Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Konami Digital Entertainment Co., Ltd.

Namco Limited

Mitsubishi Corporation

Michio Yamada

Yosuke Shinomoto

Takuya Shimomugi

Hiroyuki Ishii

Kazunori Hatakeyama

Hiroki Aso

Junichiro Oya

Kazunori Sakanobe

Shigeo Umehara

Mitsuo Kashima

Mineo Yamamoto

Hitoshi Kawaguchi

Atsushi Matsuoka

Tomoyuki Hasegawa

Tetsuya Funatsu

Hitosi Kawaguchi

Toshio Natsui

An EV-PCS, which is a charger/discharger, includes: a power converter, which is a charging/discharging unit that controls at least one of charging a storage battery mounted on an EV and discharging the storage battery; a charging/discharging cable extending from the power converter; and a charging/discharging connector for connecting the charging/discharging cable to the EV. The charging/discharging connector includes a temperature detection element having a surface covered with resin, the temperature detection element detecting the internal temperature of the charging/discharging connector. The power converter reduces a value of current flowing to the charging/discharging cable during the charge or discharge of the storage battery as the temperature detected by the temperature detection element rises.

Charger/discharger

A motor incorporating a power converter including a printed board on which a semiconductor module (an inverter IC), which converts a voltage of an external power supply into a high-frequency voltage and supplies the high-frequency voltage to a stator, is mounted, wherein a high-voltage circuit ground, which is a power ground of a high-voltage main circuit system of the inverter IC, and a low-voltage circuit ground, which is a ground of a control circuit system, which is a low-voltage circuit, of the semiconductor module, are provided on the board, and the high-voltage circuit ground and the low-voltage circuit ground are connected at one point via a resistor.

Motor incorporating power converter, and air conditioner, water heater, and ventilation blower incorporating the motor

A power conversion device is configured to have reactors and is configured to have chopper circuit units, connected in series, that chop the output of a rectifier configured to rectify an AC voltage from an AC power supply. The power conversion device includes: an AC switch disposed on a side closer to the AC power supply than the chopper circuit units; an AC reactor that is connected in parallel to the AC switch; and a switching control unit that stops the switching of the switching elements when the contact of the AC switch is open.

Power conversion device, motor drive control device equipped with power conversion device, compressor and blower equipped with motor drive control device, and air conditioner equipped with compressor or blower

A power conversion device includes a switching control unit that controls respective switching elements constituting a plurality of chopper circuits, a rectified-voltage detection unit, a bus-bar voltage detection unit, and a bus-bar current detection unit. The switching control unit includes an on-duty calculation unit that calculates a reference on-duty of respective drive pulses with respect to the switching elements based on a bus-bar voltage and a bus-bar current, an on-duty correction unit that corrects the reference on-duty to output on-duties of the respective drive pulses based on the bus-bar current, so that change amounts of respective reactor currents become substantially the same, and a drive-pulse generation unit that generates the respective drive pulses, based on the respective on-duties.

Power conversion device, motor drive control apparatus including the power conversion device, air blower and compressor including the motor drive control apparatus, and air conditioner including the air blower or the compressor

A power conversion device includes a printed circuit board, whose mounting surface is opposite to an annular surface formed by an annular stator that constitutes a motor, arranged to be separated from the annular surface with a predetermined distance, and mounted with a Hall element that detects a rotation position of a rotor of the motor on a mounting surface on a side of the stator; an inverter IC that is mounted on the mounting surface on the side of the stator of the printed circuit board to supply a high-frequency current to the stator; and an overheat detection unit that is mounted on the mounting surface on the side of the stator of the printed circuit board and detects an overheated state of the inverter IC. When the overheat detection unit detects an overheated state, the inverter IC restricts or stops a current to be supplied to the stator.

Power conversion device, motor including the same, air conditioner having the motor incorporated therein, and ventilation fan having the motor incorporated therein

A drive device driving a power converter that includes a switching element formed from a wide bandgap semiconductor, includes a PWM-signal output unit that generates a drive signal that drives the switching element with PWM; an on-speed reducing unit that, when the switching element is changed from off to on, reduces a change rate of the drive signal; and an off-speed improving unit that, when the switching element is changed from on to off, draws charge from the switching element at a high speed and with a charge drawing performance higher than that at a time when the switching element is changed from off to on.

