| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 180650285 | Control of motor or generator specific to hybrid operation | 38 |
| 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 |
| 20090071736 | Vehicle control system and method - A vehicle control system calculates driver-required wheel torque, correction wheel torque to stabilize vehicle motion, required output shaft torque, alternator base torque, target engine torque and alternator torque to realize the output shaft torque. The required output shaft torque is required to realize vehicle motion, and the alternator base torque is required to maintain amounts of electric power in batteries. In order to realize the torque including wide band frequency torque, a torque division unit divides the sum of the torque into each torque actuator response frequency torque. Therefore, the target alternator torque is calculated by the alternator base torque to maintain electric power in batteries and high frequency band torque required by vehicle motion control. | 03-19-2009 |
| 20090114464 | Control apparatus for vehicular power transmitting system - A control apparatus for a vehicular power transmitting system including (a) an electrically controlled differential portion operable to distribute an output of a drive power source of a vehicle to a first electric motor and a power transmitting member, (b) a second electric motor connected to a power transmitting path between an output shaft of the drive power source and a drive wheel of the vehicle, (c) a coupling device provided in the electrically controlled differential portion and operable to selectively switch the differential portion between a differential state and a non-differential state, and (d) an electric-energy storage device operable to store and discharge an electric energy supplied from the first or second electric motor, the control apparatus including a torque-receiving-proportion control portion configured to control a proportion of torque values of a reaction torque corresponding to a torque acting on a predetermined member of the electrically controlled differential portion, which torque values are respectively received by the first electric motor and the coupling device, such that a ratio of the torque value received by the coupling device, with respect to the reaction torque, increases with an increase of a difference of an electric energy amount consumed by the second electric motor from an electric energy amount generated by the first electric motor. | 05-07-2009 |
| 20090120701 | Rotating electrical machine control system and vehicle drive system including rotating electrical machine control system - A rotating electrical machine includes a DC power supply; a rotating electrical machine; an inverter provided between the DC power supply and the rotating electrical machine to control current flowing in the rotating electrical machine; and a control device that: determines a rotational speed as a rotational speed requested for the rotating electrical machine and a requested torque as a torque requested for the rotating electrical machine; and limits a torque of the rotating electrical machine. The inverter is operated based on the rotational speed and the requested torque determined by the control device, and the control unit changes a limit of the torque in accordance with an inverter voltage which is a voltage applied to a frequency conversion portion provided in the inverter. | 05-14-2009 |
| 20090133947 | MOTOR CONTROL APPARATUS - An object of the present invention is to provide a motor control apparatus that can perform an abnormality diagnosis of current sensors and achieve cost reduction. When the outputs from three current sensors, which detect individual phase currents of a 3-phase AC current supplied from an inverter to a 3-phase AC motor, indicate that the sum of the individual phase currents of the 3-phase AC current is greater than a predetermined value, a sensor abnormality judgment unit of a motor control unit judges that one of the three current sensors is abnormal. The sensor abnormality judgment unit identifies an abnormal current sensor, which is one of the three current sensors, and performs calculations in accordance with the remaining two normal current sensors to output the current in the phase detected by the abnormal current sensor. | 05-28-2009 |
| 20090145679 | Method for controlling the operation of a generator in a vehicle power train, and a vehicle power train - A method for controlling the operation of a generator connected to an electrical energy storage unit in a vehicle power train. An engine is connected to a drive shaft of the vehicle through a transmission and with an interrupting device with which the transmission of torque from the engine to the drive shaft is interruptible. When the transmission of torque between the engine and the drive shaft is interrupted the generator is driven from the drive shaft. | 06-11-2009 |
| 20090152030 | Apparatus and Method for Electric Vehicle Utilizing Dissimilar Electric Motors - An Electric Vehicle is equipped with a plurality of Electric Motors, with at least one motor optimized for operation in one vehicle speed range and at least another motor optimized for operation in a different vehicle speed range. Under acceleration, at any instance in time a majority proportion of power is directed to the motor that is best optimized for the current vehicle speed. Under deceleration, at any instance in time a majority proportion of regenerative braking is drawn from the motor that is best optimized for the current vehicle speed. Motors may be mechanically coupled to the same driven axle or to different driven axles. | 06-18-2009 |
