Out-of-group operations for multicar hoistway systems
US-2018022573-A1 · Jan 25, 2018 · US
Paralleled active front-end rectifiers with negligible common-mode
US2016352249A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016352249-A1 |
| Application number | US-201615137641-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 25, 2016 |
| Priority date | Jun 1, 2015 |
| Publication date | Dec 1, 2016 |
| Grant date | — |
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Abstract
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Embodiments herein relate to a rectifier to supply a DC bus that in turn supplies voltage to a converter that drives a motor and configuring the rectifier to minimize or eliminate common mode voltage between the DC bus and the AC source. In this way, the embodiments herein relate to timing and switching a power from the rectifier to the DC bus.
First claim
Opening claim text (preview).
1 . A three-phase paralleled active front-end rectifier, comprising: two voltage-source-rectifiers connected in parallel to an alternating current power side through a coupling inductor and connected directly to a direct current power side, wherein the three-phase paralleled active front-end rectifier is configured to transfer alternating current power with a zero common-mode from the alternating current power side to the direct current power side by regulating a direct current voltage of the three-phase paralleled active front-end rectifier and controlling the alternating current power. 2 . The three-phase paralleled active front-end rectifier of claim 1 , wherein each of the two voltage-source-rectifiers includes three pairs of switches connected directly to the direct current power side and through coupling inductor in the alternating current side. 3 . The three-phase paralleled active front-end rectifier of claim 1 , wherein the coupling inductor includes three pairs of windings and is configured to control a circulation current of the three-phase paralleled active front-end rectifier. 4 . The three-phase paralleled active front-end rectifier of claim 1 , wherein the coupling inductor includes three inductors, each of which includes one pair of windings. 5 . The three-phase paralleled active front-end rectifier of claim 1 , wherein the alternating current power side includes three alternating current power sources. 6 . The three-phase paralleled active front-end rectifier of claim 1 , included in a ropeless elevator system. 7 . A method for controlling three-phase paralleled active front-end rectifier, comprising: transferring, by the three-phase paralleled active front-end rectifier, alternating current power with a zero common-mode from an alternating current power side through two voltage-source-rectifiers of the three-phase paralleled active front-end rectifier to an alternating current power side, wherein the two voltage-source-rectifiers are connected through a coupling inductor to the alternating current power side and connected directly to the direct current power side; regulating, by the three-phase paralleled active front-end rectifier, a direct current voltage of the three-phase paralleled active front-end rectifier; and controlling, by the three-phase paralleled active front-end rectifier, the alternating current power via alternating current waveforms. 8 . The method of claim 7 , wherein each of the two voltage-source-rectifiers includes three pairs of switches connected directly to the direct current power side and through coupling inductor in the alternating current side. 9 . The method of claim 7 , further comprising: controlling a circulation current of the three-phase paralleled active front-end rectifier by three pairs of windings of the coupling inductor. 10 . The method of claim 7 , wherein the coupling inductor includes three inductors, each of which includes one pair of windings. 11 . The method of claim 7 , wherein the alternating current power side includes three alternating current power sources. 12 . The method of claim 7 , wherein the three-phase paralleled active front-end rectifier is included in a ropeless elevator system.
Assignees
Inventors
Classifications
for lateral transfer of car or frame, e.g. between vertical hoistways or to/from a parking position · CPC title
- H02M7/219Primary
in a bridge configuration · CPC title
actuated by an electrical linear motor (in the counterweight B66B17/12) · CPC title
- H02M7/493Primary
the static converters being arranged for operation in parallel · CPC title
in a bridge configuration · CPC title
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- What does patent US2016352249A1 cover?
- Embodiments herein relate to a rectifier to supply a DC bus that in turn supplies voltage to a converter that drives a motor and configuring the rectifier to minimize or eliminate common mode voltage between the DC bus and the AC source. In this way, the embodiments herein relate to timing and switching a power from the rectifier to the DC bus.
- Who is the assignee on this patent?
- Otis Elevator Co
- What technology area does this patent fall under?
- Primary CPC classification H02M7/219. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Dec 01 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).