Invention Grant
- Patent Title: Voltage balance systems and methods for multilevel converters
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Application No.: US17619397Application Date: 2019-06-17
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Publication No.: US12267012B2Publication Date: 2025-04-01
- Inventor: Zheyu Zhang , Tomas Sadilek , Ramanujam Ramabhadran , Hao Tu
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: Armstrong Teasdale LLP
- International Application: PCT/US2019/037508 WO 20190617
- International Announcement: WO2020/256690 WO 20201224
- Main IPC: H02J7/00
- IPC: H02J7/00 ; H02J7/14 ; H02M1/00 ; H02M3/158

Abstract:
A multilevel converter system is provided. The system includes a converter and a converter controller interfaced with the converter. The converter controller includes a voltage loop, a current loop, and a voltage compensation loop. The voltage loop is configured to receive first and second voltages from the first and second segments of the converter and a reference voltage. The current loop is configured to receive a current output of the converter, a reference current, and a balancing reference current. The voltage compensation loop is configured to receive the first and second voltages and a sign signal. The converter controller is configured to generate first and second pulse-width modulation (PWM) signals using output signals from the current loop and the output compensation signals from the voltage compensation loop. The PWM signals are configured to control the switches of the converter and to balance the first voltage with the second voltage.
Public/Granted literature
- US20220311337A1 VOLTAGE BALANCE SYSTEMS AND METHODS FOR MULTILEVEL CONVERTERS Public/Granted day:2022-09-29
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