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| Number | Title | Issue Date |
| 8188692 | Propulsion system A propulsion system is provided. The system includes: a first propulsion vehicle unit including a first tractive bank having at least one traction motor; a second propulsion vehicle unit including: a second tractive bank having at least one traction motor, a contact... | 05/29/2012 |
| 8188693 | DC bus boost method and system for regenerative brake Embodiments of the present invention provide novel techniques for using a switched converter to provide for three-phase alternating current (AC) rectification, regenerative braking, and direct current (DC) voltage boosting. In particular, one of the three legs of th... | 05/29/2012 |
| 8179063 | Traction drive of a rail vehicle for driving and generative braking The invention relates to a traction drive for the driving and generative braking of a rail vehicle or a combination of rail vehicles, a permanent-field synchronous motor and a traction current converter being respectively associated with at least two axles of the ra... | 05/15/2012 |
| 8164283 | System and method for energy capture and distribution Systems and methods are provided for capturing and using power generated by the application of an external force or by an inertial force on a vehicle control device that back-drive or forward-drive an actuator coupled to the control device. An actuator is coupled to... | 04/24/2012 |
| 8148925 | Electric safety braking device with permanent magnet motor and breaking torque control This electric safety braking device for an electric traction vehicle may allow the force/speed characteristic of the vehicle to be improved and includes a rotating electromechanical machine with permanent magnets which has at least one coil with electric terminals, ... | 04/03/2012 |
| 8143824 | Regenerating braking system including synchronous motor with field excitation and control method thereof A regenerating braking system is provided, which includes: a synchronous motor with field coil excitation including a cylindrical stator coil, an inverter electrically connected to the stator coil, a battery electrically connected to the inverter, a rotor coil provi... | 03/27/2012 |
| 8134314 | Electric powered vehicle An electric powered vehicle according to the present invention comprises a battery, an electric power converting device, an electric motor, a drive wheel, a control part, an accelerator, a brake, and a rotation sensor. The control part detects the velocity using the... | 03/13/2012 |
| 8134315 | Method and apparatus for stopping servo motor The servo motor is controlled by a control signal from a control circuit. A common branch line is separated from a positive common line in accordance with information that a safety door is opened. Thus, a first gate drive circuit group is made inoperative. Then, a s... | 03/13/2012 |
| 8120295 | Vehicle power controller A power controller alleviating change of braking feeling caused by reduced regenerative braking force is provided. Energy generated by regenerative braking is used for charging a capacitor. The charging power P(C) is calculated and whether P(C) has reached a maximum... | 02/21/2012 |
| 8098031 | Active brake unit The invention relates to a circuit arrangement for recirculating the energy produced during the braking of electric motors into a supply system. The object of the invention is to implement the feeding of the energy that can be obtained when braking electric motors t... | 01/17/2012 |
| 8080953 | Motor control method and device A control device includes a drive control unit that performs control for driving the electromagnetic coil, and a regeneration control unit that performs control for regenerating power from the electromagnetic coil. The drive control unit includes an excitation inter... | 12/20/2011 |
| 8076878 | Traction drive of a rail vehicle for driving and generative braking with load correction The invention relates to a traction drive for the driving and generative braking of a rail vehicle or a combination of rail vehicles, at least one permanent-field synchronous motor and a traction current converter being associated with at least one axle of the rail ... | 12/13/2011 |
| 8076877 | System and method for controlling power balance in an electrical/mechanical system An electrically commutated actuator and control system has a stator and a shaft that is movable with respect to the stator. A plurality of magnets movable with the shaft provide a first magnetic flux, and an electric current in at least one coil defined on the stato... | 12/13/2011 |
| 8054014 | Control system for an electrical machine In a control system and a method for operating a permanent-magnet electrical machine, when the electrical machine is switched off after one of a functional computer and a monitoring computer of the control system has identified a fault, in order to reduce the brakin... | 11/08/2011 |
| 8054015 | Motor drive apparatus equipped with dynamic braking circuit fault detection capability A motor drive includes a dynamic braking circuit for producing a deceleration torque utilizing a braking force caused by a synchronous motor acting as a generator when the synchronous motor is deenergized. The motor drive apparatus is equipped with a dynamic braking... | 11/08/2011 |
| 8049444 | Soft-start circuit A soft-start circuit includes a power source, a switch, a capacitor and a regeneration brake circuit. The regeneration brake circuit absorbs a return current. The regeneration brake circuit includes a resistor, a diode and a transistor. The resistor is connected bet... | 11/01/2011 |
| 8040084 | Vehicle, control method thereof and braking device During braking, lower limits are set based on an input limit of a battery and a brake pedal position, and the set lower limits limit regenerative torques output from motors. This prevents an output of an excessive braking force and torque shock caused by a hydraulic... | 10/18/2011 |
| 8030861 | Method for controlling a deceleration process of a DC motor and controller The invention is directed to a method for controlling a deceleration process of a DC motor (20), wherein the DC motor (20) is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a powe... | 10/04/2011 |
| 8026681 | Safe electric braking device for printing presses and method of electrically braking an electric drive in a machine processing printing material A method and device for electrically braking an electric drive in a machine for processing printing material, includes a power electronics connected between the electric drive and a DC voltage intermediate circuit. A further electric braking device is switchable bet... | 09/27/2011 |
