Method for Determining the Rotor Position of a Synchronous Machine Operated in Field-Oriented Manner
US-2015365028-A1 · Dec 17, 2015 · US
Motor control device
US9209727B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9209727-B2 |
| Application number | US-201414161384-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 22, 2014 |
| Priority date | Sep 27, 2010 |
| Publication date | Dec 8, 2015 |
| Grant date | Dec 8, 2015 |
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Abstract
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A motor control device includes a PWM signal generating unit comparing PWM command voltage and carrier wave with each other to generate pulse signal so that duty is increased or decreased in both directions of phase lag and phase lead with one phase within carrier period as reference regarding one phase of three-phase PWM signal. The unit generates pulse signal so that duty is increased or decreased in one of the directions with one phase as reference regarding another phase. The unit generates pulse signal so that duty is increased or decreased in direction reverse to the one direction with one phase as reference regarding the other phase. The unit generates three-phase PWM signal pattern so that a current detecting unit is capable of detecting two-phase current in synchronization with advent of two predetermined time-points within carrier wave period of PWM signal with first to third phases being normally fixed.
First claim
Opening claim text (preview).
What is claimed is: 1. A motor control device comprising: an inverter circuit including a plurality of switching elements connected into a three-phase bridge configuration, the inverter circuit being configured to convert a direct current into a three-phase alternate current to drive an electric motor; a current detecting element connected to a direct current side of the inverter circuit, thereby generating a signal corresponding to a current value; a PWM signal generating un…
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Classifications
Electricity · mapped topic
- H02P6/18Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9209727B2 cover?
- A motor control device includes a PWM signal generating unit comparing PWM command voltage and carrier wave with each other to generate pulse signal so that duty is increased or decreased in both directions of phase lag and phase lead with one phase within carrier period as reference regarding one phase of three-phase PWM signal. The unit generates pulse signal so that duty is increased or decr…
- Who is the assignee on this patent?
- Toshiba Kk
- What technology area does this patent fall under?
- Primary CPC classification H02P6/18. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 08 2015 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).