Drive device for power converter and driving method of power converter

A motor incorporating a power converter that includes a printed board on which an inverter IC, which converts a voltage of an external power supply into a high-frequency voltage and supplies the high-frequency voltage to a stator, is mounted, wherein on a surface of the printed board opposed to the stator, a high-voltage direct-current input wire, which is a copper foil provided on a surface on a stator side, is disposed. One end of the high-voltage direct-current input wire is electrically connected to a high-voltage input line of the external power supply and the other end of the high-voltage direct-current input wire is electrically connected to a high-voltage electrode of the inverter IC.

A motor driving circuit includes a magnetic-pole-position detecting unit that detects a rotating position of a rotor of a permanent magnet synchronous motor, a voltage output unit that converts a direct-current voltage and generates a driving voltage for the permanent magnet synchronous motor, a voltage control unit that controls the voltage output unit on the basis of a comparison result of a modulation wave and a carrier wave, a voltage-phase adjusting unit that determines, using a differential amplifier circuit that receives a rotating speed control signal and an offset signal, a phase of the modulation wave generated by the voltage control unit and causes the voltage control unit to generate the modulation wave in the determined phase, and an offset generating unit that generates the offset signal.

Motor driving curcuit and permanent magnet synchronous motor

A converter circuit including a step-up converter including a rectifier, a step-up reactor, a switching element, and a reverse current prevention element; a step-up converter having a step-up reactor, a switching element, and a reverse current prevention element and connected in parallel with the step-up converter; a switching control unit that controls switching elements; and a smoothing capacitor that is provided at the output of the step-up converters. The switching control unit switches the current mode of the current flowing through the step-up reactors into any of a continuous mode, a critical mode, and a discontinuous mode based on a predetermined condition.

Converter circuit, and motor drive control apparatus, air-conditioner, refrigerator, and induction heating cooker provided with the circuit

In a game device () for showing a past operation history to a player in comparison with the current operation status, a first moving unit () moves a first object in a virtual space based on a moving instruction input received by an input receiving unit (), an input history storage unit () stores the moving instruction input as input history information, a second moving unit () moves a second object in the virtual space based on input history information stored in the past, an assessment unit () assesses whether or not the first object and the second object are overlapping in the virtual space, and a display unit () displays the second object in a case where a non-overlapping state has been identified and stops the display of the second object in a case where an overlapping state has been identified.

Game device, game control, method, information recording medium and program

One of the purpose is to obtain a motor drive circuit and an outdoor unit for an air conditioner using the same, which can flexibly support change of a model at a low price and in a small lot without using unnecessary materials, wherein a stress in a soldering part due to self-heating is low, a solder reliability is high, and design constraints are small, while maintaining a low-noise and low-loss power wiring due to lowering inductance. The motor drive circuit according to the present invention, for driving the motor using the converter circuit and the inverter circuit, whereon electronic components making up a converter circuit and an inverter circuit are mounted, which includes a lead frame molded boardwherein metal plate leadsare molded with a mold resin, and a single-sided printed circuit boardfor a control circuit, and wherein power terminalsof the electronic components are connected to the lead frame molded board, and control wiring terminalsof the electronic components are connected to the single-sided printed circuit board

Motor drive circuit and outdoor unit for air conditioner

This invention provides a game system that reflects the allegiances of a player towards an object that is manipulated in the game. In the game system, any manipulation object can be selected from a plurality of manipulation objects. The game system has a computing device for computing selection assessments for each manipulation object, and a displaying device for displaying the selection assessments for each manipulation object on a display section, when the player selects a manipulation object.

Game system and information storage medium

An electric leakage preventive apparatus comprises an equivalent impedance which is equivalent to a load leakage impedance of a load in a main body; a switching unit for applying voltage to the equivalent impedance; a driving unit for driving the switching unit; and a control unit for generating a switching pattern. The leakage preventive apparatus is capable of simply and surely preventing leakage current since the earthing current is canceled by applying an anti-phase voltage to the equivalent impedance.

Growing community of inventors

Tokyo, Japan

Michio Yamada