Axial field rotary energy device having pcb stator and variable frequency drive
US-2024429765-A1 · Dec 26, 2024 · US
Electric motor having reduced cogging torque
US8970080B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8970080-B2 |
| Application number | US-10053508-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 10, 2008 |
| Priority date | Jul 5, 2007 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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Having a stator core including a yoke, a plurality of inside teeth, and a plurality of outside teeth, an inside rotor, and an output rotor, the inside slot open angle/inside pole angle and the outside slot open angle/outside pole angle are determined so that the inside cogging torque due to rotation of the inside rotor and the outside cogging torque due to rotation of the outside rotor may cancel each other in inverted phases. Plural combinations are provided so that the amplitude of inside cogging torque and the amplitude of outside cogging torque due to rotation of outside rotor maybe approximate values in inverted phase, and the combination of the highest combined voltage value of the both induced voltage is selected.
First claim
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What is claimed is: 1. An electric motor comprising: a stator including a yoke, a stator core having a plurality of inside teeth projecting in the inside direction of the yoke forming a plurality of inside slot open angles and a plurality of outside teeth projecting in the outside direction of the yoke forming a plurality of outside slot open angles, and a winding wound on the stator core; an inside rotor opposite to the end face of leading ends of the inside teeth across a gap,…
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- What does patent US8970080B2 cover?
- Having a stator core including a yoke, a plurality of inside teeth, and a plurality of outside teeth, an inside rotor, and an output rotor, the inside slot open angle/inside pole angle and the outside slot open angle/outside pole angle are determined so that the inside cogging torque due to rotation of the inside rotor and the outside cogging torque due to rotation of the outside rotor may canc…
- Who is the assignee on this patent?
- Li Hu, Yoshikawa Yuichi, Murakami Hiroshi, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H02K16/02. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).