Control of an inverter pulse-width modulator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 13, 2007
Grant Date -
Dec 22, 2005
app pub date -
Jun 16, 2005
filing date -
Jun 17, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A modulation method for a pulse width modulator in the inverter section (11) of a frequency converter provided with a voltage intermediate circuit, said frequency converter comprising a single-phase mains bridge (10) to be connected to a single-phase alternating current source (U.sub.L, N), a direct-voltage intermediate circuit and a controlled load bridge (11) for feeding a three-phase alternating voltage (U.sub.R, U.sub.S, U.sub.T) of varying frequency and amplitude into a load (13), for controlling the semiconductor switches of the inverter section, in which low-capacitance direct-voltage intermediate circuit the waveform of the intermediate-circuit voltage in a normal load situation follows the absolute value of the supply network voltage, and wherein the modulation is implemented using an estimate value of the intermediate-circuit voltage to control the semiconductor switches of the inverter section.
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