. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, and provide a multi-pole series weak field speed-expanding motor which is mainly used in electric vehicles, elevators and steel wir...

AI Technical Summary

Problems solved by technology

[0002] There are many kinds of electric motors, and they are widely used as the source of power for various machines; however, their disadvantages are that it is difficult to adjust the speed, the size of the torque cannot be changed, and it cannot be used in series. If the series application has no kinetic energy, it will forming load

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