Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Mitsubishi Heavy Industries Automotive Thermal Systems Co., Ltd.

Takayuki Takashige

Makoto Hattori

Koji Nakano

Hiroyuki Kamitani

Takashi Nakagami

Kazuki Niwa

Hiroto Higuchi

Kyohei Watanabe

Masahiko Asai

Shunsuke Yakushiji

Kenichi Aiba

Takeshi Hirano

Masayuki Ishikawa

Hideaki Takahashi

Takayuki Hagita

Nobuya Nakagawa

Koji Toyama

Mikihiko Ishii

Yuki Ichise

Hitoshi Tamaki

Toyohisa Kawashima

Hideto Noyama

Kenji Tsutsui

Tadahiro Matsukawa

Takeo Hayashi

Takehiro Adachi

Atsushi Takai

Masaharu Tanaka

Masahiro Goto

Makoto Ebisawa

A control device that includes an electric detection unit which detects an electric physical quantity relating to a head capacitor provided between a DC power supply and an inverter switching element; and a protection control unit which controls the inverter switching element in accordance with a change in the electric physical quantity so that no electric current flows to the head capacitor.

Protection control unit for an inverter controlling current flow to a head capacitor

An electric compressor includes: a circuit board on which a plurality of switching elements () are mounted; a compression mechanism which is driven by a motor operated using AC power output from the switching elements (); and a lead holding member () disposed between element main bodies () of the switching elements () and the circuit board. The circuit board includes a plurality of through-holes through which a plurality of leads () that extend from the element main bodies () can be respectively inserted. The lead holding member () includes lead insertion holes () through which the leads () can be inserted such that positions of the leads () is held at positions that correspond to positions of the through-holes.

Electric compressor

A capacitor unit () includes: a harness side terminal () provided in a housing () for accommodating a capacitor main body therein and connectable to an electric power harness for supplying DC power from an outside; and a board side terminal () connectable to a circuit board from which the DC power is output via the capacitor main body. The board side terminal () extends in a plate shape from a base portion () held in the housing () toward a distal end portion () connected to the circuit board, and has a notch portion () recessed inward of the board side terminal () in a width direction between the base portion () and the distal end portion ().

Capacitor unit, and electric compressor

A control device for a compressor includes an operation stop control unit that stops the compressor in a procedure different from a normal stop request signal when a signal different from the normal stop request signal that requests the compressor to stop in a predetermined procedure and a forced stop request signal from a device including the compressor is detected. The operation stop control unit stops the compressor in the different procedure according to a speed of the compressor when the forced stop request signal is detected.

Control device for electric compressor, electric compressor, air conditioning device for moving object, and method for controlling electric compressor

A motor control device provided with a control unit which controls the number of rotations of a motor by implementing a first control which enables high-torque and precise control, or a second control enabling more efficient control than the first control with respect to the motor; and a switching determination unit which, if an actual measurement value of the number of rotations of the motor is greater than a prescribed threshold value of the number of rotations, switches the first control to the second control. The switching determination unit further switches the first control to the second control if the actual measurement value of the number of rotations is not more than the threshold value of the number of rotations, and when a prescribed time has passed from a point in time at which the actual measurement value of the number of rotations matched the required number of rotations.

Electric compressor, motor control method, and non-transitory computer-readable medium

A capacitor unit () includes: a harness side terminal () provided on a first end portion () side of a first surface of a housing () for accommodating a capacitor main body therein; a board side terminal () provided in the housing () and connectable to a circuit board; and a plurality of guide portions () that protrude from the first surface and extend from a second end portion () on a side opposite to the first end portion () toward the first end portion (). The plurality of guide portions () are provided to be separated in a second direction orthogonal to a first direction of connecting the first end portion () and the second end portion () to each other so as to sandwich the harness side terminal () therebetween.

Insulating material for electric compressor

A current value determination device provided with: a capacitor current computation unit for computing the capacitor current of a capacitor included in a high-voltage circuit that drives a motor, on the basis of the input voltage of an inverter included in the high-voltage circuit and the revolution speed of the motor; and a capacitor current determination unit for determining the value of capacitor current on the basis of the input voltage of the inverter, the revolution speed of the motor, the capacitor current computed by the capacitor current computation unit, and a prescribed model for determination.