| 20090188733 | SYSTEM AND METHOD FOR OPERATING AN ELECTRIC MOTOR BY LIMITING PERFORMANCE - A method and system for limiting motor performance in a hybrid electric vehicle system. During a condition in a primary drivetrain, the method limits performance of an electric motor used in an auxiliary drivetrain to control energy consumed from a battery in the auxiliary drivetrain. A calculation or measurement is made to determine available battery energy remaining in the battery after the condition. The performance of the electric motor is then limited based on the available battery energy. | 07-30-2009 |
| 20090242293 | Rotating electrical machine control system and vehicle drive system - A rotating electrical machine control system includes a rotating electrical machine, a frequency conversion portion, a voltage conversion portion, a torque limitation portion, and an abnormality detection portion. The torque limitation portion limits generation of a positive torque in a region of less than a rotational speed lower limit threshold value where a rotational speed of the rotating electrical machine is less than zero, and sets a region in which the positive torque is generated to a region of the rotational speed lower limit threshold value or greater, and the torque limitation portion limits generation of a negative torque in a region of greater than a rotational speed upper limit threshold value where the rotational speed of the rotating electrical machine is greater than zero, and sets a region in which the negative torque is generated to a region of the rotational speed upper limit threshold value or less. | 10-01-2009 |
| 20090242294 | ELECTRIC DRIVE VEHICLE - An electric drive vehicle having a power generator coupled to an engine, a first power converter connected with the power generator for converting the AC power generated by the power generator to DC power, a second power converter connected with the first power converter, for converting the DC power to AC power, a power consuming device for consuming the DC power, connected to a DC circuit between the first and second power converters, an electric motor connected with the second power converter, and wheels driven by the electric motor, wherein the vehicle has a first control mode for controlling the output of the electric motor and a second control mode for controlling the power consumed by the power consuming device, and the second control mode performs such control that the operations of the second power converter and the electric motor in the first control mode are simulated. | 10-01-2009 |
| 20090250279 | POWER SYSTEMS FOR HYBRID ELECTRIC VEHICLE (HEV) - A hybrid electric vehicle (HEV) power system is provided that includes a vehicle electrical system (VES), an inverter-controller unit (ICU) and an AC electric motor/generator unit (MGU). The VES includes a first DC voltage source and a second DC voltage source coupled in series with the first DC voltage source. The VES also includes a first electrical load coupled across the first DC voltage source, and a second electrical load coupled across the second DC voltage source. The ICU is coupled across the first DC voltage source and the second DC voltage source and is designed to convert DC power from the first DC voltage source and the second DC voltage source to generate AC power for the AC electric MGU. Together the DC voltage sources can replace a conventional high-voltage DC voltage source. In some implementations, techniques are provided for “charge balancing” the first DC voltage source and the second DC voltage source without expensive devices. | 10-08-2009 |
| 20090250280 | HYBRID VEHICLE - To provide a hybrid vehicle which is capable of improving durability and efficiency of an electric motor when the electric motor is mechanically connected to an engine, thereby making it possible to improve marketability thereof. In a hybrid vehicle | 10-08-2009 |
| 20090255744 | ELECTRIC MOTOR DRIVE APPARATUS AND VEHICLE INCLUDING THE SAME - When fail signals from first and second inverters are rendered inactive, i.e., when all inverters are proper, an ECU renders first and second shut down permit signals active for output to first and second AND gates regardless of the operating state of motor generators. The first AND gate takes an AND operation of the fail signal from the second inverter and the first shut down permit signal to output a shut down signal to the first inverter. The second AND gate takes an AND operation of the fail signal from the first inverter and the second shut down permit signal to provide a shut down signal to the second inverter. | 10-15-2009 |
| 20090308675 | GENERATOR DRIVING DEVICE, HYBRID VEHICLE, AND CONTROL METHOD FOR GENERATOR DRIVING DEVICE - In order to securely prevent, even where a boosting unit is provided, a rush current from arising when a contactor is turned on during a transient state, the voltage of a surge absorbing condenser is controlled so that the voltage difference between the power source capacitor and surge absorbing condenser falls in a predetermined range. The control is performed in the following manner: of the two voltage source inverters of the AC-coupled bi-directional DC-DC converter composing a voltage converter as a boosting unit, only the one that is not connected in parallel with a power source capacitor is activated to perform a chopping operation while the generator is operated with the contactor off. | 12-17-2009 |
