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| Application No. | Application Title | Issue Date |
| 20120043810 | Method and system for eliminating fuel consumption during dynamic braking of electric drive machines A drive system (100, 100a-c) for an electric drive machine (102, 102a-c) having an engine (104, 104a-c), a generator (106, 106a-c), a motor (108, 108a-c), final driv... | 02/23/2012 |
| 20120013277 | DAMPER SYSTEM FOR VEHICLE A damper system for a vehicle including an electromagnetic damper, wherein the electromagnetic damper includes: (i) an electromagnetic motor; (ii) a motion converting mechanism; and (iii) an external circuit including (A) a first connection passage, (B) a second connect... | 01/19/2012 |
| 20110260661 | Brake Resistor Control An electric drive system comprises a generator, a traction motor, a brake resistor, a bus, and a control unit. The generator, the traction motor, and the brake resistor are coupled electrically to the bus. The control unit is configured to determine a pulse-width-modula... | 10/27/2011 |
| 20110254475 | ELECTRIC BRAKE SYSTEM WITH MAGNETIC LOSS An electric brake system for an electromechanical machine connected to output terminals of an inverter, input terminals of which are supplied by a DC voltage source. The system includes an electrical circuit connected between the input terminals of the inverter and incl... | 10/20/2011 |
| 20110156621 | RAIL VEHICLE WHICH HAS A PERMANENT-MAGNET SYNCHRONOUS MOTOR AS TRACTION MOTOR A rail vehicle has a permanent-magnet synchronous motor as its traction motor. A switching apparatus is arranged between a converter and the traction motor, connects the traction motor to the converter in the driving mode and connects the traction motor to at least one ... | 06/30/2011 |
| 20110057588 | DYNAMIC BRAKING FOR CURRENT SOURCE CONVERTER BASED DRIVE Current source converter (CSC) based motor drives and control techniques are presented in which DC link current is regulated to a level set by the output inverter during dynamic braking operation by pulse width modulation of a braking resistance connection signal to mai... | 03/10/2011 |
| 20110048827 | Hybrid Vehicle With Multiple Electric Drive Systems A hybrid vehicle comprises an engine, a first traction element, a second traction element, a first electric drive system, and a second electric drive system. The engine is coupled operatively to the first traction element via the first electric drive system and to the s... | 03/03/2011 |
| 20110024212 | 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/generator i... | 02/03/2011 |
| 20100320944 | Braking Circuit for a Door Actuator with a Generatively Operable Electrical Motor A braking circuit is adapted to supply generatively produced energy of the motor as load resistance to a bipolar transistor. The braking circuit has a voltage regulator, which controls a voltage, applied to the base terminal of the bipolar transistor to achieve an assoc... | 12/23/2010 |
| 20100188029 | BRAKING SYSTEM FOR THE UNDERCARRIAGE OF AN AIRCRAFT A braking system for an aircraft provided with undercarriage, wherein an axial-flux reversible electric machine is set between the wheel and the frame of the undercarriage; current-dissipating resistors are provided, which can be connected to the windings of the axial-f... | 07/29/2010 |
| 20100133823 | HYBRID BRAKING SYSTEM AND METHOD A wind turbine hybrid braking system is presented. The system includes a generator coupled to a main shaft of the wind turbine for generating and transmitting power. A mechanical brake is coupled to the main shaft for applying reaction torque upon braking of the wind tu... | 06/03/2010 |
| 20100102763 | HYBRID WORKING MACHINE In a hybrid excavator, a generator motor and a hydraulic pump are driven by using an engine as a power source. A battery is charged with power generated by the generator motor. A rotation motor is driven by the generator motor and the battery. The voltage of a DC bus is... | 04/29/2010 |
| 20100066098 | CONTROLLING PROPELLER ROTOR OVERSPEED An engine having at least one stage of propeller rotor blades, and a load, the at least one stage being associated with electrical generation means to generate electricity for the load. The load is switchable into a high load state in the event of an overspeed signal fr... | 03/18/2010 |
| 20100066280 | Electric drive retarding system and method A retarding system for an electric drive machine (100) includes a direct current (DC) link (312), at which a DC voltage is developed, disposed between a rectifier (206) and an inverter (208). A first contactor switch (216) electrically... | 03/18/2010 |
| 20100066281 | 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 rail v... | 03/18/2010 |
| 20100066282 | 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 vehi... | 03/18/2010 |
| 20090309523 | Motor driving device, and control method of motor driving device A motor driving device includes a first power supply terminal, a second power supply terminal, a drive unit that is coupled to the first power supply terminal, the second power supply terminal, and a motor winding, a control unit that controls the drive unit, and a resi... | 12/17/2009 |
