Invention Grant
- Patent Title: Electric motor current controller with negative sequence harmonic suppression
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Application No.: US14825712Application Date: 2015-08-13
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Publication No.: US10348229B2Publication Date: 2019-07-09
- Inventor: Raymond B Sepe, Jr. , Steven Bastien
- Applicant: ELECTRO STANDARDS LABORATORIES
- Applicant Address: US RI Cranston
- Assignee: ELECTRO STANDARDS LABORATORIES
- Current Assignee: ELECTRO STANDARDS LABORATORIES
- Current Assignee Address: US RI Cranston
- Agency: IP Authority, LLC
- Agent Ramraj Soundararajan
- Main IPC: G01R31/02
- IPC: G01R31/02 ; H02P21/00 ; H02P29/50

Abstract:
A current controller is provided having a positive sequence controller and a negative sequence controller, where error signals operated on by the positive sequence controller are transformed into a negative sequence reference frame and input to the negative sequence controller. A current controller is also provided having a positive sequence controller, a negative sequence controller, and one or more delay state feedbacks to counter control loop delays, where the delay state feedbacks provide high bandwidth, low current overshoot, small current rise time and good current stability margins. A current controller is also disclosed having a positive sequence controller, a negative sequence controller, and one or more cross coupled gains between a d-axis and a q-axis, where the cross coupled gains are proportional to the speed of a motor associated with the current controller.
Public/Granted literature
- US20160065108A1 Electric Motor Current Controller with Negative Sequence Harmonic Suppression Public/Granted day:2016-03-03
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