| 20090314564 | POWER OUTPUT APPARATUS, METHOD OF CONTROLLING THE SAME, AND VEHICLE - A power output apparatus including a power source, an electric motor and a connecting and disconnecting device, and a method of controlling the power output apparatus, are provided. When load driving force is applied from the power source to a power shaft in a condition where the power shaft and a driveshaft are disconnected from each other by the connecting and disconnecting device, lock control is executed to control the motor by fixing a direction of a magnetic field of a stator so as to restrict rotation of a rotor. When the rotor rotates during execution of the lock control, rotation retardation control is executed to control the motor by rotating the direction of the stator magnetic field in accordance with rotation of the rotor, so that driving force is applied from the motor to the power shaft in a direction opposite to that of the load driving force as driving force applied from the power source to the power shaft. | 12-24-2009 |
| 20090314565 | CONTROL APPARATUS FOR VEHICULAR POWER TRANSMITTING SYSTEM - A control apparatus for a hybrid vehicle power transmitting system wherein an electric motor is connected through a step-variable transmission to a drive-wheel-side output shaft to which a drive force of a main drive power source is distributed by a power distributing device, which control apparatus is configured to reduce a shifting shock upon a shifting action of the step-variable transmission wherein when
| 12-24-2009 |
| 20090321166 | METHOD FOR OPERATING A HYBRID DRIVE FOR A VEHICLE - A method for operating a hybrid drive for a vehicle including at least one internal combustion engine and at least one electric motor, the internal combustion engine and the electric motor being operable in a hybrid mode, which enables a temporary power boost by supplementing the internal combustion engine output with electric motor output. The temporary power boost is allowed only until reaching a limit velocity (V | 12-31-2009 |
| 20100000815 | Control Method of Electromotor - A control method of the electromotor comprises: setting a target alternating axis current based on the rotor angular velocity of the electromotor and a target direct axis current based on the torque of the motor; simultaneously detecting three-phase currents and current rotor position angle of the electromotor; converting the three-phase currents to an actual alternating axis current and an actual direct axis current by Park and Clark conversions; inputting the difference between the target current and the actual current to a current loop, outputting the required direct axis current and the required alternating axis current; determining the three phase voltages according to the required direct axis current and alternating axis current and the angle of the electromotor rotor position; obtaining PWM control waveform through three-phase voltages, wherein said PWM control waveform is configured to control the conversion from direct current to alternating current and drives the electromotor. | 01-07-2010 |
| 20100006359 | Hybrid vehicle, method of controlling hybrid vehicle, program for causing computer to execute the method of controlling hybrid vehicle, and computer readable storage medium having the program stored therein - The present invention contemplates a hybrid vehicle capable of changing an amount to be charged to an electric power storage device in accordance with whether it is externally charged. The hybrid vehicle includes a control device inquiring of an occupant of the vehicle whether the occupant has an intention to go to a charging location for example at home. If so, the control device sets a target value for the electric power storage device's amount of a state (SOC) to have a value smaller than when the occupant does not have an intention to go to the charging location. This allows as much energy as possible to be received at the charging location and a vehicle can thus be obtained that less depends on an internal combustion engine and contributes to environmental protection. | 01-14-2010 |
| 20100006360 | CONTROL SYSTEM AND METHOD FOR HYBRID VEHICLE - The present invention is to provide a control system for a hybrid vehicle in which, even if during traveling of the hybrid vehicle, a battery defect arises in a high-voltage power source, battery-less emergency traveling can be achieved over a sufficiently long distance, and the steering assist force can be effectively prevented from changing rapidly during traveling. The control section includes high-voltage power source defect processing unit. During execution of a mode in which the high-voltage power source, is reduced so that the reduced voltage is supplied to an electric power steering device (EPS), when a defect occurs in the high-voltage power source, the high-voltage power source defect processing unit shifts to a mode in which the low voltage of a low-voltage power source is increased so that the increased voltage is supplied to the EPS. The high-voltage power source defect processing unit then disconnects the high-voltage power source and the driving circuit from each other. Thereafter, the control section shifts to a mode in which a voltage corresponding to power generated by a generator is reduced so that the reduced voltage is supplied to the EPS, while allowing the generator to drive a traveling motor. | 01-14-2010 |
| 20100044132 | CONTROL DEVICE OF VEHICULAR DRIVING APPARATUS - A control device of a vehicular driving apparatus is provided, which can restrain an unnecessary rotational change of a first electric motor can be restrained when a shifting in a differential portion and a shifting in a transmission portion are overlapped in shifting periods. Upon executing the shiftings of a differential portion and an automatic transmission portion | 02-25-2010 |
| 20100051368 | MULTI-POWER SOURCE LOCOMOTIVE SELECTION - Various control options are applied for selecting the number of operating power sources for a multi-power source vehicle having a number of prime power sources and, optionally including energy storage systems. This system and method are applicable to large vehicles such as locomotives, mining trucks, tugboats and large cranes. Selectable operating modes are provided for different locomotive speed ranges and work loads. The system and method are based on a common DC bus electrical architecture so that prime power sources need not be synchronized. Multiple-engine locomotives are included in which the engine systems may be electrically connected in parallel or in series or in combinations of parallel and series to a DC bus. | 03-04-2010 |
| 20100059300 | MANUALLY OPERATED ELECTRICAL CONTROL AND INSTALLATION SCHEME FOR ELECTRIC HYBRID VEHICLES - A hybrid vehicle system facilitates operator control over electric power generation and use. The system features a motor/generator that can be mounted to an output of a transmission of the vehicle. | 03-11-2010 |
| 20100071975 | POWER OUTPUT APPARATUS, VEHICLE WITH POWER OUTPUT APPARATUS, AND CONTROL METHOD OF POWER OUTPUT APPARATUS - An engine, motors MG | 03-25-2010 |
| 20100089673 | Creep mode propulsion for stop-start hybrid vehicles - A control module including a traffic determination module that determines when a vehicle is in traffic and that selectively generates a traffic signal. The control module also having a creep enable module that generates a creep enable signal based on the traffic signal. The control module further including a power control module that selectively generates an internal combustion engine (ICE) disable signal. The power control module also commands a motor generator unit to produce power based on the creep enable signal as a driver reduces brake pedal pressure. | 04-15-2010 |
| 20100116574 | COST EFFECTIVE CONFIGURATION FOR SUPERCAPACITORS FOR HEV - A rechargeable energy storage system (RESS) for a hybrid electric vehicle includes a power supply module that includes at least one battery. A startup module includes N supercapacitors arranged in parallel with the at least one battery, wherein N is an integer greater than or equal 1, and an adjustable power supply arranged in series with at least one of the N supercapacitors and in parallel with the at least one battery, wherein the adjustable power supply maintains a voltage across the N supercapacitors below a predetermined voltage. | 05-13-2010 |
| 20100116575 | ELECTRICALLY POWERED VEHICLE, CONTROL DEVICE FOR ELECTRICALLY POWERED VEHICLE, AND COMPUTER READABLE MEDIUM - An electrically powered vehicle includes: a boost converter that boosts a power supply voltage and outputs a boosted voltage; an inverter that receives the boosted voltage from the boost converter and controls a rotating electric machine for travel; and a control device that performs control to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both an accelerator and a brake are not operated to be on. | 05-13-2010 |
| 20100140002 | DRIVE CONTROL APPARATUS FOR ROTATING ELECTRIC MACHINES AND VEHICLE - First and second motors have structures different from each other. A control device estimates a first magnet temperature of the first motor and a second magnet temperature of the second motor and controls a drive unit based on the first and second magnet temperatures. The control device estimates the first magnet temperature using a first parameter (the temperature of cooling oil of the first and second motors) and estimates the second magnet temperature using the temperature of the stator of the second motor. Since an appropriate parameter is selected from among a plurality of parameters concerning the state of the first and second motors, the first and second magnet temperatures can be estimated more accurately. | 06-10-2010 |
| 20100140003 | ELECTRIC MOTOR CONTROL DEVICE, DRIVE DEVICE AND HYBRID DRIVE DEVICE - An electric motor control device includes an inverter that supplies an output of a primary-side DC power supply to an electric motor to control driving of the electric motor; a converter that includes a voltage increasing power supply device that increases a voltage of the primary-side DC power supply to supply the inverter with the increased voltage as a secondary voltage, and a regenerative power supply device that reversely supplies regenerative power from the inverter to the primary-side DC power supply; a secondary-side target voltage determination unit; a converter control unit; and an electric motor control unit. | 06-10-2010 |
| 20100181126 | Electric car battery charging system - A battery charging system useful for use in a hybrid or an all electric vehicle. The system includes a computer that controls all the multiple generators in the vehicle. The generators are driven by all four wheels of the vehicle plus a small gasoline engine from time to time. The system takes advantage of the brake rotor discs by driving a generator by each of the brake discs in direct contact therewith or by induction. The charging system could also be operated from a disc that is driven from an axle of the vehicle. In this case the extra disc would be mounted onto the axle by way of a housing. The computer controls the charge of the main battery but also could provide charging electricity to an independent battery that is in a standby mode. In this manner very little or no fossil fuel is being consumed by the vehicle no matter what the speed it is being operated at. The system includes a small gasoline engine which is controlled by the computer to alternatingly charge the master battery or a stand-by battery as well as a third independent battery that supplies power to various other minor operating needs of the vehicle | 07-22-2010 |
