Abstract: A lens mechanism includes a lens holding member that holds a lens, a movement member that is connected to the lens holding member, a fixation member that supports the movement member to be movable in an optical axis direction, a sensor that detects a position of the movement member, and an adjustment mechanism of the lens holding member. The sensor and the adjustment mechanism are disposed on an inside of the fixation member.

Abstract: A lens device includes a lens mechanism, a movement mechanism that includes a movement member moving the lens mechanism, and a braking mechanism that generates a braking force with respect to movement of the movement member. The braking mechanism includes a braking member that includes a pressing surface pressing a pressing target surface of the movement member, a support member that supports the braking member, and a pressing member that includes a pressing portion applying a pressing force to a first surface of the braking member. A contact portion between the pressing portion and the first surface is formed at a periphery of a recess portion.

Abstract: A lens mechanism includes a lens holding member that holds a lens, a movement member that is connected to the lens holding member and that moves in an optical axis direction, and a guide shaft that guides movement of the movement member. The movement member includes a bearing portion into which the guide shaft is inserted. The bearing portion includes a first portion and a second portion. The first portion comes into contact with the guide shaft. The guide shaft is movably inserted into the second portion.

Abstract: A lens device includes a fixation portion fixed to a lens mechanism and a rotational movement portion that is connected to the fixation portion to be rotationally movable. One of the fixation portion and the rotational movement portion includes a detection member and the other of the fixation portion and the rotational movement portion includes a detection target member and a substrate. The detection target member includes a body portion including an indicator of rotational movement and a plurality of extending portions extending from the body portion. The plurality of extending portions are connected to the substrate.

Abstract: A power conversion device includes a transformer, a plurality of converter cells, and a control circuit that controls semiconductor switching elements in each of the converter cells to be turned on and off. The transformer includes: a primary winding group being connected in multiple phases to an AC power supply including multiple phases; and a plurality of secondary winding groups. Each secondary winding group includes, in each of the multiple phases, secondary windings each formed of a single-phase open winding. Each converter cell converts a single-phase AC voltage between AC nodes connected to the respective secondary windings into a DC voltage by control of the semiconductor switching elements to be turned on and off, and outputs the converted DC voltage between a pair of DC nodes. The DC nodes of the plurality of converter cells are connected in series between a first DC terminal and a second DC terminal.

Abstract: A power conversion apparatus comprises, a converter that receives a three-phase AC power supply 1 and outputs a DC voltage, an inverter that is connected to the output of the converter and drives the AC motor via the output switch, a power switch for directly driving an AC motor from the AC power supply, a current detector for detecting the output current of the inverter, a voltage detector and a current detector for detecting the voltage and current of the power supply system on the input side of the converter, respectively, and a control unit for controlling the three-phase output voltage of the inverter based on the voltage command of three phases. The control unit includes a vector control unit that performs vector control of the AC motor and a synchronous incorporation controller. The synchronous incorporation controller switches to operate the inverter as a reactive power controller for the power supply system after closing the power switch to synchronize the AC motor with the AC power supply.

Abstract: The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.

Abstract: A power conversion device includes a transformer, a plurality of converter cells, and a control circuit that controls semiconductor switching elements in each of the converter cells to be turned on and off. The transformer includes: a primary winding group being connected in multiple phases to an AC power supply including multiple phases; and a plurality of secondary winding groups. Each secondary winding group includes, in each of the multiple phases, secondary windings each formed of a single-phase open winding. Each converter cell converts a single-phase AC voltage between AC nodes connected to the respective secondary windings into a DC voltage by control of the semiconductor switching elements to be turned on and off, and outputs the converted DC voltage between a pair of DC nodes. The DC nodes of the plurality of converter cells are connected in series between a first DC terminal and a second DC terminal.

Abstract: An inductor comprises a core and a coil. The coil has a first terminal, a second terminal, a first portion, a second portion, a third portion, a first coupling portion, a second coupling portion, a first extending portion and a second extending portion. Each of the first portion and the second portion is positioned apart from a first edge of the core. Each of the first portion and the second portion is parallel to the first edge. Each of the first portion and the second portion is positioned apart from the third portion in a first horizontal direction. The third portion is positioned apart from a second edge of the core. The third portion is parallel to the second edge. The first extending portion couples the first portion and the third portion with each other. The second extending portion couples the second portion and the third portion with each other.

Abstract: An electromagnetic interference suppressor is disposed so as to be effective for noise in a wide frequency band including a high frequency band. Provided is an electronic device including an electromagnetic interference suppressor; an interfering object configured to generate an electromagnetic wave; an interfered object to be affected by the electromagnetic wave; a substrate configured to mount thereon the interfering object and the interfered object; and the electromagnetic interference suppressor disposed in parallel to the substrate, and is disposed along only one of the interfering object and the interfered object. When an end portion of the interfering object opposed to the interfered object is defined as a first end portion, and an end portion of the interfered object opposed to the interfering object is defined as a second end portion, one end portion of the electromagnetic interference suppressor is disposed between the first end portion and the second end portion.

