Impulse voltage generation device
US-9197201-B2 · Nov 24, 2015 · US
Method and apparatus for measuring rotor resistance of induction motor
US9523739B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9523739-B2 |
| Application number | US-201313846732-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 18, 2013 |
| Priority date | Dec 10, 2012 |
| Publication date | Dec 20, 2016 |
| Grant date | Dec 20, 2016 |
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Abstract
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The present application discloses a method and an apparatus for measuring a rotor resistance of an induction motor, which method comprises: injecting a first voltage step signal into a test phase of the induction motor when the induction motor is at standstill; measuring and recording a current value I 0+ at an initial moment of the first voltage step signal; and calculating the rotor resistance R r of the induction motor based on a first current value I s1 , a second current value I s2 and the current value I 0+ at the initial moment, the first current value I s1 being equal to a steady-state current value corresponding to a voltage value before a step of the first voltage step signal, and the second current value I s2 being equal to a steady-state current value corresponding to a voltage value after the step of the first voltage step signal.
First claim
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What is claimed is: 1. A method for measuring a rotor resistance of an induction motor, comprising: injecting a first voltage step signal into a test phase of the induction motor when the induction motor is at standstill; measuring and recording a current value I 0+ at an initial moment of the first voltage step signal, a first current value I s1 and a second current value I s2 , the first current value I s1 being equal to a steady-state current value corresponding to a volta…
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- G01R31/34Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US9523739B2 cover?
- The present application discloses a method and an apparatus for measuring a rotor resistance of an induction motor, which method comprises: injecting a first voltage step signal into a test phase of the induction motor when the induction motor is at standstill; measuring and recording a current value I 0+ at an initial moment of the first voltage step signal; and calculating the rotor resistan…
- Who is the assignee on this patent?
- Delta Electronics Shanghai Co
- What technology area does this patent fall under?
- Primary CPC classification G01R31/34. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 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).