Control device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 2, 2010
Grant Date -
Jan 22, 2009
app pub date -
Mar 28, 2006
filing date -
Mar 31, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control device sets parameters “n”, “ad”, “pd”, “aq”, “pq” and the like of a motor parameter setting unit, corrects a d-axis current command value outputted from a d-axis current instructing unit and a q-axis current command value outputted from q-axis current instructing unit based on these parameters of the motor parameter setting unit, on a detection result of a rotation angle detection unit, and makes a (6×n)f sine component, (6×n)f cosine component, (6×(n+1))f sine component, and (6×(n+1))f cosine component of torque to zero. In such a way, 6×n and 6×(n+1) ripple components and the like, which are generated in a motor provided in elevator equipment or the like, are suppressed, and a torque ripple of the motor is reduced to a large extent.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully