Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Nsk Corporation

Masahiko Fujita

Yoshihito Asao

Hitoshi Isoda

Naohide Maeda

Masaki Kato

Haruyuki Kometani

Dai Nakajima

Toshiyuki Yoshizawa

Yoshinobu Utsumi

Yuji Shirakata

Katsumi Adachi

Tomoaki Shimano

Tatsuya Fukase

Masaya Inoue

Masao Kikuchi

Masaru Kuribayashi

Kazuyasu Sakamoto

Atsushi Takechi

Keiichi Konishi

Naohiro Oketani

Yoshihiro Harada

Wakaki Miyaji

Naohiro Motoishi

Daisuke Imai

Akira Morishita

Atsushi Yamamoto

Shinji Nishimura

Hiroyuki Akita

Masatsugu Nakano

Kazumasa Ito

Toshiaki Kashihara

Shuzo Isozumi

Yoshiharu Hayashi

Yusuke Morita

Kenichi Akita

Mitsuharu Hashiba

Hideki Morikaku

Mitsunori Tabata

Shoichiro Nishitani

Norio Matsumoto

Kazuhiro Shono

Jun Tahara

Ryoichi Taji

Tatsuya Ikegami

Tsunenobu Yamamoto

Mitsunori Ishizaki

Takuya Oga

Yosuke Uno

Manabu Horita

Tomohiro Kurita

Yasushi Nakatake

Masaharu Doi

Shinya Kudou

Shinya Kudoh

A power source device including: a DC power source; an inverter to which power is supplied from the DC power source; a capacitor connected between the DC power source and the inverter in parallel with the inverter; a reverse connection protection circuit connected between the DC power source and the capacitor and configured to block current flowing through a positive electrode-side power source line of the DC power source from the capacitor to the DC power source; and an overvoltage protection circuit configured to control both-end voltage across the capacitor to a voltage less than or equal to a predetermined voltage when the both-end voltage becomes greater than or equal to the predetermined voltage.

Power source device and electric power steering device

To provide a controller for a rotary electric machine capable of suppressing occurrence of an angle interval when the rotary electric machine cannot output torque, even if the ON angle interval of the switching devices is set smaller than 120 degrees in the rectangular wave control. A controller for a rotary electric machine performs a rectangular wave control to a rotary electric machine which has 2 groups of three-phase windings, with a phase difference between groups; and switches a first control mode and a second control mode according to a switching condition; wherein the first control mode is a mode which sets an ON angle interval to an angle within a range from 120 degrees to 180 degrees; and wherein the second control mode is a mode which sets the ON angle interval to an angle within a range from 90 degrees to 120 degrees.

Controller for rotary electric machine

In a related-art resolver, a front and a back of a stator core cannot be distinguished, and it is difficult to mass-produce the resolver while matching directions of shear drops and burrs. Thus, assembly accuracy of the resolver is degraded. Further, productivity and assembling ability are degraded because electromagnetic steel sheets are laminated by rotary lamination. The present invention provides a resolver including: a resolver stator including: a stator core formed of electromagnetic steel sheets, which have teeth, and are laminated without rotary lamination; a one-phase excitation winding; and two-phase output windings; and a resolver rotor arranged to be opposed to the resolver stator, in which the stator core has marks which enable distinction of a rolling direction of the stator core and distinction of a front and a back of the stator core.

Resolver

The present invention is concerning a controller-integrated rotary electric machine having a power circuit portion provided between an external power source and a stator winding of a rotary electric machine main body, wherein the power circuit portion includes: a positive-side power input/output terminal and a negative-side power input/output terminal that are electrically connected to the external power source; a power module that performs power conversion between the external power source and the stator winding; and a single heat sink that cools the power module, the positive-side power input/output terminal being fixed to the single heat sink via an insulating material, and the negative-side power input/output terminal being fixed directly to the single heat sink.

Controller-integrated rotary electric machine

In a rotary electric machine, a power supply unit includes a metal casing, a power circuit unit mounted in the metal casing, and a control board for controlling an operation of the power circuit unit, and supplies power to a motor main body. The power circuit unit includes a plurality of power semiconductor components and a capacitor unit. The plurality of power semiconductor components and the capacitor unit are disposed alternately on a plane perpendicular to a rotary shaft of the motor main body.

Rotary electric machine

When a power semiconductor device is energized, heat generated from upper-side power semiconductor chips mounted on a P-potential electrode transfers to a first heat mass portion and a second heat mass portion, and heat generated from lower-side power semiconductor chips mounted on a intermediate potential electrode transfers to a resistor. A lead frame, the power semiconductor chip, an inner lead and the resistor are placed in symmetry with respect to a centerline, which can reduce the difference among the temperature increases of the power semiconductor chips when energized. In this way, transient temperature increase of the power semiconductor chip can be suppressed without adding a new member, such as a heat diffusion plate.

