Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 318/807
Name: Electricity: motive power systems > Induction motor systems > Primary circuit control > Frequency control
Description: Subject matter wherein the circuit connected to the primary member of the motor includes means to regulate the frequency of the current or voltage supplied to the primary member.










Sub-classes under this class:

Class Number Class Name Patents
318/808 With voltage magnitude control 338
318/809 With voltage phase angle control 342
318/810 With voltage pulse time control 210


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
8681516 Inverter with short circuit protection Mar. 25, 2014
8638054 Sensorless lost/found rotor detection for permanent magnet motors Jan. 28, 2014
8638154 System clock monitoring apparatus and motor control system Jan. 28, 2014
8629634 Apparatus and method for optimizing current use during control of multiple motors Jan. 14, 2014
8624533 Inverter power generator Jan. 7, 2014
8587239 Apparatus and method for sensorless identification of rotating electrical equivalent circuit parameters of a three-phase asynchronous motor Nov. 19, 2013
8575878 Energy converter Nov. 5, 2013
8575879 Methods, systems and apparatus for controlling a multi-phase inverter Nov. 5, 2013
8575882 Power layer generation of inverter gate drive signals Nov. 5, 2013
8577527 Drive control device for a vehicle Nov. 5, 2013
8547072 Phase control apparatus Oct. 1, 2013
8541972 Method for suppressing speed ripple by using torque compensator based on activation function Sep. 24, 2013
8531150 DCDC converter Sep. 10, 2013
8525464 Rotation detecting apparatus and rotation detecting system Sep. 3, 2013
8508181 Adjustable frequency drive and system Aug. 13, 2013
8432112 Sensorless lost/found rotor detection for permanent magnet motors Apr. 30, 2013
8400089 Control electronics for brushless motors Mar. 19, 2013
8390229 Washing machine with improved method of braking to a non-zero speed Mar. 5, 2013
8384337 Conveyor system Feb. 26, 2013
8373379 Methods and devices for estimation of induction motor inductance parameters Feb. 12, 2013
8362723 Motor drive circuit Jan. 29, 2013
8362732 Motor phase winding fault detection method and apparatus Jan. 29, 2013
8362733 Output filter and motor drive system including the same Jan. 29, 2013
8340848 Method and system for sensorless control of an electric motor Dec. 25, 2012
8339093 System and method of dynamic regulation of real power to a load Dec. 25, 2012
8339090 Current control apparatus operable in wet environment Dec. 25, 2012
8339078 Apparatus and method for providing information relating to a motor Dec. 25, 2012
8334670 Method and apparatus to monitor an electric motor control circuit Dec. 18, 2012
8314586 System for adapting the resonant operation of a personal care appliance during the lifetime thereof Nov. 20, 2012
8310102 System and method for power conversion Nov. 13, 2012
8310183 Motor control device Nov. 13, 2012
8310196 Method and apparatus for failsafe monitoring an electromotive drive Nov. 13, 2012
8305019 Torque controller for permanent magnet synchronous motor Nov. 6, 2012
8294411 Sensorless induction motor control device having function of correcting slip frequency of motor Oct. 23, 2012
8294413 Induction motor control systems and methods Oct. 23, 2012
8288978 Motor driver Oct. 16, 2012
8283880 Motor drive device with function of switching to power regenerative operation mode Oct. 9, 2012
8283885 Driver circuit Oct. 9, 2012
8278865 Control device Oct. 2, 2012
8269450 Winding switching apparatus and winding switching system Sep. 18, 2012
8258739 Power converter Sep. 4, 2012
8253370 Microcomputer for controlling ultrasonic motor, and method for controlling ultrasonic motor Aug. 28, 2012
8248013 Fan device with improved speed control module and plural fan system constructed thereby Aug. 21, 2012
8242735 Method and system for temperature-based power converter control Aug. 14, 2012
8232760 System and method of dynamic regulation of real power to a load Jul. 31, 2012
8217597 Drive circuit for a capacitive load Jul. 10, 2012
8207700 Electric motor drive Jun. 26, 2012
8207692 Mooring winch and a method for controlling a cable of a mooring winch Jun. 26, 2012
8198848 System and method for compensating characteristics of a fan Jun. 12, 2012
8183817 Apparatus for switching windings of AC three-phase motor May. 22, 2012

1 2 3 4 5 6 7 8 9 10 11 12 13 14










 
 
  Recently Added Patents
Signal apparatus for facilitating safe backup of vehicles
Fishing apparatus
Disk array apparatus and firmware update method therefor
Flash multi-level threshold distribution scheme
Synthesizing VHDL multiple wait FSMS into RT level FSMS by preprocessing
Use of beta-adrenoceptor antagonists for the manufacture of a medicament of the treatment of disorders of the outer retina
Image sensor pixels with junction gate photodiodes
  Randomly Featured Patents
Splicing asymmetric reflective array for combining high power laser beams
Implantable sensor and system for in vivo measurement and control of fluid constituent levels
Marine fouling control
Architecture for a digital copier and printer for handling print jobs associated with a network
Fuel cell stacks for ultra-high efficiency power systems
Method and system of noise-adaptive motion detection in an interlaced video sequence
Glove
Manual air damper control for a refrigerator
Card file
Cholesteric liquid crystal composition, color-forming liquid crystal composite product, method for protecting liquid crystal and color-forming liquid crystal picture laminated product