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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Application No. | Application Title | Issue Date |
| 20120032617 | POWER CONVERTERS A power converter that interfaces a motor requiring variable voltage/frequency to a supply network providing a nominally fixed voltage/frequency includes a first rectifier/inverter connected to a stator and a second rectifier/inverter. Both rectifier/inverters are inter... | 02/09/2012 |
| 20110254473 | ARRANGEMENT AND METHOD FOR CONTROLLING FREQUENCY CONVERTER MODULES An arrangement for controlling frequency converter modules of an electric drive. In the arrangement, the frequency converter modules are arranged to control alternatively a first motor or several motors having less power than the first motor.... | 10/20/2011 |
| 20110234124 | Optimized power demand control system for electrical motors An energy conservation system that realizes optimized power demand control for alternating current electrical motors equipped with variable frequency drives is implemented by switching an electrical motor via bypass systems from a variable frequency and speed drive mode... | 09/29/2011 |
| 20110062900 | IMAGE FORMING APPARATUS, MOTOR CONTROL APPARATUS, AND MOTOR CONTROL METHOD An image forming apparatus includes an engine unit to perform an image forming job, an engine control unit to control operation of the engine unit, a plurality of brushless direct current (BLDC) motors to operate the engine unit, a communication interface unit to receiv... | 03/17/2011 |
| 20110018473 | HVAC/R SYSTEM WITH VARIABLE FREQUENCY DRIVE POWER SUPPLY FOR THREE-PHASE AND SINGLE-PHASE MOTORS An HVAC/R system is configured with a variable frequency drive power supply which provides power to both a three-phase motor and to a single-phase motor. In some embodiments, the three-phase motor is a compressor motor and the single-phase motor is a condenser fan motor... | 01/27/2011 |
| 20110018472 | HVAC/R SYSTEM WITH VARIABLE FREQUENCY DRIVE (VFD) POWER SUPPLY FOR MULTIPLE MOTORS An HVAC/R system is configured with a variable frequency drive power supply which provides power to each of a compressor, a condenser fan, and a blower. In some embodiments, the compressor has a three-phase motor and the condenser fan has a single-phase motor.... | 01/27/2011 |
| 20100308756 | IMAGE FORMING APPARATUS AND METHOD OF CONTROLLING MOTORS THEREOF An image forming apparatus includes a plurality of motors, a controller which generates control signals to control the plurality of motors and output the control signals, and a plurality of motor drivers which control corresponding motors among the plurality of motors i... | 12/09/2010 |
| 20100125371 | SYSTEM AND METHOD FOR FORMING UNIVERSAL CONTROL PANEL A universal control panel for controlling operation of a cooling component. The universal control panel may have a variable frequency drive (VFD) that incorporates an input voltage and frequency sensing circuit; and logic, memory and communications circuits. The VFD acc... | 05/20/2010 |
| 20100013419 | Parallel Motor Controller Architecture Apparatus, methods, and computer storage media provide for the establishment of a parallel motor controller architecture and the dynamic reconfiguration of the architecture to redirect power to various motors according to the changing power load requirements of the moto... | 01/21/2010 |
| 20090201650 | Controller Assemblies For Electric Drive Utility Vehicles Controller assemblies and packaging for electronic control systems of electric motors utilized in utility vehicles or other power equipment. Features of the controller assemblies and packaging described herein allow for, among other things, modularity, scalability, and ... | 08/13/2009 |
| 20090189550 | Method and Apparatus for Controlling A Plurality of Motors Apparatus, having multiple motor modules, has an MCU module. Each motor module has an electronically controlled motor. The MCU module has an MCU and an interface for connecting to a bus from a CPU. In use the MCU module receives control signals from the CPU and in turn ... | 07/30/2009 |
| 20090121661 | Electrical control device An electrical control device is described.... | 05/14/2009 |
| 20090079372 | Electric Motor, Drive System Employing Multiple Electric Motors, and Method for Controlling the Same The motor according to one aspect of the present invention has an output waveform correcting unit for correcting the waveform of the output signal of a magnetic sensor during operation of the electric motor. ID codes for identification purposes are assigned respectively... | 03/26/2009 |
| 20080297073 | Electric Force Transmission Device An electric force transmission device employs a differential device, having at least three rotating members and having two degrees of freedom that, when rotating states of two of the rotating members are determined, a rotating state of the other is determined, and in wh... | 12/04/2008 |
| 20080191647 | Control Circuit for an Arrangement Having at Least Two Direct Current Motors that are Connectable in Parallel to a Direct Voltage System The invention relates to a control circuit for an arrangement having at least two DC motors (10, 12), which can be connected in parallel to a DC voltage system (16, 18), in particular a circuit for controlling at least two motors of a motor vehicle fan. In... | 08/14/2008 |
| 20080131279 | WIND ENERGY PLANT WITH A NACELLE A wind energy plant with a nacelle, the azimuth orientation of which is motor-driven adjustable via an adjustment device, the adjustment device having at least one asynchronous motor with gearbox and at least one holding brake, wherein a control unit for the asynchronou... | 06/05/2008 |
