Vehicle and power supply system of vehicle
US-12140944-B2 · Nov 12, 2024 · US
Vehicle auxiliary power supply
US9744855B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9744855-B2 |
| Application number | US-201114119125-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 30, 2011 |
| Priority date | Jun 30, 2011 |
| Publication date | Aug 29, 2017 |
| Grant date | Aug 29, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A vehicle auxiliary power supply that is mounted on a railway vehicle, includes a three-phase inverter circuit that converts DC power or AC power input from an overhead line to desired AC power to supply the AC power to a load, and is connected in parallel with a VVVF inverter device that drives a propulsion motor, wherein a blocking diode that prevents backflow from a side of the three-phase inverter circuit to a side of the overhead line is provided between the overhead line and the three-phase inverter circuit, and a SiC Schottky barrier diode is applied to the blocking diode.
First claim
Opening claim text (preview).
The invention claimed is: 1. A vehicle auxiliary power supply that is mounted on a railway vehicle, includes an inverter circuit that converts power input from an overhead line to desired AC power to supply the AC power to a load, and is connected in parallel with an inverter device that drives a propulsion motor, wherein a blocking diode that prevents backflow from a side of the inverter circuit to a side of the overhead line and a filter reactor that smooths an input voltage to the inverter circuit are provided between the overhead line and the inverter circuit, and the blocking diode is a Schottky barrier diode formed of a wide bandgap semiconductor, wherein a snubber circuit is provided in parallel with the blocking diode, and the snubber circuit includes a first resistor in parallel with a series connection of a second resistor and a capacitor. 2. The vehicle auxiliary power supply according to claim 1 , wherein the wide bandgap semiconductor is a semiconductor using silicon carbide, a gallium nitride-based material, or diamond. 3. A vehicle auxiliary power supply that is mounted on a railway vehicle and includes an inverter circuit that converts power input from an overhead line to desired AC power to supply the AC power to a load, wherein a blocking diode that prevents backflow from a side of the inverter circuit to a side of the overhead line and a filter reactor that smooths an input voltage to the inverter circuit are provided between the overhead line and the inverter circuit, and the blocking diode is a Schottky barrier diode formed of a wide bandgap semiconductor, wherein a snubber circuit is provided in parallel with the blocking diode, and the snubber circuit includes a first resistor in parallel with a series connection of a second resistor and a capacitor. 4. The vehicle auxiliary power supply according to claim 3 , wherein the wide bandgap semiconductor is a semiconductor using silicon carbide, a gallium nitride-based material, or diamond.
Assignees
Inventors
Classifications
Cross-Sectional Technologies · mapped topic
polyphase motors · CPC title
to auxiliary motors, e.g. for pumps, compressors · CPC title
DC to AC converters · CPC title
relating to the isolation, e.g. ground fault or leak current · CPC title
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Frequently asked questions
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- What does patent US9744855B2 cover?
- A vehicle auxiliary power supply that is mounted on a railway vehicle, includes a three-phase inverter circuit that converts DC power or AC power input from an overhead line to desired AC power to supply the AC power to a load, and is connected in parallel with a VVVF inverter device that drives a propulsion motor, wherein a blocking diode that prevents backflow from a side of the three-phase i…
- Who is the assignee on this patent?
- Tanaka Takeshi, Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification B60L1/00. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 29 2017 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).