公开(公告)号：US10666131B2

公开(公告)日：2020-05-26

申请号：US16211551

申请日：2018-12-06

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Yoshihiro Konishi ,  Yeh-Hsiang Ho

IPC: H02M7/5387 ,  H02M1/38 ,  H02M1/00

Abstract: A dead-time voltage compensation apparatus and a dead-time voltage compensation method are provided. The method includes: converting a DC voltage of an input end of a single-phase DC-AC inverter into a unipolar AC voltage; calculating first to third current values based on a first inductor current value of a inductor, calculating first voltage compensation amounts of a first dead-time and a third dead-time of an AC voltage and a second inductor current value of the AC voltage based on polarities of the first to third current values, calculating fourth to sixth current values based on the second inductor current value, calculating second voltage compensation amounts of a second dead-time and a fourth dead-time of the AC voltage based on polarities of the fourth to sixth current values, and compensating a control reference signal of a processor based on the first and second voltage compensation amounts.

公开(公告)号：US20200127556A1

公开(公告)日：2020-04-23

申请号：US16211551

申请日：2018-12-06

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Yoshihiro Konishi ,  Yeh-Hsiang Ho

IPC: H02M1/38 ,  H02M7/5387

Abstract: A dead-time voltage compensation apparatus and a dead-time voltage compensation method are provided. The method includes: converting a DC voltage of an input end of a single-phase DC-AC inverter into a unipolar AC voltage; calculating first to third current values based on a first inductor current value of a inductor, calculating first voltage compensation amounts of a first dead-time and a third dead-time of an AC voltage and a second inductor current value of the AC voltage based on polarities of the first to third current values, calculating fourth to sixth current values based on the second inductor current value, calculating second voltage compensation amounts of a second dead-time and a fourth dead-time of the AC voltage based on polarities of the fourth to sixth current values, and compensating a control reference signal of a processor based on the first and second voltage compensation amounts.

公开(公告)号：US11757375B2

公开(公告)日：2023-09-12

申请号：US17719789

申请日：2022-04-13

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Wan-Pei Chen ,  Yoshihiro Konishi ,  Kuan-Wen Chen ,  Yeh-Hsiang Ho ,  Wan-Ju Ho

IPC: H02M7/5387 ,  H02M1/00 ,  H02M1/14

CPC classification number: H02M7/53871 ,  H02M1/0009 ,  H02M1/14 ,  H02M7/53873

Abstract: A DC-AC inverter system using a state observer and a control method thereof are provided. The control method of the DC-AC inverter system includes the following steps. The state observer outputs a filter-capacitor-current estimation value at a next sampling time according to a DC link voltage at a current sampling time and a filter-capacitor-voltage actual value at the current sampling time. The filter-inductor-current estimation value at the next sampling time is compared with the filter-capacitor-current estimation value at the next sampling time to obtain a load current estimation value at the next sampling time. An inductor voltage estimator outputs a filter-inductor-voltage estimation value at the next sampling time according to the load current estimation value at the next sampling time. A feed-forward control is performed according to the filter-inductor-voltage estimation value at the next sampling time.