Invention Grant
- Patent Title: Supply current management under voltage saturated motor current control
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Application No.: US16695910Application Date: 2019-11-26
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Publication No.: US11218099B2Publication Date: 2022-01-04
- Inventor: Prerit Pramod , Zhe Zhang , Krishna MPK Namburi
- Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
- Applicant Address: US MI Saginaw
- Assignee: STEERING SOLUTIONS IP HOLDING CORPORATION
- Current Assignee: STEERING SOLUTIONS IP HOLDING CORPORATION
- Current Assignee Address: US MI Saginaw
- Agency: Dickinson Wright PLLC
- Main IPC: H02P21/00
- IPC: H02P21/00 ; H02P29/02

Abstract:
A system and method for improved anti-windup that minimizes supply current draw under voltage saturated current control operation of synchronous motor drives are provided. The system and method use a voltage limiting module configured to receive a pre-limit voltage command and generate a post-limit voltage command when the motor control system reaches configured threshold; and an anti-windup module configured to determine a voltage difference between the post-limit and pre-limit voltage commands, and compute an anti-windup feedback current using the voltage difference and compensation gains selected to minimize supply current. The compensation gains comprise a gain matrix of values selected to move a motor current trajectory toward a null motor current vector, and the anti-windup module multiplies the gain matrix values by the voltage difference. The anti-windup feedback current and an input current command are then added and provided as an input to the controller.
Public/Granted literature
- US20210159827A1 SUPPLY CURRENT MANAGEMENT UNDER VOLTAGE SATURATED MOTOR CURRENT CONTROL Public/Granted day:2021-05-27
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