Invention Grant
- Patent Title: Method and apparatus for controlling a cascaded inverter circuit and an electric machine
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Application No.: US16031632Application Date: 2018-07-10
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Publication No.: US10826424B2Publication Date: 2020-11-03
- Inventor: Brian A. Welchko , Brent S. Gagas
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Quinn IP Law
- Main IPC: H02P27/08
- IPC: H02P27/08 ; H02M7/5395 ; H02P29/50 ; H02M1/38 ; H02M7/5387

Abstract:
A cascaded inverter system is described and includes an electric machine that is electrically connected in series between first and second inverters. A controller is in communication with the first and second inverters, and includes an executable instruction set. A first dead-time compensation term and a first voltage compensation term are determined based upon an initial phase current and a switching frequency for the first inverter, and a final first duty cycle is determined based thereon. Simultaneously, a second dead-time compensation term and a second voltage compensation term are determined based upon the inverted initial phase current and a switching frequency for the second inverter, and a final second duty cycle is determined based thereon. Operation of the first and second inverters are dynamically controlled based upon the final first duty cycle and the final second duty cycle, respectively.
Public/Granted literature
- US20200021226A1 METHOD AND APPARATUS FOR CONTROLLING A CASCADED INVERTER CIRCUIT AND AN ELECTRIC MACHINE Public/Granted day:2020-01-16
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