Power control system and method for motor preheating
US-2024125829-A1 · Apr 18, 2024 · US
Diagnostics for systems including variable frequency motor drives
US9448271B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9448271-B2 |
| Application number | US-201414479485-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 8, 2014 |
| Priority date | Sep 6, 2013 |
| Publication date | Sep 20, 2016 |
| Grant date | Sep 20, 2016 |
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Abstract
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One embodiment is a diagnostic method for a system including setting a first diagnostic code based upon a condition of a DC bus of a variable frequency drive during a first drive state, setting at least one additional diagnostic code based upon a condition of at least one motor phase current during a second drive state, outputting first diagnostic information indicating a malfunction of the variable frequency drive if the first diagnostic code indicates a first error, and outputting second diagnostic information indicating a malfunction of a motor or a connector coupling the motor and the drive if the at least one additional diagnostic code indicates a second error.
First claim
Opening claim text (preview).
What is claimed is: 1. A diagnostic method for a system comprising a variable frequency drive, a motor structured to drive a mechanical load, a connector electrically coupling the variable frequency drive and the motor, and a controller structured to control operation of the variable frequency drive, the variable frequency drive including an inrush relay and a power factor correction (PFC) circuit operatively coupled with a DC bus and an inverter operatively coupled with the DC bus…
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- G01R31/343Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Electricity · mapped topic
Physics · mapped topic
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- What does patent US9448271B2 cover?
- One embodiment is a diagnostic method for a system including setting a first diagnostic code based upon a condition of a DC bus of a variable frequency drive during a first drive state, setting at least one additional diagnostic code based upon a condition of at least one motor phase current during a second drive state, outputting first diagnostic information indicating a malfunction of the var…
- Who is the assignee on this patent?
- Trane Int Inc
- What technology area does this patent fall under?
- Primary CPC classification G01R31/343. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 20 2016 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).