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| Application No. | Application Title | Issue Date |
| 20120126728 | INTEGRATED ELECTRIC MACHINE AND SILICON CARBIDE POWER CONVERTER ASSEMBLY AND METHOD OF MAKING SAME An electric drive system comprising an electric machine comprising a rotor and a stator, a power converter electrically coupled to the electric machine and configured to convert a DC link voltage to an AC output voltage to drive the electric machine, and a single coolin... | 05/24/2012 |
| 20120032626 | POWER SUPPLY WITH ADAPTED OUTPUT VOLTAGE A home automation actuator (100) comprising a motor (101) for maneuvering a mobile element in a building, a command receiver (108), a control unit (110), a single output converter (120), at least one switching member (104) inten... | 02/09/2012 |
| 20120007526 | Rotation Speed Control Circuit, Rotation Speed Control Method and Fan System A rotation speed control circuit for controlling a rotation speed of a fan includes: a rotation speed detector, for generating a rotation speed voltage according to a rotation speed signal corresponding to the rotation speed; a sample and hold element, coupled to the ro... | 01/12/2012 |
| 20110309781 | Motor Control Device And Motor Drive System Provided is a motor control device including a voltage specifying unit which generates a specified voltage signal indicating a target value of an applied voltage to a motor on the basis of a specified current signal indicating a target value of supplied current to the m... | 12/22/2011 |
| 20110243757 | INVERTER CONTROL DEVICE FOR AC MOTOR AND ELECTRIC COMPRESSOR The present invention has an object to detect a three-phase AC motor current with high accuracy only with DC input current measuring means to a three-phase PWM inverter, and reduce resonance of a DC power supply by a ripple current in driving an AC motor with a DC curre... | 10/06/2011 |
| 20110175562 | FAN CIRCUIT A fan circuit controls a speed of a fan. A control chip outputs a pulse width modulation (PWM) signal that changes with the temperature of an electronic device that the fan is mounted in. An input circuit converts the PWM signal into a continual voltage signal. An ampli... | 07/21/2011 |
| 20110121772 | ROLLER MILL AND METHOD FOR SIZE REDUCTION OF GROUND MATERIAL The invention relates to a roller mill having a grinding table, at least one grinding roller and at least two drives with a rotor winding for driving the roller mill and at least one adjustment device for adjusting the motor torque of at least one drive, the adjustment ... | 05/26/2011 |
| 20110085842 | PRINTING APPARATUS A printing apparatus includes: a motor which drives a shaft of a roll body in which a medium is wound, in the feeding direction of the medium; a transport roller which transports the medium fed from the roll body; and a control section which supplies electric power for ... | 04/14/2011 |
| 20110043155 | Wireless Controlled Variable Speed Direct Current Motor A remote and receiver system that allows user control over current output to a direct current motor. The control of current output grants users the ability to control the speed of rotation of a direct current motor. A speed controlled direct current motor can be utilize... | 02/24/2011 |
| 20100327795 | CONVEYOR SYSTEM A conveyor system includes an electric motor to move a conveyor. A voltage determining device is coupled to an alternating-electricity source that supplies alternating electricity to the conveyor system. A power supply appliance supplies power between the electric motor... | 12/30/2010 |
| 20100295494 | ELECTRIC MOTOR DRIVE DEVICE AND METHOD OF CONTROLLING THE SAME A control device controls a switching operation of a switching element such that an AC voltage allowing an AC motor to output torque in accordance with a torque command value is applied to a coil winding of each phase. The control device sets a gate resistance variably ... | 11/25/2010 |
| 20100280714 | MOTOR CONTROLLER AND ELECTRIC POWER STEERING APPARATUS An angle calculator determines an angle of a rotor. An angular speed calculator determines an angular speed of the rotor. A command current calculator determines a command current defined on a dq-axis. An open loop controller determines a command voltage defined on the ... | 11/04/2010 |
| 20100256821 | CONSTANT AIRFLOW CONTROL OF A VENTILATION SYSTEM A ventilation system for providing a substantially constant airflow is disclosed. In one embodiment, a ventilation system includes: a duct; a fan configured to generate an airflow through the duct; a motor configured to drive the fan; an electric current detector config... | 10/07/2010 |
