AC-to-AC power inverter apparatus functioning without smoothing capacitor, and control method thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 2, 1996
Grant Date -
N/A
app pub date -
Oct 29, 1993
filing date -
Oct 30, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An AC-to-AC power inverter apparatus and a control method thereof are described in which the effects of AC ripple contained in an intermediate DC voltage produced in the apparatus are eliminated from the output AC voltage, thereby enabling the inverter apparatus to function without a large-capacitance smoothing capacitor. The amplitude of the DC voltage, including the AC ripple amplitude, is detected, the amplitude of a reference AC waveform is divided by the detected amplitude, and the value of the resultant ratio is applied to control the duty factor of a PWM signal, which controls a DC-to-AC inverter circuit. Changes in the DC voltage due to AC ripple are thereby prevented from affecting the output AC voltage obtained, which has an average value waveform corresponding to the reference waveform.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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