Power semiconductor device

A controlling device integrated rotating electric machine including a rotating electric machine's main body having a rotor winding and a stator winding, a power converter circuit connected to the rotor winding and the stator winding and having a control board and a power module and a smoothing condenser, a heat sink having a container portion swelling out towards a front side and attached to a rear side of the rotating electric machine's main body, a case, containing the control board and the power module, formed of a power supply wiring and a grounding wiring connected to a battery placed outside, and fixed to a rear side of the heat sink, and a sealing resin body sealing the control board and the power module contained in the case, wherein the smoothing condenser is joined with the power supply wiring and the grounding wiring, and is contained in the container portion.

Controlling device integrated rotating electric machine

A rotary electric machine integrated with a control device includes: a housing composed of a front bracket and a rear bracket and supporting a rotor and a stator; and a control device attached to the rear bracket. The control device is composed of: a power module having a switching element that is for energizing a stator winding of the stator; a field module having a switching element that is for energizing a field winding of the rotor; a heat sink cooling the power module and the field module; and a control board having a control circuit that controls the switching elements, the control device also including: a battery end terminal; and a grounding end terminal. Then, the heat sink is attached to the rear bracket while being insulated therefrom.

Rotary electric machine integrated with control device

A rotary electric machine in accordance with the invention includes: a case including a front-side housing and a rear-side housing; a rotor having a field winding placed in the case; a stator having an armature winding placed in the case; a power module for energizing armature current that flows in the armature winding; a heat sink, on which the power module is mounted, for cooling the power module; a field circuit module for controlling field current that flows in the field winding; and a control circuit for controlling the operation of the power module and the field circuit module, wherein the power module includes a pair of power modules mounted opposite to each other on a base surface of the heat sink, and the heat sink includes a plurality of cooling fins placed thereon.

Rotary electric machine having an heat sink with semiconductor modules attached

A power module composite includes a power module () in which switching devices () included in an electric-power conversion circuit are molded, a driver module () that includes a control circuit () for controlling the switching devices () and is molded, a housing () containing the power module () and the driver module (), and a heat sink () that is fixed to the housing () and refrigerates the switching devices (); the power moduleand the driver moduleare mounted in that order on the heat sink () in such a way as to be superimposed on each other.

Electric rotating machine

Two or more switching devices () and two or more lead frames (, and) are integrally molded by use of a molding resin () so that a power module () is formed; the power module () is made to adhere to a heat sink () via an insulating material (); the power module () and the heat sink () are fixed to a housing () of the power module composite (); the power module composite () is fixed to a case () of an electric rotating machine () via the housing ().

When a rotating machine unit is under at least a predetermined operation condition in a motor mode or when the rotating machine unit is under at least a predetermined operation condition in an electric power generator mode, there is performed electric-power conversion control in which there are combined rectangular wave energization control where an armature winding is energized with a rectangular wave and duty energization control where the armature winding is energized with the rectangular wave at a predetermined duty ratio.

Electric rotating machine and control method therefor

Provided is a rotating electrical machine, including: temperature information acquisition means for acquiring information on a temperature of a brush; rotation information acquisition means for acquiring information on a rotation angle of a rotation shaft; and a wear amount calculation section for acquiring the temperature of the brush based on temperature information including output information of the temperature information acquisition means, and for calculating a total wear amount of the brush by integrating a product of a value corresponding to the temperature of the brush, the value being a wear amount function defined as a wear amount per unit sliding distance of the brush with the temperature of the brush used as a variable, and a value including an rotational speed of a rotor, with respect to time from immediately after start of use of the brush to a current time.

Rotating electrical machine

A rotating electrical machine includes: a case; a rotor; a stator; a control portion including a field circuit portion used to supply a current to a control circuit and the field winding; a power circuit portion controlling a stator current; a heat sink installed so as to cool the control portion and the power circuit portion; a first waterproof portion providing waterproofing to signal terminals of the power circuit portion and the field circuit portion; a second waterproof portion provided with through-holes from which a part of the control portion and the power circuit portion is exposed and providing waterproofing between the control portion as well as the power circuit portion and the heat sink; and insulation portions installed in the through-holes of the second waterproof portion and isolating the control portion and the power circuit portion from the heat sink.

In a controller-integrated electric rotating machine configured to assemble a front side semi-manufactured assembly E formed from an electric rotating machine main bodyand a front bracketwith the rear side semi-manufactured assembly D to which a rear bracket, a control unit assembly A, a power unit assembly B, and a brush unit assembly C are integrated, a series of brush restricting pin insertion holesare disposed from a rear side end surface of the control unit assembly through the brush, and therefore assembling workability is improved without failures in assembling work which occur due to breaking away of a brush from a brush holder to the rotary shaft side.

Controller-integrated electric rotating machine with brush restricting elements and assembling and disassembling methods of the same

Growing community of inventors

Tokyo, Japan

Masahiko Fujita