| 20100111710 | Control devices for fuel pump driving motors The present invention includes a control device capable of applying a high voltage to a motor of a fuel pump for an appropriate period of time during a low voltage operation of the motor.... | 05/06/2010 |
| 20100060224 | METHOD OF CONTROLLING SPEED OF BRUSHLESS MOTOR OF CEILING FAN AND THE CIRCUIT THEREOF The present invention relates to a method and a circuit of controlling a speed of a brushless motor of a ceiling fan. The circuit includes a motor PWM duty consumption sampling unit and a motor speed sampling to sense a PWM duty and a speed of the brushless motor. A cen... | 03/11/2010 |
| 20100052591 | MOTOR DRIVING CIRCUIT FOR ADJUSTING SPEED OF A MOTOR BY CHANGING AN OUTPUT VOLTAGE A motor driving circuit for adjusting speed of the motor by changing output voltage is disclosed. One end of the motor is coupled to a variable voltage source. The motor driving circuit includes a motor-driving unit, a control unit and a determining unit. The motor-driv... | 03/04/2010 |
| 20090243530 | Variable voltage output power source for model trains An apparatus that provides electrical power for the operation of analog motors or decoder-equipped motors, said apparatus comprising:
| |
| 20090243531 | INVERTER APPARATUS An inverter apparatus comprises an inverter circuit using pairs of switching elements. The pseudo AC voltage of each phase of this inverter circuit is controlled by pulse modulation using pulses generated by a PWM generator, and the pseudo AC voltages are applied to a p... | 10/01/2009 |
| 20090189559 | ELECTRIC MOTOR PROTECTION SYSTEM An electric motor protection system for protecting an electric motor of a household appliance includes a temperature sensor for sensing a temperature of the electric motor, a motor speed sensor for sensing a speed of the electric motor, a current sensing circuit for sen... | 07/30/2009 |
| 20090167230 | MOTOR DRIVING CIRCUIT AND MOTOR DRIVING METHOD A motor driving circuit includes a detecting unit, a signal control unit, a comparing unit and a driving unit. The detecting unit detects a rotation speed of a motor and thus outputs a detecting signal. The signal control unit generates a reference signal. The comparing... | 07/02/2009 |
| 20090121669 | Motor Drive Device and Motor Drive Device Control Method A motor drive device (100) includes a boost converter (12) boosting a power supply voltage and outputting a boosted voltage; an inverter (14) receiving the boosted voltage from the boost converter (12) and driving a motor (M1); and a c... | 05/14/2009 |
| 20090096403 | MOTOR CONTROL A method of controlling a current of a three-phase electric motor with a three-phase controller. The firing angles are adjusted so as to leave a range of firing angles in which DC components appear.... | 04/16/2009 |
| 20090085506 | FAN DRIVING SYSTEM WITH SAFE DRIVING CURRENT SWITCHING An exemplary fan driving system includes a driving device and a MOSFET group. The driving device includes a first adjustable resistor connected between its first voltage signal input terminal and ground, and a second adjustable resistor connected between its second volt... | 04/02/2009 |
| 20090058341 | Control method and system with feedback indicative of load flux Systems, methods, and devices are disclosed, including an induction-motor controller having a phase path; a solid-state switch interposed on the phase path; and a controller coupled to the solid-state switch. In certain embodiments, the controller is configured to switc... | 03/05/2009 |
| 20090045762 | MOTOR DRIVE CIRCUIT, METHOD, AND COOLING DEVICE USING THE SAME A drive signal generation circuit generates drive signals that control ON and OFF states of transistors of a H-bridge circuit, in accordance with a target value of torque. A driver circuit alternatively turns ON and OFF high side transistors, and low side transistors of... | 02/19/2009 |
| 20090027017 | Circuit arrangement for the regulation of a current through a load A circuit arrangement (1) for the regulation of a current (IL) through a load (RL) comprises: a resistance (RS), through which a load current (IL) flows and across which a voltage (VS) drops, which serves as ... | 01/29/2009 |
