Method for driving a single-phase electric motor and single-phase electric motor
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United States of America Patent
Stats
-
Oct 8, 2024
Grant Date -
Dec 29, 2022
app pub date -
Nov 29, 2019
filing date -
Nov 29, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for driving a single-phase electric motor includes switching drive electronics to a first on-state during a first on-time interval of a pulse width modulation period, switching the drive electronics to a second on-state during a second on-time interval of the pulse width modulation period, switching the drive electronics to an off-state between the first and second on-time intervals, and measuring the phase current with a current sensor. The first and the second on-time interval of one pulse width modulation period are provided with different interval lengths if a defined effective duty cycle is lower than a first duty cycle threshold value so that one of the first and the second on-time interval has an interval length which is equal to or larger than a defined minimum on-time interval length. The phase current is measured during the first and/or second on-time interval with the defined minimum on-time interval length.
First Claim
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International Classification(s)
- 2019 Application Filing Year
- H02K Class
- 3215 Applications Filed
- 2232 Patents Issued To-Date
- 69.43 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H02K Class
- 0 % this patent is cited more than
- 1 Age
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