Current value determination device, controller, electric compressor, current value determination method, and control method

This electric compressor includes a compressor which rotates to compress a fluid, a motor which rotatably drives the compressor, and a control unit which controls current supply to the motor using first and second components. An allowable current for first and second components exposed to the same temperature is set to be smaller in the second component than in the first component. The second component is disposed at a place in which cooling capability is greater than that of the first component so that allowable power of the second component at rated use is greater than allowable power of the first component. This electric compressor includes a temperature sensor which detects the temperature of the first component and a calculation unit which outputs an alarm signal when the detected temperature and a current flowing in the first component satisfy a predetermined condition.

Electric compressor, control device, and monitoring method

Provided is an air conditioning apparatus that is capable of suppressing increases in volume and cost of the apparatus and performing more suitable overheating protection. An electric compressor is an inverter-integrated electric compressor () integrally including a compressor (), an electric motor () that drives the compressor (), and an inverter () including a temperature sensor () that detects the temperature in the vicinity of a semiconductor switching device, wherein a controller () estimates a discharge temperature of the compressor () on the basis of a correlation of respective pressure loading characteristics for the detected temperature of the inverter (), for the rotational speed of the compressor (), and for the motive force of the compressor () in a refrigerating cycle ().

Air conditioning apparatus

A substrate includes a substrate body, a flux coating portion which is coated with flux promoting solder fluidity on a surface of the substrate body, a conduction portion which is disposed on the surface of the substrate body to be separated from the flux coating portion and is conductive, and a silk portion which is disposed between the flux coating portion and the conduction portion on the surface of the substrate body and is provided by silk printing.

Substrate, electric compressor, and air conditioner

A circuit assembly () provided with: a circuit board (); a capacitor () connected to the circuit board (); and a circuit casing (C) configured to house the circuit board () and the capacitor (). The capacitor () is provided with: a component body () including a pair of connection terminals (A andA) to be fixed to the circuit board (); and a first fixing unit () and a second fixing unit () configured to fix the component body () to the circuit casing (C) at both sides. The connection terminals (A andA) are disposed with a fixed line (L) connecting the first fixing unit () and the second fixing unit () interposed therebetween, and both of the pair of connection terminals (A andA) protrudes sideward from the component body () between a first surface of the circuit board () and the circuit casing (C), and extends toward the circuit board (). Distal ends (P) of each of the connection terminals (A andA) are fixed to the circuit board () in a vicinity of the first fixing unit ().

Circuit assembly having vibration-proof fixing structure for circuit component, and electric compressor for vehicle

An electric wire lead-in part structure () includes: a conductor insertion hole () formed through a wall part (Ca) of an inverter accommodating chamber; a conductor member () made of an electrically conductive material and inserted into the conductor insertion hole () in a waterproof manner and also, electrically conducted to the conductor insertion hole () and holding a power supply cable () passed therethrough; a shield grounding part () for electrically conducting a shield part () of the power supply cable () to the conductor member () at a position where the conductor member () is provided; and an electric wire waterproofing part () for waterproofing a gap between the conductor member () and the power supply cable (). The shield grounding part () is configured to fasten a set screw () abutted against a crimp ring () provided on the shield part (), the set screw () being threadedly engaged with the conductor member () so as to protrude into an electric wire passing hole () formed in the conductor member (), across the axial direction of the electric wire passing hole ().

Electric wire lead-in part structure of electric compressor, and electric compressor and shield electric wire provided with same

An object is to provide a motor-driven compressor capable of reducing cost required when a failure occurs in part of components configuring an inverter device. A power substrate assemblyis removably fixed to a housing bodyin an inverter accommodation chamber, and a control substrate assemblyand a filter circuit assemblyare removably fixed to a cover. Therefore, when the coveris removed from the housing body, the power substrate assembly, the control substrate assembly, and the filter circuit assemblycan be independently removed from the housing bodyor the cover, and new power substrate assembly, control substrate assembly, and filter circuit assemblycan be independently mounted on the housing bodyor the cover

Growing community of inventors

Tokyo, Japan

Takayuki Takashige