Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Tsunenobu Yamamoto

Yoshihito Asao

Masaya Inoue

Shinji Nishimura

Takahiro Urakabe

Masahiko Fujita

Haruyuki Kometani

Keiichi Konishi

Toshiyuki Yoshizawa

Hideaki Arita

Yoshinobu Utsumi

Katsuhiko Kusumoto

A motor controller is provided which can be reduced in the number of the wirings and power semiconductor devices required while maintaining the function equivalent to or higher than that of the motor controller adopting the existing winding changeover scheme, thereby realizing cost and size reduction and life increase. The motor is made in a structure having motor windings opened at both ends. The one end terminals of phase windings are respectively connected to the output terminals of a first inverter circuit while the other end terminals are respectively connected to the output terminals of a second inverter circuit. During power generation, any one of the inverter circuits is driven on all the phases by means of a same control pulse.

Motor controller

A hybrid-excited rotating machine comprising: a stator winding of a multi-phase Y-connection; a plurality of rotor magnetic poles fixed on a rotor shaftat a predetermined spacing in the circumferential direction and confronting the inner circumference of said stator through a air gap; a plurality of permanent magnets fixed at substantially central portions of said circumferential direction of said individual rotor magnetic poles and magnetized in the radial direction of said rotor shaft; and a plurality of field windings wound individually on said rotor magnetic poles.

Hybrid-excited rotating machine, and vehicle with the hybrid-excited rotating machine

A method of controlling an electric rotating machine for a vehicle includes an electric rotating machine () including a rotator having a field winding () and a stator having an armature winding (), a field current controller () for controlling a field current supplied from a direct-current power supply to the field winding (), and a power converter () for converting a direct-current power into an alternating-current power and applying the power to the armature winding (). When the field current controller () starts to supply a current to the field winding () for starting an internal combustion engine, the power converter () supplies a power to the armature winding () so that magnetic flux in a direction opposite to that generated by the field winding () is generated simultaneously with or immediately before starting the power supply.

Control method of dynamo-electric machine for vehicle

A method of controlling a claw-pole synchronous machine with enhanced controllability without incurring additional expensiveness. Operation of the claw-pole synchronous machine is controlled through a vector control of an armature voltage and an armature current supplied from an inverter power source in combination with a field current control. When the claw-pole synchronous machine is operated as a generator, the field current is controlled on the basis of a demanded output power and rotation speed of the claw-pole synchronous machine while a field weakening control with the armature current (id) is performed by controlling magnitude and a phase difference angle (&Oslash;) of the armature current (id).

Method of controlling claw-pole synchronous machine

An automotive AC dynamo-electric machine is capable of providing a sufficient rotational output for starting an engine by running a rotor at high speed in a motor operation mode for starting the engine, thus obviating the need for increasing a size thereof. In the motor operation mode, an electromagnetic clutch follower connects to an electromagnetic clutch main body and also engages a cylindrical member to brake the cylindrical member. An internal gear portion provides a fixed element, and torque of a rotor is transmitted to a power transmission device via a rotor shaft, a sun gear, a planetary gear, and a carrier.

Growing community of inventors

Tokyo, Japan

Tsunenobu Yamamoto