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公开(公告)号：US20200303943A1
公开(公告)日：2020-09-24
申请号：US16357653
申请日：2019-03-19
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Lei Jin , Haihui Lu , Karthik Palaniappan , Ahmed S. Mohamed Sayed Ahmed
Abstract: For grid-connected power converter control, a method estimates a d-axis grid voltage from a d-axis reference current modified with a d-axis current, and a q-axis current modified with a filter inductive reactance. The method generates a q-axis grid voltage from a direct current (DC) voltage input modified with the DC bus voltage modified with a notch filter to balance the voltage input and further reduced with the q-axis current. The method modifies the estimated d-axis grid voltage and the q-axis grid voltage by selectively removing second-order harmonics. The method further determines a d-axis voltage output and a q-axis voltage output as a function of the modified estimated d-axis grid voltage and the modified q-axis grid voltage.
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公开(公告)号：US10862332B2
公开(公告)日：2020-12-08
申请号：US16357653
申请日：2019-03-19
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Lei Jin , Haihui Lu , Karthik Palaniappan , Ahmed S. Mohamed Sayed Ahmed
Abstract: For grid-connected power converter control, a method estimates a d-axis grid voltage from a d-axis reference current modified with a d-axis current, and a q-axis current modified with a filter inductive reactance. The method generates a q-axis grid voltage from a direct current (DC) voltage input modified with the DC bus voltage modified with a notch filter to balance the voltage input and further reduced with the q-axis current. The method modifies the estimated d-axis grid voltage and the q-axis grid voltage by selectively removing second-order harmonics. The method further determines a d-axis voltage output and a q-axis voltage output as a function of the modified estimated d-axis grid voltage and the modified q-axis grid voltage.
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