Abstract: A power conversion apparatus comprises, a converter that receives a three-phase AC power supply 1 and outputs a DC voltage, an inverter that is connected to the output of the converter and drives the AC motor via the output switch, a power switch for directly driving an AC motor from the AC power supply, a current detector for detecting the output current of the inverter, a voltage detector and a current detector for detecting the voltage and current of the power supply system on the input side of the converter, respectively, and a control unit for controlling the three-phase output voltage of the inverter based on the voltage command of three phases. The control unit includes a vector control unit that performs vector control of the AC motor and a synchronous incorporation controller. The synchronous incorporation controller switches to operate the inverter as a reactive power controller for the power supply system after closing the power switch to synchronize the AC motor with the AC power supply.

Abstract: A power conversion apparatus having a converter, an inverter controlled by inverter controller, and an input power source fluctuation detecting and controlling circuit is proposed. The input power source fluctuation detecting and controlling circuit includes an input power source fluctuation detector and a converter failure detector to detect overcurrent and/or overvoltage of the converter. When both of the input power source fluctuation and the converter failure are detected, the converter is gate blocked, and the inverter continues its operation, and when the DC voltage become lower than a threshold voltage during the converter is gate blocking, the input power source fluctuation detecting and controlling circuit outputs an inverter control changeover flag to the inverter controller for switching a contents of inverter control.

Abstract: An inverter test apparatus includes a DC power supply, a second inverter which is connected to a DC side of the first inverter, an inductor which is connected between an AC side of the first inverter and an AC side of the second inverter, a first controller which controls an AC voltage of the first inverter to be at a constant amplitude and a constant frequency, a current detector which detects a current that flows through the inductor, a phase command value computation module which computes a phase command value of the second inverter so as to control the current detected by the current detector, and a second controller which controls a phase of the second inverter, based on the phase command value computed.

Abstract: An electromagnetic interference suppressor is disposed so as to be effective for noise in a wide frequency band including a high frequency band. Provided is an electronic device including an electromagnetic interference suppressor; an interfering object configured to generate an electromagnetic wave; an interfered object to be affected by the electromagnetic wave; a substrate configured to mount thereon the interfering object and the interfered object; and the electromagnetic interference suppressor disposed in parallel to the substrate, and is disposed along only one of the interfering object and the interfered object. When an end portion of the interfering object opposed to the interfered object is defined as a first end portion, and an end portion of the interfered object opposed to the interfering object is defined as a second end portion, one end portion of the electromagnetic interference suppressor is disposed between the first end portion and the second end portion.

Abstract: The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.

Abstract: A device is provided with a potential noise radiating source capable of radiating potential noise, a potential noise receiving portion capable of receiving the potential noise and an electromagnetic interference suppression body. The electromagnetic interference suppression body is made by binding flaky soft magnetic metal powder with a binding component and has a sheet-like shape. The electromagnetic interference suppression body is formed with a plurality of slits. The electromagnetic interference suppression body is provided to straddle the potential noise radiating source and the potential noise receiving portion.

Abstract: In a motor driving system, a motor driving system is provided which simplifies the system by ceasing ON/OFF control of a commercial driving command, and by performing commercial synchronous transfer and capture control based on a drive speed reference. A system controller performs synchronization control so as to make a drive output coincident with a phase/amplitude of a commercial AC power source when a rotation speed of a motor exceeds a drive speed reference n2, and when a prescribed requirement is satisfied, the commercial AC power source is synchronously transferred, and the motor is driven by the commercial AC power source. In addition, when the drive speed reference is set to n1, and a drive output side switch is closed, the drive output is connected to the commercial AC power source, and when a prescribed requirement is satisfied, the motor is started to be driven at a variable speed (t7), and thereby the synchronous capture is performed.

Abstract: A power conversion apparatus having a converter, an inverter controlled by inverter controller, and an input power source fluctuation detecting and controlling circuit is proposed. The input power source fluctuation detecting and controlling circuit includes an input power source fluctuation detector and a converter failure detector to detect overcurrent and/or overvoltage of the converter. When both of the input power source fluctuation and the converter failure are detected, the converter is gate blocked, and the inverter continues its operation, and when the DC voltage become lower than a threshold voltage during the converter is gate blocking, the input power source fluctuation detecting and controlling circuit outputs an inverter control changeover flag to the inverter controller for switching a contents of inverter control.

Abstract: A device is provided with a potential noise radiating source capable of radiating potential noise, a potential noise receiving portion capable of receiving the potential noise and an electromagnetic interference suppression body. The electromagnetic interference suppression body is made by binding flaky soft magnetic metal powder with a binding component and has a sheet-like shape. The electromagnetic interference suppression body is formed with a plurality of slits. The electromagnetic interference suppression body is provided to straddle the potential noise radiating source and the potential noise receiving portion.