PERMANENT MAGNETIC ROTOR STRUCTURE

• Main Author: PAN, MINGPAN
• Format: Patent
• Language: English; French
• Published: 05.03.2015
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

A permanent magnetic rotor structure comprises a rotor iron core (1) and permanent magnets (2). The rotor iron core comprises a plurality of magnetic guide blocks (11). A radial groove (12) for mounting the permanent magnets is formed between two adjacent magnetic guide blocks. The magnetic guide blocks are convexly provided with stop hooks (13) at two sides of each opening portion of the radial groove. The permanent magnets comprise first permanent magnets (21) and second permanent magnets (22). One side of each first permanent magnet is an N-pole strong magnetic surface (211), and the other side is an S-pole weak magnetic surface (212). One side of each second permanent magnet is an N-pole weak magnetic surface (221), and the other side is an S-pole strong magnetic surface (222). The first permanent magnets and the second permanent magnets are mounted in the radial grooves alternatively. The N-pole strong magnetic surface of the first permanent magnet and the N-pole weak magnetic surface of the second permanent magnet in the adjacent two radial grooves joint at two side surfaces of a same magnetic guide block to form an N-pole magnetic pole, and the S-pole weak magnetic surface of the first permanent magnet body and the S-pole strong magnetic surface of the second permanent magnet body in the adjacent two radial grooves joint at two side surfaces of a same magnetic guide block to form an S-pole magnetic pole, thereby making magnetic field distribution more uniform, and reducing vibration and noise of a motor during operation.