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公开(公告)号：US20180309389A1
公开(公告)日：2018-10-25
申请号：US16021414
申请日：2018-06-28
Applicant: Murata Manufacturing Co.,Ltd.
Inventor： Shuichi Tagawa , Hiroyuki Yasui
IPC: H02M7/537
CPC classification number: H02M7/537 , H02M1/38 , H02M7/53873 , H02M2001/385
Abstract: In a power converter that converts a direct-current voltage into three-phase alternating-current voltages and outputs the three-phase alternating-current voltages to a power system. The power converter includes a microprocessor that sets a dead time during which high-side switching elements and low-side switching elements are simultaneously off, and carries out switching. Moreover, the microprocessor performs dq transformation using complex numbers of phase currents, and detects an amplitude value of d-axis current or q-axis current. The microprocessor changes a phase difference to reduce the amplitude value of d-axis current or q-axis current. The microprocessor then performs dead-time compensation on the basis of the resulting phase difference.
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2.发明授权公开(公告)号：US10148195B2
公开(公告)日：2018-12-04
申请号：US16021414
申请日：2018-06-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shuichi Tagawa , Hiroyuki Yasui
IPC: H02M7/537
Abstract: In a power converter that converts a direct-current voltage into three-phase alternating-current voltages and outputs the three-phase alternating-current voltages to a power system. The power converter includes a microprocessor that sets a dead time during which high-side switching elements and low-side switching elements are simultaneously off, and carries out switching. Moreover, the microprocessor performs dq transformation using complex numbers of phase currents, and detects an amplitude value of d-axis current or q-axis current. The microprocessor changes a phase difference to reduce the amplitude value of d-axis current or q-axis current. The microprocessor then performs dead-time compensation on the basis of the resulting phase difference.
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公开(公告)号：US10374435B2
公开(公告)日：2019-08-06
申请号：US15838912
申请日：2017-12-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroyuki Yasui
Abstract: A power conditioner includes an inverter unit and a control unit that outputs an error signal indicating a mounting error of a first or second current sensor based on a result of detection by the first current sensor and a result of detection by the second current sensor. When output from the inverter unit is varied by a first threshold value or higher during a first predetermined time period, the control unit outputs the error signal if a detection value of the first current sensor is not varied with the variation in the output from the inverter unit during a second predetermined time period and outputs the error signal if a detection value of the second current sensor is not varied with the variation in the output from the inverter unit during the second predetermined time period.
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公开(公告)号：US20180198284A1
公开(公告)日：2018-07-12
申请号：US15838912
申请日：2017-12-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroyuki Yasui
CPC classification number: H02J3/385 , F24F2005/0067 , H02J3/10 , H02J3/381 , H02J3/382 , H02M1/32 , H02M5/40 , H02M7/003 , H02M2001/0009 , H02S40/32 , Y02E10/563 , Y02E10/763
Abstract: A power conditioner includes an inverter unit and a control unit that outputs an error signal indicating a mounting error of a first or second current sensor based on a result of detection by the first current sensor and a result of detection by the second current sensor. When output from the inverter unit is varied by a first threshold value or higher during a first predetermined time period, the control unit outputs the error signal if a detection value of the first current sensor is not varied with the variation in the output from the inverter unit during a second predetermined time period and outputs the error signal if a detection value of the second current sensor is not varied with the variation in the output from the inverter unit during the second predetermined time period.
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