Field winding synchronous machine drive system
US-10250175-B2 · Apr 2, 2019 · US
Field winding type rotary machine
US11050330B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11050330-B2 |
| Application number | US-201916296962-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 8, 2019 |
| Priority date | Sep 8, 2016 |
| Publication date | Jun 29, 2021 |
| Grant date | Jun 29, 2021 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A field winding type rotary machine includes a stator having a stator core and a stator coil wound on the stator core, a rotor having a rotor core and a rotor field coil wound on the rotor core, and a rectifier element connected between both ends of the rotor field coil. The field winding type rotary machine includes a capacitor having a first terminal connected to an anode terminal of the rectifier element and a second terminal connected to any point of the rotor field coil.
First claim
Opening claim text (preview).
What is claimed is: 1. A field winding type rotary machine, comprising: a stator having a stator core and a stator coil wound on the stator core; a rotor having a rotor core and a rotor field coil wound on the rotor core; a rectifier element connected between both ends of the rotor field coil; and a capacitor having one end connected to one end of the rectifier element and another end connected to any point of the rotor field coil, wherein a connection position between the other end of the capacitor and the rotor field coil is a boundary position that divides the rotor field coil into a portion more affected by a leakage magnetic flux and a harmonic magnetic flux of a magnetic flux flowing through the field pole and a portion less affected by them. 2. The field winding type rotary machine according to claim 1 , wherein a current flowing through the stator coil is a current obtained by superimposing a fundamental current for generating a rotating torque and a harmonic current having a shorter cycle than the fundamental current. 3. The field winding type rotary machine according to claim 1 , wherein the rotor field coil has a first field coil part connected to the capacitor in parallel and a second field coil part connected between the other end of the rectifier element and the other end of the capacitor, and the first field coil part is disposed on a side closer to a main magnetic pole of the rotor core than to the second field coil part. 4. The field winding type rotary machine according to claim 1 , wherein the rotor field coil has a first field coil part connected to the capacitor in parallel and a second field coil part connected between the other end of the rectifier element and the other end of the capacitor, and the first field coil part is disposed on a side farther from the stator core than from the second field coil part. 5. The field winding type rotary machine according to claim 1 , wherein the rotor core has a plurality of main magnetic poles and an auxiliary pole arranged between the main magnetic poles, and includes a magnet provided in the auxiliary pole and magnetized in a direction of canceling a leakage magnetic flux generated between the main magnetic poles in a radial direction. 6. A field winding type rotary machine, comprising: a stator having a stator core and a stator coil wound on the stator core; a rotor having a rotor core and a rotor field coil wound on the rotor core; a rectifier element connected between both ends of the rotor field coil; and a capacitor having one end connected to one end of the rectifier element and another end connected to any point of the rotor field coil, wherein the rotor field coil has a first field coil part connected to the capacitor in parallel and a second field coil part connected between the other end of the rectifier element and the other end of the capacitor, and the first field coil part is disposed on a side closer to a main magnetic pole of the rotor core than to the second field coil part. 7. A field winding type rotary machine, comprising: a stator having a stator core and a stator coil wound on the stator core; a rotor having a rotor core and a rotor field coil wound on the rotor core; a rectifier element connected between both ends of the rotor field coil; and a capacitor having one end connected to one end of the rectifier element and another end connected to any point of the rotor field coil, wherein the rotor field coil has a first field coil part connected to the capacitor in parallel and a second field coil part connected between the other end of the rectifier element and the other end of the capacitor, and the first field coil part is disposed on a side farther from the stator core than from the second field coil part. 8. A field winding type rotary machine, comprising: a stator having a stator core and a stator coil wound on the stator core; a rotor having a rotor core and a rotor field coil wound on the rotor core; a rectifier element connected between both ends of the rotor field coil; and a capacitor having one end connected to one end of the rectifier element and another end connected to any point of the rotor field coil, wherein the rotor field coil has a first field coil part connected to the capacitor in parallel and a second field coil part connected between the other end of the rectifier element and the other end of the capacitor, and the first field coil part is disposed on a side farther from a main magnetic pole of the rotor core than from the second field coil part. 9. A field winding type rotary machine, comprising: a stator having a stator core and a stator coil wound on the stator core; a rotor having a rotor core and a rotor field coil wound on the rotor core; a rectifier element connected between both ends of the rotor field coil; and a capacitor having one end connected to one end of the rectifier element and another end connected to any point of the rotor field coil, wherein the rotor field coil has a first field coil part connected to the capacitor in parallel and a second field coil part connected between the other end of the rectifier element and the other end of the capacitor, and the first field coil part is disposed on a side closer to the stator core than to the second field coil part.
Assignees
Inventors
Classifications
Rotor cores with slots for windings · CPC title
with brushless excitation · CPC title
using semiconductor devices only · CPC title
in slots · CPC title
Suppressors associated with the rotor · CPC title
Patent family
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11050330B2 cover?
- A field winding type rotary machine includes a stator having a stator core and a stator coil wound on the stator core, a rotor having a rotor core and a rotor field coil wound on the rotor core, and a rectifier element connected between both ends of the rotor field coil. The field winding type rotary machine includes a capacitor having a first terminal connected to an anode terminal of the rect…
- Who is the assignee on this patent?
- Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification H02K19/12. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 29 2021 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).