Invention Grant
- Patent Title: Laundry treating machine and method for operating a laundry treating machine
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Application No.: US17262027Application Date: 2019-07-25
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Publication No.: US11750137B2Publication Date: 2023-09-05
- Inventor: Enrico Marson , Gilberto Pin , Paolo Posa , Luca Della Schiava
- Applicant: Electrolux Appliances Aktiebolag
- Applicant Address: SE Stockholm
- Assignee: Electrolux Appliances Aktiebolag
- Current Assignee: Electrolux Appliances Aktiebolag
- Current Assignee Address: SE Stockholm
- Agency: RatnerPrestia
- Priority: EP 185870 2018.07.26
- International Application: PCT/EP2019/070031 2019.07.25
- International Announcement: WO2020/021005A 2020.01.30
- Date entered country: 2021-01-21
- Main IPC: H02P27/08
- IPC: H02P27/08 ; H02P21/22 ; D06F34/10 ; D06F23/02 ; D06F37/30 ; H02P21/14 ; D06F105/46 ; D06F103/46 ; D06F103/24

Abstract:
A laundry machine having a casing, a drum a motor to rotate the drum, and an inverter-based apparatus to control the motor. The inverter-based apparatus comprises: an input stage configured to convert alternating mains voltage to rectified DC voltage, an electrolytic capacitor-less inverter configured to generate output currents to feed to the electric moto based on duty cycles of switching signals, a DC-link connecting the electrolytic capacitor-less inverter to the input stage and crossed by DC-link currents from/towards the electrolytic capacitor-less inverter, a DC-link capacitor connected to the DC-link, a regulator system configured to control duty cycles of switching signals based on determined/estimated motor values indicating a controlled parameter of said motor, and a motor reference value associated to the controlled parameter of the motor, and an active voltage limiter unit configured to regulate the motor reference value to limit the DC-link capacitor voltage within a predetermined voltage range.
Public/Granted literature
- US20210297030A1 LAUNDRY TREATING MACHINE AND METHOD FOR OPERATING A LAUNDRY TREATING MACHINE Public/Granted day:2021-09-23
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