- Patent Title: Method for reducing regenerated energy and reversal stress in a reciprocating load powered by an electric motor by modulating motor speed using a variable frequency drive and variable frequency drive provided for performing the method
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Application No.: US17861200Application Date: 2022-07-09
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Publication No.: US11863113B2Publication Date: 2024-01-02
- Inventor: Steve Michael Meyer , Per Maersk Jørgensen
- Applicant: Danfoss Power Electronics A/S
- Applicant Address: DK Grästen
- Assignee: DANFOSS POWER ELECTRONICS A/S
- Current Assignee: DANFOSS POWER ELECTRONICS A/S
- Current Assignee Address: DK Grasten
- Agency: McCormick, Paulding & Huber PLLC
- Priority: DE 2021118075.9 2021.07.13
- Main IPC: H02P9/04
- IPC: H02P9/04 ; G05D19/02
Abstract:
The present disclosure refers to a method for controlling the speed of a reciprocating load motor, wherein the motor speed is a function of two input variables, namely a user defined speed set-point and a load dependent input variable. According to the disclosure, the load dependent input variable is a function of the motor current. The disclosure also refers to a variable frequency drive for controlling the speed of a reciprocating load motor, wherein the drive is programmed to perform the presently described method.
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