| 7994745 | Power supply device for vehicles A power supply device for vehicles, output units (10a, 10b) thereof are connected to a motor (5), includes a fuel cell (1) which is connected to the output units (10a, 10b), a capacitor (2)... | 08/09/2011 |
| 7973500 | Control apparatus for motor A normal revolution number calculation unit calculates a normal revolution number of a driving motor generator in every control period, based on a signal from a rotational position sensor. A moving average calculation unit calculates a moving average revolution numb... | 07/05/2011 |
| 7956560 | 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 includes 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... | 06/07/2011 |
| 7940018 | Control system for a hybrid electric vehicle and a method for controlling a hybrid electric vehicle A control system and method for a hybrid electric vehicle. One example control system includes a current calculating module to calculate a current, the current being at least one of a current to drive a motor of the vehicle and a current generated by the motor, and ... | 05/10/2011 |
| 7923950 | Vehicle drive device and method of controlling vehicle drive device A vehicle drive device includes an engine (200), a motor generator (MG1) driven by the engine (200) and generating power, a motor generator (MG2) driving the vehicle and generating electric power at the time of regenerative braking, a bat... | 04/12/2011 |
| 7923951 | Vehicle power controller An ECU executes a program including the steps of: calculating regenerative power value P based on a brake pressure; calculating limit charging power WIN(B) to a battery; calculating limit charging power WIN(C) to a capacitor; when it is determined that regenerative ... | 04/12/2011 |
| 7893637 | Motor drive system In a drive system of an AC motor in which a motor current is feedback-controlled, a motor current command is produced in a normal operation according to a torque command value on an optimum efficiency characteristic line so as to select an optimum current phase maxi... | 02/22/2011 |
| 7868569 | Motor driving apparatus A motor driving apparatus comprises a charge/discharge control circuit for controlling charge to or discharge from a capacitor connected in parallel in a link section between a converter and an inverter, and a current control means for controlling discharge current ... | 01/11/2011 |
| 7812555 | Electric powertrain system having bidirectional DC generator An electric powertrain for use with an engine and a traction device is disclosed. The electric powertrain has a DC motor/generator operable to receive at least a portion of a first mechanical output from the engine and produce a DC power output. The DC motor/generat... | 10/12/2010 |
| 7741795 | Synchronous reluctance machine controller The present invention provides an electro-mechanical energy exchange system with a variable speed synchronous reluctance motor-generator having an all-metal rotor. A bi-directional AC-to-DC electric power converter interconnects the motor-generator with a DC bus. Fi... | 06/22/2010 |
| 7737647 | Rectifier and system for controlling the speed of an electric motor The invention concerns a reversible current rectifier, for connection to part of a polyphase network and to a continuous bus comprising a plurality of rectifier cells each rectifier cell including a rectifying device and a on-way electronic switch connected in anti-... | 06/15/2010 |
| 7683558 | Electric car control apparatus An electric car control apparatus with which it is possible to make the size of equipment small. The control apparatus includes current detectors for respectively detecting currents flowing through collector shoes mounted on a leading car; a no-current indica... | 03/23/2010 |
| 7683559 | Method of recovering energy from the turntable motor in an optical disc drive and optical device The present invention relates to a method of recovering energy from the turntable motor (12) in an optical disc drive comprising a power supply and a circuitry (10) that is capable of selectively feeding a current from the power supply into the motor i... | 03/23/2010 |
| 7605555 | Stabilizer control device for controlling roll rigidity of a stabilizer A stabilizer control device includes: an electric motor having a regenerative function; a stabilizer, connecting a left wheel and a right wheel, that is capable of altering a roll rigidity via the electric motor; vehicle behavior detection device that detects a vehi... | 10/20/2009 |
| 7595599 | Drive regenerative control system Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a cont... | 09/29/2009 |
| 7560884 | Electronic braking and energy recycling system associated with DC brushless motor An electronic braking and energy recycling system associated with a direct current (DC) brushless motor, characterized in that when an electronic braking task is launched, a phase voltage occurred in an inverse mode is applied onto a motor coil corresponding thereto... | 07/14/2009 |
| 7508147 | Variable-frequency drive with regeneration capability An electrical device includes a plurality of single-phase power cells electrically connected to receive power from a source and deliver power to a load. The single-phase power cells include a first rank of regenerative power cells and a second rank of non-regenerati... | 03/24/2009 |
| 7486036 | Power control apparatus, electrically powered vehicle and power control method of power system When surplus power not charged to an electric storage is generated at the time of regenerative braking of a vehicle, a voltage is generated across first and second neutral points using a zero-voltage vector each of first and second inverters and the generated surplu... | 02/03/2009 |
| 7436142 | Method for maintaining a direct voltage at the input of a DC/AC voltage converter, recording medium for this method, and electric vehicle This method maintains a direct voltage at the input of a DC/AC voltage converter in order to maintain an asynchronous motor in a magnetised state, the input of the converter being connected to a DC supply bus of an electric vehicle, and comprises, in a free wheel mo... | 10/14/2008 |
| 7436137 | Drive regenerative control system Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a cont... | 10/14/2008 |
| 7425808 | Vehicle drive system and vehicle provided with the same A rotor is provided with slits each of which serves as a flux barrier blocking a magnetic flux. A direction shown by an arrow is a forward direction along which the rotor rotates when a vehicle moves forward. Each of the slits has a width tapering down from a traili... | 09/16/2008 |
