3results about How to "Increase reluctance torque" patented technology

Provided is an electric motor in which leakage flux of a permanent magnet is suppressed and magnetic flux generated by a stator winding flows into a rotor. The electric motor includes a rotor (20) having a rotor core (30) and permanent magnets (80) that form a plurality of magnetic poles, respectively. A space portion (90) is formed between two adjacent magnetic poles of the plurality of magnetic poles, and a protrusion portion (91) protrudes radially outward from between the two adjacent magnetic poles toward the space portion (90).

The utility model discloses a permanent magnet auxiliary synchronous reluctance motor for an electric vehicle. The permanent magnet auxiliary synchronous reluctance motor for the electric vehicle comprises a shell, a stator assembly and a rotor assembly, the rotor assembly comprises a rotor core, a permanent magnet assembly and a motor shaft. The plurality of permanent magnet assemblies are uniformly distributed along the circumferential side of the rotor core; the permanent magnet assembly is of a triangular structure. The problem that a driving motor of an existing electro-tricycle is small in torque and cannot meet the performance requirement of the whole tricycle is solved. The permanent magnet auxiliary synchronous reluctance motor for the electric vehicle provided by the utility model has the advantages of low induced voltage, small linear current, high rotating speed, wide high-efficiency area and the like.

The application provides a rotor structure and a motor. The rotor structure comprises: a rotor core (1) provided with a magnetic steel slot (11); a first permanent magnet (2) installed in the magnetic steel slot (11), wherein the first permanent magnet (2) is radially magnetized; and a second permanent magnet (3) arranged at an axial end of the rotor core (1), wherein the second permanent magnet (3) is axially magnetized, and the second permanent magnet (3) comprises a plurality of polarity regions, and an included angle a between a geometric center line of one of the polarity regions and a d-axis of a polarity region adjacent to the one of the polarity regions and radially outside the one of the polarity regions and having the same polarity satisfies a >= 360° / 4p, and p is a pole pair number of the motor. According to the rotor structure, the inductance difference and the reluctance torque of the motor can be improved.