公开(公告)号：US20160118911A1

公开(公告)日：2016-04-28

申请号：US14566386

申请日：2014-12-10

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Shu-Syuan HUANG ,  Yoshihiro KONISHI

IPC: H02M7/5387

CPC classification number: H02M7/53871 ,  H02M2001/385

Abstract: A voltage compensating method is applied to a converter for converting a DC voltage into an AC voltage. The converter includes a first switch module, a second switch module, and an inductor. In a first dead time period, detect a first current value related to the inductor. According to the first current value, calculate a second current value and a third current value related to the inductor. According to polarities of the first, second and third current values, determine an output mode of the converter indicating a voltage compensation model after the first dead time period. According to the voltage compensation model, the first current value, and the second current value or the third current value, calculate a voltage compensation value. In a second dead time period, adjust a switching time for the first switch module and the second switch module according to the voltage compensation value.

Abstract translation: 将电压补偿方法应用于将直流电压转换为交流电压的转换器。 转换器包括第一开关模块，第二开关模块和电感器。 在第一死区时间内，检测与电感相关的第一电流值。 根据第一电流值，计算与电感器相关的第二电流值和第三电流值。 根据第一，第二和第三电流值的极性，确定在第一死区时间之后指示电压补偿模型的转换器的输出模式。 根据电压补偿模型，第一电流值和第二电流值或第三电流值计算电压补偿值。 在第二死区时间段，根据电压补偿值调整第一开关模块和第二开关模块的开关时间。

公开(公告)号：US20230208318A1

公开(公告)日：2023-06-29

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 ,  H02M1/14 ,  H02M1/00

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

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.