Omron Corporation

Akihiko Sano

Hayami Hosokawa

Naru Yasuda

Junichi Tanaka

Toshiaki Okuno

Shuichi Misumi

Tsuyoshi Takeuchi

Kohei Tomita

Hiroto Nozawa

Hiroshi Sameshima

Akira Enami

Yoshihisa Ishida

Kenji Kobayashi

Akihiro Funamoto

Naoki Yoshitake

Junichiro Yamada

Kotaro Nakamura

Takuya Nakai

Yoshitaka Tatara

Eiichi Omura

Akihiko Hatamura

Kosuke Morita

Tetsuro Kubota

Hirokatsu Nakayama

Makoto Ide

Kohei Nakagawa

Shuichi Misuimi

A defect number determination unit determines whether or not a solar cell string is defective in a plurality of positions on the basis of whether or not a combined impedance found from impedances in the case where an inspection signal is applied to a P terminal and an N terminal of the solar cell string deviates from a reference impedance by greater than or equal to a predetermined threshold.

Photovoltaic power generation system inspection apparatus and inspection method

The disclosure is provided to improve the accuracy of a ground fault position detected from a power conditioning system. A ground fault position calculation part () calculates a ground fault position (P) by using a power supply voltage of a solar cell string (), a ground fault current (I), and a ground potential of an input terminal (N) measured by a power conditioning system (). The ground fault position calculation part () sets a lower limit value of the power supply voltage to be used.

Ground fault detection device

A bypass diode with a disconnection fault is identified. A test device includes: a signal introduction circuit that applies a disconnection position identification signal to between a positive electrode and a negative electrode of a solar battery string; and a fault calculating part that identifies the bypass diode with a disconnection fault on the basis of an AC component of a voltage between a frame ground and the positive electrode or an AC component of a voltage between the frame ground and the negative electrode when the disconnection position identification signal is applied.

Test device for a photovoltaic system having solar cell string

Provided is an inspection device that can determine by itself whether a power-supply-side circuit () including a solar-cell string () is electrically isolated from a PCS (). The inspection device () measures the impedance of the power-supply-side circuit including the solar-cell string () and determines whether the power-supply-side circuit is electrically isolated from the PCS () on the basis of the capacitive component of the measured impedance.

Inspection device, control method for same, and non-transitory computer readable storage medium

In a solar power generation system, a solar battery string is connected to a PCS via an electric path. In the solar battery string, a plurality of solar battery units having a solar battery module and an optimizer that optimizes an output voltage of the solar battery module are connected in series. In an arc detection apparatus, capacitors form bypass current paths that bypass the optimizer, and an electric current sensor is provided on the electric path.

Arc detection apparatus

A storage unit stores a defect correlation table indicating what influence a given type of defect will have on the inspection of the other types of defects. When an obtainment unit obtains an inspection result of inspecting for a defect, an influence determination unit refers to the defect correlation table and determines the influence of the other types of defects on the inspection result. Information pertaining to the determined influence is outputted via an output unit.

Inspection support apparatus and control method thereof, inspection system, and control program

A solar photovoltaic system inspection apparatus sequentially applies AC inspection signals to a positive electrode and a negative electrode of a solar cell string, and is provided with: an impedance calculation unit configured to measure an indicator value when the signal is applied to the positive electrode, and an indicator value when the signal is applied to the negative electrode, the indicator values varying depending on the number of solar cell modules from the terminal to which the inspection signal was applied to a failure position; and a control unit configured to obtain the failure position based on the ratio of the indicator value measured when the inspection signal was applied to the positive electrode, to the indicator value measured when the inspection signal was applied to the negative electrode.

Solar photovoltaic system inspection method and inspection apparatus

An optical module has a support board, an optical transmission path, and at least a single optical element having a light receiving function or a light emitting function provided on the support board. A light emission surface of the optical transmission path or a light incidence surface of the optical transmission path is arranged such that the optical element and the optical transmission path are optically coupled to each other, with respect to a light receiving surface or a light emitting surface of the optical element. The optical element is sealed by a sealing agent. A gap is provided between the optical transmission path and the surface of the sealing agent on the light receiving surface or the light emitting surface of the optical element.

