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Patent Agency Ranking
公开(公告)号：US20250030352A1
公开(公告)日：2025-01-23
申请号：US18224829
申请日：2023-07-21
Applicant: Eaton Intelligent Power Limited
Inventor： Hua Qiang Li , Yaojin Mo , Zhe Zhang , Jimmy Qi
Abstract: In one aspect, a power converter includes: an energy storage apparatus; an inverter electrically coupled to the energy storage apparatus; and a voltage boost system configured to: determine a modulation index based on a DC voltage of the energy storage apparatus and a target output voltage of the inverter; and determine whether the target output voltage is in a voltage boost region based on the modulation index; if the target output voltage is in the voltage boost region: determine an adjustment value based on the modulation index; and adjust one or more of the target output voltage and an associated output voltage phase angle based on the adjustment value.
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公开(公告)号：US11444562B2
公开(公告)日：2022-09-13
申请号：US16801655
申请日：2020-02-26
Applicant: Eaton Intelligent Power Limited
Inventor： Yaojin Mo , Huaqiang Li , Jimmy Qi , Tony Zhao , Hao Cai
Abstract: In one aspect, a system for determining an initial angular position of a rotor of a synchronous machine includes a motor driver module configured to provide a motor driver voltage signal to the synchronous machine, the motor driver voltage signal being sufficient to induce an electrical current in the synchronous machine; and a rotor position determination module configured to receive an indication of the current generated in the machine and to determine the initial position of the rotor based on the indication of the current generated in the machine. The motor driver voltage signal includes at least a first portion, a second portion, and a third portion, the first portion has a first non-zero voltage during a first temporal duration, the second portion has a second non-zero voltage during a second temporal duration, and the third portion has a substantially zero voltage during a third temporal duration, the first portion has a first polarity and the second portion has a second polarity that is opposite to the first polarity, and the first temporal duration and the second temporal duration are different.
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公开(公告)号：US11843331B2
公开(公告)日：2023-12-12
申请号：US17887859
申请日：2022-08-15
Applicant: Eaton Intelligent Power Limited
Inventor： Yaojin Mo , Huaqiang Li , Jimmy Qi , Tony Zhao , Hao Cai
Abstract: A system for determining an initial angular position of a rotor of a synchronous machine includes a motor driver module configured to provide a motor driver voltage signal to the synchronous machine, the motor driver voltage signal being sufficient to induce an electrical current in the synchronous machine; and a rotor position determination module configured to receive an indication of the current generated in the machine and to determine the initial position of the rotor based on the indication of the current generated in the machine.
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公开(公告)号：US20230049780A1
公开(公告)日：2023-02-16
申请号：US17887859
申请日：2022-08-15
Applicant: Eaton Intelligent Power Limited
Inventor： Yaojin Mo , Huaqiang Li , Jimmy Qi , Tony Zhao , Hao Cai
Abstract: In one aspect, a system for determining an initial angular position of a rotor of a synchronous machine includes a motor driver module configured to provide a motor driver voltage signal to the synchronous machine, the motor driver voltage signal being sufficient to induce an electrical current in the synchronous machine; and a rotor position determination module configured to receive an indication of the current generated in the machine and to determine the initial position of the rotor based on the indication of the current generated in the machine. The motor driver voltage signal includes at least a first portion, a second portion, and a third portion, the first portion has a first non-zero voltage during a first temporal duration, the second portion has a second non-zero voltage during a second temporal duration, and the third portion has a substantially zero voltage during a third temporal duration, the first portion has a first polarity and the second portion has a second polarity that is opposite to the first polarity, and the first temporal duration and the second temporal duration are different.
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公开(公告)号：US20200313591A1
公开(公告)日：2020-10-01
申请号：US16801655
申请日：2020-02-26
Applicant: Eaton Intelligent Power Limited
Inventor： Yaojin Mo , Huaqiang Li , Jimmy Qi , Tony Zhao , Hao Cai
Abstract: In one aspect, a system for determining an initial angular position of a rotor of a synchronous machine includes a motor driver module configured to provide a motor driver voltage signal to the synchronous machine, the motor driver voltage signal being sufficient to induce an electrical current in the synchronous machine; and a rotor position determination module configured to receive an indication of the current generated in the machine and to determine the initial position of the rotor based on the indication of the current generated in the machine. The motor driver voltage signal includes at least a first portion, a second portion, and a third portion, the first portion has a first non-zero voltage during a first temporal duration, the second portion has a second non-zero voltage during a second temporal duration, and the third portion has a substantially zero voltage during a third temporal duration, the first portion has a first polarity and the second portion has a second polarity that is opposite to the first polarity, and the first temporal duration and the second temporal duration are different.
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