Switched reluctance motor and stator thereof

Patent metadata

Field	Value
Publication number	US-9413213-B2
Application number	US-201314034083-A
Country	US
Kind code	B2
Filing date	Sep 23, 2013
Priority date	Jul 31, 2013
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A stator of a switched reluctance motor includes a stator core part, stator coiling parts, stator salient parts, and pairs of permanent magnets. The stator coiling parts protrude inwardly from the stator core part and have coils wound on an external side thereof. The stator salient parts protrude inwardly from the stator core part and are disposed between the stator coiling parts. Each pair of the permanent magnets is inserted into each of the stator coiling parts and magnetized in the same direction as a direction of a magnetic field generated by the excitation of the coils. This stator has an electromagnetic structure designed to prevent the reversal of a magnetic field generated by the excited coils. The output of the motor is enhanced by inserting the permanent magnets so as to be magnetized in the same direction as a direction of a magnetic field generated by the excited coils.

First claim

What is claimed is:

1. A stator of a switched reluctance motor, the stator comprising:
a stator core part;
a plurality of stator coiling parts protruding inwardly from the stator core part and having coils wound on an external side thereof;
a plurality of stator salient parts protruding inwardly from the stator core part and disposed between the stator coiling parts; and
pairs of permanent magnets, each pair being inserted into each of the stator coiling parts and magnetized in the same direction as a direction of a magnetic field generated by the excitation of the coils.

2. The stator of claim 1 , further comprising:
another pairs of permanent magnets, each pair being inserted into each of the stator salient parts and magnetized in the same direction as the direction of the magnetic field generated by the excitation of the coils.

3. The stator of claim 1 , wherein each pair of the permanent magnets inserted into each of the stator coiling parts is extended into the stator core part adjacent to the stator coiling parts and magnetized in the same direction as the direction of the magnetic field generated by the excitation of the coils.

4. The stator of claim 1 , wherein each pair of the permanent magnets is inserted into the stator coiling part so as to be equally distant from a central line of the stator coiling part.

5. The stator of claim 1 , wherein each pair of the permanent magnets is inserted into the stator coiling part so as to be aligned with a protruding direction of the stator coiling part.

6. A switched reluctance motor comprising:
a stator including:
a stator core part;
a plurality of stator coiling parts protruding inwardly from the stator core part and having coils wound on an external side thereof;
a plurality of stator salient parts protruding inwardly from the stator core part and disposed between the stator coiling parts; and
pairs of permanent magnets, each pair being inserted into each of the stator coiling parts and magnetized in the same direction as a direction of a magnetic field generated by the excitation of the coils; and

a rotor installed inside the stator and including:
a rotor core part; and
a plurality of rotor salient parts protruding outwardly from the rotor core part, each of the rotor salient parts facing one of the stator coiling parts and the stator salient parts.

7. The switched reluctance motor of claim 6 , wherein the stator further includes another pairs of permanent magnets, each pair being inserted into each of the stator salient parts and magnetized in the same direction as the direction of the magnetic field generated by the excitation of the coils.

8. The switched reluctance motor of claim 6 , wherein each pair of the permanent magnets inserted into each of the stator coiling parts is extended into the stator core part adjacent to the stator coiling parts and magnetized in the same direction as the direction of the magnetic field generated by the excitation of the coils.

Assignees

• Korea Electronics Technology
• Univ Ulsan Found For Ind Coop

Inventors

• Lee Cheewoo
• Hur Jin
• Lee Jeongjong
• Rhyu Sehyun
• Seo Jungmoo
• Kim Youngkyoun
• Jung Insoung

Classifications

• H02K21/44

  with armature windings wound upon the magnets · CPC title

• H02K19/103 Primary

  Motors having windings on the stator and a variable reluctance soft-iron rotor without windings · CPC title

• H02K1/17 Primary

  Stator cores with permanent magnets · CPC title

• H02K3/46

  Fastening of windings on the stator or rotor structure · CPC title

• H02K19/10

  for multi-phase current · CPC title