Optical module, method of producing optical module, optical transmission module, and electronic apparatus

A light guide includes a core made of material having translucency and an optical path conversion mirror for reflecting the signal light from the optical element and converting the optical path of the signal light formed on at least the core. The signal light is transmitted through the core by the reflection at the optical path conversion mirror. The optical path conversion mirror surface has an inclination angle &#x3b1; formed with a bottom surface of the core changing in the X-direction in a cross-sectional shape in which the core is cut at a YZ plane, the Y-direction being an optical axis direction of the optical element, the Z-direction being an advancing direction of the signal light of the light guide, and the X-direction being a direction perpendicular to both the Y-direction and the Z-direction.

Light guide, light transmission module, electronic device, and manufacturing method of light guide

An integrally molding die for manufacturing a package includes a supporting portion for supporting at least one end including an incident/exit port of a light signal in a light transmission path, and a lead frame for mounting an optical element. The integrally molding die includes a recess for forming the supporting portion, a first projection, which comes into contact with an optical element mounting surface of the lead frame, and a second projection, which comes into contact with a back surface of the optical element mounting surface.

Package manufacturing method, package, optical module and die for integral molding

A connection member (), which electrically connects a package () on which an optical element that converts an electric signal to an optical signal or converts an optical signal to an electric signal and at least one end portion including an incident/releasing port for an optical signal of an optical waveguide () that is optically coupled with the optical element to transmit the optical signal are mounted, and a second substrate () to each other, is provided with a holding unit having elasticity, which holds the package (), and a connection unit that is connected to the substrate ().

Optical transmission module, connecting part, and electronic device having optical transmission module

An optical module has an optical element which transmits or receives an optical signal, an optical transmission line optically coupled to the optical element to transmit the optical signal, and a board to which at least one end portion including an incident and outgoing port of the optical signal in the optical transmission line and the optical element are fixed. A wall facing a side surface of the optical transmission line is provided in the board. A first space is provided between the board and the optical transmission line, and a second space is provided between the side surface of the optical transmission line and the wall. The first and second spaces are filled with a bonding agent.

Optical transmission module

A connection member electrically connects an optical element configured to convert an electric signal to an optical signal or to convert an optical signal to an electric signal, a first substrate including an incident/releasing port of an optical transmission path for an optical signal at least one end portion thereof, and a second substrate to each other. The optical transmission path is optically coupled with the optical element to transmit the optical the connection. The connection member includes a connection unit connected to the second substrate and a holding unit having elasticity and holding the first substrate. The holding unit is provided with an electrode at a connecting position to the first substrate, and the holding unit holds the first substrate by connecting the first substrate to the electrode.

An optical cable module has an optical waveguide formed by surrounding a core with a clad layer and a light-receiving/emitting element, installed on a supporting substrate. A light-releasing face of the optical waveguide or a light-incident face to the optical waveguide is aligned so as to face a light-receiving face or a light-emitting face of the light-receiving/emitting element. The optical waveguide is formed into a film shape having flexibility, and provided with a reinforcing member that prevents a deflection from occurring in the optical waveguide. The optical waveguide is placed on a protruding portion from a supporting face of the optical waveguide on the supporting substrate.

Optical cable module

Optical fiber guides are provided outside a waveguide mounting region of a supporting substrate. Optical fibers are provided so as to be fitted in the optical fibers, respectively. In addition, end faces of the optical fibers and end faces to which a core of an optical waveguide is exposed are opposed and almost parallel to each other. Furthermore, the end face to which the core of the optical waveguide is exposed is provided so as to form an acute angle with a surface of the supporting substrate. Thus, tip ends of the optical fibers are not likely to be shifted from the core in a thickness direction of an optical waveguide device.

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Uji, Japan

Akihiko Sano