Samsung Display Co., Ltd.

Sungkyunkwan University

Hoon Gi Lee

Chung Yuen Won

Chang Gyun An

Tae Gyu Kim

Jong Hyun Choi

Mi Na Kim

Bong Yeon Choi

Jun Sin Yi

Kwang Su Na

Kyoung Min Kang

Min Soo Kim

Tae Hyun Kim

Hyun Ho Kim

Ki Nyeng Kang

Suk Hyung Kim

Dong Uk Kim

Young Woo Park

Chaun Gi Choi

Sang Hyun Choi

Min Joo Kim

Sang Hyun Han

The present invention relates to a control method which can perform, although a line-to-ground fault occurs in phase 1, coordinate transformation to separate the line-to-ground fault of phase 1 without unnecessary power outage by utilizing remaining normal phases, and apply transformed space vector pulse width modulation (SVPWM) to the converted coordinates, and the present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of controlling space vector pulse width modulation (SVPWM), which applies zero voltage to ground-faulted phase 1 and makes an inverter operate normally with only the remaining sound phases in order to prevent unnecessary loss generated as even other sound phases are blocked when a single line-to-ground fault occurs. According to the device, method, and computer program of the present invention for controlling space vector pulse width modulation using a 3-phase 4-leg inverter under a single line-to-ground fault in an islanded microgrid, since available voltage switching vectors are limited as phase 1, in which a line-to-ground fault has occurred, and phase n are restricted to have the same switching state, a novel coordinate transformation may be performed to compensate for the distortions generated therefrom, and since a novel space vector pulse width modulation (SVPWM) method that can be appropriately applied to the transformed coordinates can be provided, the problem of inducing loss of power and reducing the life of devices by unnecessarily cutting off even the sound phases can be solved even when a line-to-ground fault occurs.

Device for controlling space vector pulse width modulation using 3-phase 4-leg inverter under single line-to-ground faults in islanded microgrids and method thereof

The present disclosure relates to a display device. According to an embodiment of the present disclosure, a display device includes a supporter including a plurality of segments disposed to be spaced apart from each other and defining a plurality of holes between the plurality of segments, and a display panel disposed on the supporter. The display panel includes: an active element layer including a light emitting element and a thin film transistor for driving the light emitting element, an encapsulation layer disposed on the active element layer, a plurality of stress dispersion pattern disposed on the encapsulation layer to overlap the plurality of holes in a thickness direction, and an insulating layer disposed on the plurality of stress dispersion pattern and filling a plurality of holes defined between the plurality of stress dispersion pattern.

Display device which is capable of dispersing stress applied thereto

A display device includes a substrate, a first planarization layer disposed on a surface of the substrate, a second planarization layer disposed on a surface of the first planarization layer, a light-emitting element including a pixel electrode disposed on the surface of the second planarization layer, an emissive layer disposed on a surface of the pixel electrode, and a common electrode disposed on a surface of the emissive layer, a connection electrode disposed on the surface of the first planarization layer and electrically connecting the surface of the first planarization layer with an opposite surface of the first planarization layer through a first contact hole, and a light-absorbing layer disposed on the surface of the first planarization layer and covered by the second planarization layer.

Display device

A method for controlling a fault of a three phase four wire interlinking converter system according to one embodiment of the present disclosure comprises obtaining a first d-q-o coordinate plane based on an internal phase angle of output voltage produced from each phase of an inverter; converting the first d-q-o coordinate plane to a second d-q-o coordinate plane based on the o-axis configured differently from the first d-q-o coordinate plane; obtaining an output voltage vector for determining a fault location by performing d-q transform on the second d-q-o coordinate plane; determining occurrence of a fault and an area related to the fault based on the output voltage vector; and in the occurrence of the fault, allocating a zero voltage vector to the area related to the fault.

Method for controlling fault using switching technique of three phase four wire interlinking converter

A display device includes a substrate having an active area, a visible region located on the active area, and a non-visible region farther from the active area in a first direction than the visible region is; a first conductive layer disposed on the substrate; a first insulating layer disposed on the first conductive layer; a second conductive layer disposed on the first insulating layer; a first via layer disposed on the second conductive layer; a second insulating layer disposed on the first via layer; and a third conductive layer disposed on the second insulating layer and including touch signal lines. The visible region includes a line area where the second conductive layer is disposed, and a line-free area where the second conductive layer is not disposed. The third conductive layer includes a dummy pattern disposed in the line-free area and has a width greater than the touch signal lines.

Display module

Growing community of inventors

Suwon-si, South Korea

Hoon Gi Lee