| 20100200319 | CONTROL METHOD OF ELECTRIC ROTATING MACHINE IN HYBRID-TYPE POWER TRANSMISSION - A hybrid-type power transmission in which an internal combustion engine and an electric rotating machine are used as a source of power for driving an output shaft through a change-speed mechanism. In the hybrid power transmission, the operation of the electric rotating machine is controlled in such a manner that the rotation speed of a rotor-side rotary member is synchronized with the rotation speed of an input-side or output-side rotary member when the rotation speed of the rotor-side rotary member becomes higher in a predetermined difference than the rotation speed of the input-side or output-side rotary member in shifting operation of a sleeve coupled with the rotor-side rotary member. | 08-12-2010 |
| 20100263953 | MOTOR DRIVE APPARATUS, HYBRID DRIVE APPARATUS AND METHOD FOR CONTROLLING MOTOR DRIVE APPARATUS - If any short-circuit failure occurs in an inverter, then a motor generator is used to execute a safety driving. If the rotational speed of a motor generator calculated from a detection value of a position sensor exceeds a predetermined reference rotational speed during the safety driving, an MGECU turns on all of the switching elements connected in parallel to a switching element in which a short-circuit failure occurs with respect to a power supply line. If the rotational speed is equal to or less than the reference rotational speed, the MGECU turns on only the switching elements connected in series to the switching element in which the short-circuit failure occurs. In this way, any excessive currents can be prevented from occurring in the inverter without restricting the safety driving. | 10-21-2010 |
| 20110094810 | Energy retention and release onboard recharging process - This patent concerns the alternating and recharging of an energy retention device. These devices usually retain electrical energy. There are other devices which retain other types of energy to drive a motor in powering a device or a machine. The use of electricity is being applied to this description as an energy source by recharging these energy retention devices once they are depleted of electrical energy in powering an electrical motor in an electrical device or machine. Then, alternating their use as they are recharged creates a longer distance of travel and operation. In an alternating and recharging process these energy devices are utilized until depleted of energy; at that stage, they are recharged. The recharge stage is accomplished by an independent power source. The retention and release of energy in and from a device, which is then recharged by an energy creation source, creates a cycle of operation to which energy is supplied to a motor to drive a machine or device. The cycle repeats itself as long as the energy is delivered to the independent recharging device. | 04-28-2011 |
| 20110127095 | CONTROL DEVICE FOR POWER TRANSMISSION DEVICE FOR VEHICLE - When an engine is driven on a different type of fuel (for example, ethanol-containing fuel) from a reference fuel (for example, gasoline) and the engine torque is thus greater than that produced when the engine is driven on the reference fuel, a differential state control device expands a non-differential range compared to that at the time when the reference fuel is used. Thus, in the case where a plurality of types of fuel including the reference fuel are supplied to the engine, the advantage of switching a power distribution mechanism between a differential enabled state and a non-differential state can be fully utilized in correspondence with engine torque characteristics which may vary in accordance with the type of fuel for the engine. As a result, the fuel consumption rate can be reduced in correspondence with the plurality of types of fuel supplied to the engine, for example. | 06-02-2011 |
| 20110162900 | VEHICLE-USED COMPOSITE BRAKING/ACCELERATING SYSTEM - A vehicle-used composite braking/accelerating system is provided. In accordance with the composite braking/accelerating system, a movable motor is provided adjacent to a wheel of the vehicle. The movable motor is electrically connected to a control circuit and a battery. When the vehicle is moving and the moving vehicle is braked to decelerate, in which the driver of the vehicle slightly steps on the braking device, the control circuit instructs the movable motor to execute a generator function and drives the actuator to operate. The movable motor includes a coil member and a magnetic member. When the coil member and the magnetic member are correspondingly positioned and relatively rotated, the movable motor generates electrical energy, and saves the generated electrical energy into the battery. In such a way, the kinetic energy of the moving vehicle is transformed into electrical energy for saving the fuel consumption. | 07-07-2011 |
| 20110290573 | VEHICLE, METHOD AND APPARATUS FOR CONTROLLING VEHICLE - A vehicle incorporates a first motor generator and a second motor generator. A first inverter supplies a current to the first motor generator. The vehicle is controlled to travel using only the second motor generator as a driving source. In a state where the vehicle is traveling using only the second motor generator as a driving source, the first inverter supplies a current to the first motor generator such that a q-axis current becomes zero and a d-axis current flows in the first motor generator. | 12-01-2011 |
| 20150047916 | ELECTRICALLY DRIVEN WORKING VEHICLE - There is provided an electrically driven working vehicle that needs reduced assisting power from an electrical storage device when accelerating subsequent to modulation and still obtains acceleration at least equivalent to that of torque converter vehicles. | 02-19-2015 |
| 20190143953 | METHOD AND APPARATUS FOR STARTING ENGINE OF MILD HYBRID ELECTRIC VEHICLE | 05-16-2019 |
