| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 318521000 | FIELD OR SECONDARY CIRCUIT CONTROL | 6 |
| 20090206786 | METHOD OF CONTROLLING A REVERSIBLE ELECTRIC MACHINE - A method of preparing a reversible electric machine with a phase for starting a heat engine of a vehicle that is equipped with an automatic start/stop system, whereby said machine comprises a rotor which is connected to the heat engine. The method comprises the following steps consisting in detecting an action prior to a heat engine start command and applying a magnetizing electric current to the rotor of the machine upon detection of the action. | 08-20-2009 |
| 20090256514 | System for suppressing wheel acceleration after a slip - A power system having a DC electric motor is disclosed. The DC electric motor may include an armature and a field coil electrically connected in series with the armature, the field coil having an input and an output. The power system may also include an additional electrical path. Additionally, the power system may include one or more current-control elements that control one or more aspects of electrical activity in the additional electrical path, which may include, when inductance of the field coil generates a higher voltage at the output than at the input in response to a decrease in electric current through the field coil, allowing electric current to flow from the output, through the additional electrical path, to the input without flowing through the armature. | 10-15-2009 |
| 20110025248 | MULTI-PHASE DC/DC BOOST CONVERTER - A method and an apparatus are provided for balancing current for each of a plurality of similar phases of a DC/DC boost converter. The method includes the step of measuring a voltage drop of each of the plurality of similar phases at predetermined times by measuring the voltage drop across each phase switching device when current is flowing through the switch. The method also includes the steps of calculating current information for each of the plurality of similar phases in response to the voltage drop measured for each of the plurality of similar phases and balancing current for each of the plurality of similar phases in response to the current information of each of the plurality of similar phases. | 02-03-2011 |
| 20130093377 | PWM OUTPUT APPARATUS AND MOTOR DRIVING APPARATUS - A PWM output apparatus includes a calculating circuit configured to calculate an output width of a PWM output signal of a first signal and a second signal, which have phases different from each other, based on a command value of a PWM output. A comparing circuit compares the output width and a reference period which is set longer than a predetermined dead time period. A PWM output signal generating circuit outputs the PWM output signal to a dead time inserting block as a corrected PWM output signal, when a set/clear signal generating circuit outputs the set signal, and carries out a correction of setting the first signal of the PWM output signal to be inactive to output to the dead time inserting block as the corrected PWM output signal, when the set/clear circuit outputs the clear signal. The dead time inserting block corrects the corrected PWM output signal. | 04-18-2013 |
| 318523000 | Plural, diverse or diversely connected or controlled field windings | 2 |
| 20130257336 | Methods and Systems for Controlling a Multiphase Electromagnetic Machine - A multiphase electromagnetic machine may be controlled by controlling currents in one or more phases of the multiphase electromagnetic machine. A control system may be used to determine how much current to deliver to, or extract from, each phase. The control system may use an objective function, subject to one or more constraints, to determine the current. The control system may use position information to determine the objective function, constraints, or both. | 10-03-2013 |
| 318524000 | Convertible number-of-poles type (e.g., 4-pole or 6-pole) | 1 |
| 20100019714 | ALTERNATING CURRENT MACHINE WITH INCREASED TORQUE ABOVE AND BELOW RATED SPEED FOR HYBRID ELECTRIC PROPULSION SYSTEMS - The machine in accordance with the present disclosure is an AC machine whose pole numbers can be switched (from pole p | 01-28-2010 |