| 20090015185 | Semiconductor Module, and Hybrid Vehicle Drive Device Including the Same A bus bar constitutes a power line and another bus bar constitutes an earth line. The bus bars are layered in the normal direction of an insulating substrate via an insulating member. Here, the bus bar positioned at the upper side is formed by a metal member and the bus... | 01/15/2009 |
| 20090009122 | FAN MOTOR SPEED CONTROL CIRCUIT, FAN APPARATUS, AND ELECTRONIC APPARATUS A fan motor speed control circuit includes: a driving circuit configured to drive a fan motor so as to run at a rotation speed corresponding to a drive signal; a comparison circuit configured to output a comparison signal for matching a rotation speed of the fan motor w... | 01/08/2009 |
| 20090001915 | METHOD AND APPARATUS FOR ACTIVE VOLTAGE CONTROL OF ELECTRIC MOTORS Methods and apparatus are provided for dynamic voltage control of electric motors. An inverter provides an output voltage to an electric motor based on a gate voltage. The method includes determining a speed of the electric motor and modifying the gate voltage based on ... | 01/01/2009 |
| 20080317446 | Electronic module and arrangement for signal transmission with the former The invention concerns an electronic module for a motor vehicle, in particular a fan regulator (4″) with a control input (S) for a signal, in particular a pulse width modulated signal, transmitted via a signal line (3). The electronic module is designed ... | 12/25/2008 |
| 20080297089 | Method for Operating a Two-Phase Rotary Current Controller A method is disclosed for operating a two-phase rotary current controller. In order to optimize the operation of a two-phase rotary current controller, magnitudes of a parameter that can be varied in both controllable phases of a two-phase rotary current controller is m... | 12/04/2008 |
| 20080297090 | DRIVE CONTROL CIRCUIT FOR ELECTRIC MOTOR AND ELECTRIC MOTOR EQUIPPED WITH SAME The drive control circuit (200) includes a driver circuit (250) for intermittently supplying the magnetic coils with a supply voltage VSUP; a switching signal generating circuit (240) that generates a switching signal supplied to the driver circuit ... | 12/04/2008 |
| 20080284369 | Power converters The present invention is directed to a power converter that can be used to interface a motor 4 that requires variable voltage at variable frequency to a supply network (bus) providing a nominally fixed voltage and nominally fixed frequency. The power converter in... | 11/20/2008 |
| 20080265820 | Motor driving circuits A motor driving circuit comprising first and second input voltage source sets, a reference voltage source, first and second voltage level shift units, a logic unit, and an output voltage terminal. The first input voltage source set provides a first input voltage set. Th... | 10/30/2008 |
| 20080238350 | Single phase motor driving device A device for driving a single phase motor is provided. The device controls the rotation of the single phase motor according to at least a control signal. The single phase motor driving device includes a control apparatus and a detection apparatus. The control apparatus ... | 10/02/2008 |
| 20080122392 | METHODS AND APPARATUS FOR PROVIDING MOTOR CONTROL SIGNALS A method for providing a compatible interface between a motor control circuit and a system controller is described. The method includes determining which signals in the interface have incompatible voltage requirements, and inserting a series resistance in an interface e... | 05/29/2008 |
| 20080094017 | 3-Phase Solar Converter Circuit and Method A conversion circuit for converting solar power into an alternating 3-phase maims (M) comprises a converter (conv) for converting the power from a solar cell (sc) into an unipolar converter output voltage provided between a first and a second converter output ter... | 04/24/2008 |
| 20080048602 | Vehicle drive In an electric or hybrid vehicle drive having an electric machine, which can be operated either as a motor or as a generator, and includes an electronic power system, wherein a power source is connected to a direct voltage terminal of the electronic power system, and th... | 02/28/2008 |
| 20080042607 | Electric tool switch mechanism An electric tool switch mechanism includes a trigger switch for operating to at least rotate or stop a DC motor; and a power switch connected between the DC motor and a battery power source and closed when a pressed amount of the trigger switch exceeds a predetermined t... | 02/21/2008 |
| 20070296363 | 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-para... | 12/27/2007 |
