Wireless power supply unit and power reception module
US-2022149660-A1 · May 12, 2022 · US
Non-contact power supply system and transport system
US12525787B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12525787-B2 |
| Application number | US-202218726069-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 26, 2022 |
| Priority date | Feb 14, 2022 |
| Publication date | Jan 13, 2026 |
| Grant date | Jan 13, 2026 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
In a non-contact power supply system, each of a plurality of non-contact power supply devices includes a filter circuit connected to an inverter to convert power supplied from a power source into AC power and including a reactor and capacitors. The non-contact power supply system includes an electrostatic coupler to electrostatically couple one non-contact power supply device to another non-contact power supply device. The electrostatic coupler includes two capacitors electrically connected in parallel, and a different-phase coil between the filter circuit of the one non-contact power supply device and the two capacitors. The different-phase coil includes an inductance component when a short-circuit or a ground fault occurs.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A non-contact power supply system comprising: a plurality of non-contact power supply devices each including a filter circuit connected to an inverter to convert power supplied from a power source into AC power and including a reactor and a capacitor; an electrostatic coupler to electrostatically couple one non-contact power supply device to another non-contact power supply device and including two capacitors electrically connected in parallel; and a different-phase coil between the filter circuit of the one non-contact power supply device and the two capacitors of the electrostatic coupler and including an inductance component when a short-circuit or a ground fault occurs. 2 . The non-contact power supply system according to claim 1 , wherein each of the plurality of non-contact power supply devices is configured to supply a high-frequency current; and the different-phase coil includes an inductance component of the high-frequency current. 3 . The non-contact power supply system according to claim 1 , further comprising a plurality of feeders provided along a track rail on which a traveling vehicle travels; wherein each of the plurality of non-contact power supply devices is configured to supply power in a non-contact manner to the traveling vehicle traveling on the track rail; each of the plurality of non-contact power supply devices includes an area to provide AC power; and each of the plurality of feeders is provided in a corresponding one of the areas to provide AC power. 4 . The non-contact power supply system according to claim 1 , further comprising a switch to switch a coupling state and a non-coupling state of electrostatic coupling between the one non-contact power supply device and the other non-contact power supply device. 5 . A transport system comprising: the non-contact power supply system according to claim 1 ; and a traveling vehicle to travel by receiving the power transmitted from the non-contact power supply system.
Assignees
Inventors
Classifications
Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway · CPC title
Power rails · CPC title
- H02J50/40Primary
using two or more transmitting or receiving devices (H02J50/50 takes precedence) · CPC title
- H02J50/12Primary
of the resonant type · CPC title
without mechanical contact between the collector and the power supply line · CPC title
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Frequently asked questions
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- What does patent US12525787B2 cover?
- In a non-contact power supply system, each of a plurality of non-contact power supply devices includes a filter circuit connected to an inverter to convert power supplied from a power source into AC power and including a reactor and capacitors. The non-contact power supply system includes an electrostatic coupler to electrostatically couple one non-contact power supply device to another non-con…
- Who is the assignee on this patent?
- Murata Machinery Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02J50/40. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 13 2026 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).