| 20090295315 | DYNAMIC BRAKING CIRCUIT FOR A HYBRID LOCOMOTIVE Methods of dynamic braking include two embodiments with braking circuits for vehicles such as, for example, locomotives which are operable down to very low speeds. These circuits can provide a braking force even at zero locomotive speed.... | 12/03/2009 |
| 20090278352 | DYNAMIC ELECTRIC BRAKE FOR A VARIABLE SPEED WIND TURBINE HAVING AN EXCITER MACHINE AND A POWER CONVERTER NOT CONNECTED TO THE GRID A variable speed wind turbine having a doubly fed induction generator (DFIG), includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor of the DFIG and the exciter machine. Thus, the power converter is not directly connect... | 11/12/2009 |
| 20090267545 | METHOD AND ARRANGEMENT IN CONNECTION WITH A BRAKE CHOPPER A method of controlling a brake chopper and a control arrangement, the brake chopper being connected between the positive and the negative rails of an intermediate voltage circuit feeding an inverter bridge, wherein current measurement means are arranged between a DC vo... | 10/29/2009 |
| 20090267544 | MOTOR CONTROL CIRCUIT AND OPERATION METHOD THEREOF A motor control circuit for controlling a motor includes a brake circuit and a control circuit. The brake circuit is for making the motor enter a braking state. The control circuit is for detecting a residual energy of the motor in the braking state. When the residual e... | 10/29/2009 |
| 20090224705 | Rheostatic safety braking device having a bipolar resistive assembly with permanent magnet motor This device is an electric safety brake which is intended for an electric traction vehicle, in particular a rail vehicle comprising: a rotating electromechanical machine (10) having permanent magnets having at least one coil with electric terminals (13, 14, 15... | 09/10/2009 |
| 20090224706 | Safety device for detecting inadequate electric braking and commutation to a safety brake A device is provided for detecting inadequate electric braking and commutation to a safety brake is intended for a vehicle with electric traction, in particular a rail vehicle, which is provided with a traction chain, the system including a first electric, non-safety br... | 09/10/2009 |
| 20090218966 | ELECTRIC DRIVE SYSTEM FOR VEHICLE, ELECTRIC CONTROL SYSTEM FOR VEHICLE, ELECTRIC DRIVE METHOD FOR VEHICLE In an electric drive system for a vehicle, an alternator is driven by an engine to generate electric power which is used to drive a motor to generate a driving force. During a retardation of the vehicle, the motor is operated as an alternator to convert kinetic energy t... | 09/03/2009 |
| 20090200969 | REGENERATIVE BRAKING APPARATUS In a regenerative braking apparatus that is connected to a power supply apparatus that supplies electric power to a load, and consumes regenerative power regenerated from a load side together with other regenerative braking apparatuses that are connected to the power su... | 08/13/2009 |
| 20090174349 | MOTOR DRIVE APPARATUS EQUIPPED WITH DYNAMIC BRAKING CIRCUIT FAULT DETECTION CAPABILITY A motor drive apparatus 1 having a dynamic braking circuit 5 for producing a deceleration torque utilizing a braking force caused by a synchronous motor 4 acting as a generator when the synchronous motor 4 is deenergized, is equipped with a d... | 07/09/2009 |
| 20090102404 | Control Circuit For An Electromotor With Electronic Brake Switch The invention relates to a control circuit for controlling a DC voltage power supply, whereby the control circuit comprises a switching element connected in series to the motor and a bypass switch connected in parallel to the electromotor for braking the electromotor by... | 04/23/2009 |
| 20090058333 | ELEVATING MACHINE CONTROL APPARATUS An elevating machine control apparatus controls an inverter (4) to drive an AC motor (5) connected to the inverter (4) with AC power, and energizes a power generation braking resistor (13) to apply a brake during regenerative operation of the... | 03/05/2009 |
| 20080290825 | POWER ARCHITECTURE AND BRAKING CIRCUITS FOR DC MOTOR-PROPELLED VEHICLE A dynamic braking circuit that can be operated with stability over both high and low speed regimes. This circuit has the advantage of using fewer components than previous circuits. In addition, when in braking mode, the armature and field currents tend to oppose each ot... | 11/27/2008 |
| 20080265813 | DYNAMIC BRAKING LOAD ANALYZER A dynamic braking load analyzer that determines the proper resistance value for a dynamic braking load resistor to be used in combination with a variable frequency drive or servo-drive to accommodate the power dissipated from an induction motor when it is being reduced ... | 10/30/2008 |
| 20060132073 | Braking chopper A braking chopper for dissipating braking power away from the direct-current rails of an AC drive system, said braking chopper being an inverter unit (INU) physically similar to those also used as motor supply devices, consisting of upper- and lower-branch controllable ... | 06/22/2006 |
| 20050040780 | Enhanced system and method for controlling discharge of electric energy from machines Certain exemplary embodiments can comprise a method comprising: receiving electrical energy from a braking system of a vehicle at a working coil, the vehicle comprising a first wheel drive comprising a first electric motor; and via the working coil, transferring the ele... | 02/24/2005 |
