Patent application number | Description | Published |
20080303459 | Generator Control Unit - An object of the present invention is to provide a generator control unit having improved voltage response in a system which is not provided with a battery in a DC output unit. | 12-11-2008 |
20080309264 | Control Apparatus for Rotational Electric Machine and Driving Apparatus for Vehicle - A control apparatus for controlling a rotational electric machine and a driving apparatus for a vehicle that include an AC motor that rotates wheels and is driven by a power supplied from a battery, an instant variation detecting unit provided in a motor controller that detects a instant variation of a current or voltage of the battery, and a current command operating unit that changes a current command to be sent to the AC motor such that an internal loss of the AC motor is increased by using an internal-loss-increase-use Id·Iq table. | 12-18-2008 |
20090071735 | Controller of Field Winding Type Synchronous Motor, Electric Drive System, Electric Four Wheel Driving Vehicle, and Hybrid Automobile - An object of the present invention is to provide a controller of a field winding type synchronous motor that can stably output torque even if the d-axis current pulsates by reducing torque pulsation without causing fluctuations in the magnetic flux acting on the torque, and also provide an electric drive system, an electric four wheel driving vehicle, and a hybrid automobile. A motor control unit | 03-19-2009 |
20090128069 | Motor Control Apparatus and Control Apparatus for hybrid Electric Vehicles - To provide a motor control apparatus that uses an inverter to drive an AC motor and hybrid automotive control apparatus adapted to drive an AC motor by use of an inverter while reducing torque pulsations during switching from PWM driving to rectangular-wave driving. | 05-21-2009 |
20090248230 | Motor Controller - The present invention provides a motor controller capable of selecting a motor drive system that provides the best possible system efficiency, according to monitored parameters indicative of the vehicle condition and the conditions of the mounted components. A drive signal processing block of the motor controller outputs drive signals to the motor by using a first drive system and a second drive system causing less switching loss than the first drive system, depending on a demanded torque for the motor. A drive system determination block, when an operating point of the motor allows selection between the first drive system and the second drive system, performs switching from the first drive system to the second drive system, based on the condition of an electric component of the vehicle or the vehicle running condition. | 10-01-2009 |
20100052581 | MOTOR CONTROLLER - When the torque command value is zero, a set point of DC current for an inverter is calculated to obtain a difference between the set point and a detected DC current so that an error in magnetic pole position may be estimated and corrected. By correcting the magnetic pole position, unwanted power running and regenerative torque of the motor can be avoided and unnecessary charge or discharge to or from a battery can be prevented. | 03-04-2010 |
20110297486 | FORKLIFT | 12-08-2011 |
20110313608 | CONSTRUCTION MACHINE AND INDUSTRIAL VEHICLE HAVING POWER SUPPLY SYSTEM - A construction machine or industrial vehicle having a power supply system which includes a chargeable and dischargeable capacitor and a feeder circuit connecting a battery and the capacitor to a load capable of power running and regeneration. The capacitor is connected through a DC/DC converter which includes a controller that controls energy charged or discharged by the capacitor through the DC/DC converter to the load. The controller includes a power running/regeneration operation estimater which estimates an operation pattern including a point of change between power running and regeneration modes of the motor, or DC current supplied to an inverter, or control lever information and previously stored operation pattern information, and a capacitor target voltage calculator which controls an output command value of the DC/DC converter according to the estimated operation pattern so that a capacitor target voltage sequentially decreases in power running and sequentially increases in regeneration. | 12-22-2011 |
20120277944 | DRIVE CONTROL DEVICE FOR WORKING VEHICLE - Provided is a drive control device for a working vehicle, this device controlling motive power to be virtually invariant, even during switching of traveling drive devices, and having high-efficiency characteristics. | 11-01-2012 |
20130304292 | CONSTRUCTION VEHICLE CONTROL APPARATUS AND CONSTRUCTION VEHICLE - A construction vehicle control apparatus is provided including: a motor generator control unit ( | 11-14-2013 |
20130317684 | WHEEL LOADER - A hybrid wheel loader is provided, the hybrid wheel loader achieving high work efficiency even with a short supply of power to be output relative to a vehicle power requirement. | 11-28-2013 |