Featured patents

Accuracy of Rotor Position Detection Relating to the Control of Brushless DC Motors
US 08674639 B2, March 18, 2014, Thomas Freitag et al. / Melexis Technologies NV (Tessenderio, BE)
A method of monitoring the back EMF in a floating phase of a BLDC…

Brushless Three Phase Motor Drive Control Based on a Delta Zero Crossing Error
US 08487572 B2, July 16, 2013, James P. McFarland et al. / Standard Microsystems Corporation (Hauppauge, US)
A method for operating a motor, wherein the motor comprises a plurality…

Control Method for Sensorless Motors With Energy Recovery Ability
US 08450959 B2, May 28, 2013, Yee-Pien Yang et al. / Industrial Technology Research Institute (Hsin-chu, TW)
A method for controlling a sensorless motor with energy recovery ability,…

Control of Sinusoidally Driven Brushless DC (BLDC) Motors
US 08461789 B2, June 11, 2013, Thomas Freitag et al. / Melexis Technologies NV (Tessenderlo, BE)
A method of controlling a sinusoidally driven brushless DC (BLDC) motor…

Electric Device Comprising an Alternating Current Electric Motor and a Control Inverter and a Method for Measuring the Electromotive Force of This Device
US 08618758 B2, Dec. 31, 2013, Luis de Sousa et al. / Valeo Systemes de Controle Moteur (Cergy Saint Christophe, FR)
An electric device comprising:…

Electric Drive and Method for Controlling It
US 08476855 B2, July 2, 2013, Pietro De Filippis / SPAL Automotive S.r.l. IT
An electric drive comprising:…

Electric Motor Operation Apparatus and Method
US 08810180 B2, Aug. 19, 2014, Franz-Josef Schmidt / Zentrum Mikroelektronik Dresden AG (Dresden, DE)
A method for operating an electric motor, which has a primary part…

Filter Apparatus and Method for Brushless DC Motors
US 08796973 B2, Aug. 5, 2014, John Andrew Bleecker, III et al. / Hella Corporate Center USA, Inc. (Plymouth, US)
In a multi-phase brushless DC motor, a zero crossing N-bit filter comprising:…

Method and Apparatus for Driving a Polyphase Electronically Commutated Electric Machine and a Motor System
US 08872457 B2, Oct. 28, 2014, Gerhard Knecht / Robert Bosch GmbH (Stuttgart, DE)
A method for operating an electronically commutated electric machine, the method…

Method and Device for Controlling an Electric Motor
US 08729845 B2, May 20, 2014, Nico Spieckermann et al. / Siemens Aktiengesellschaft (München, DE)
A method for controlling a sensorless electric motor, comprising:…

Method and Device for Operating an Electric Drive With the Aid of a Phase Angle Control
US 08487570 B2, July 16, 2013, Klaus Dengler et al. / Robert Bosch GmbH (Stuttgart, DE)
Method for operating an electric motor having a phase angle control…

Motor Driving Apparatus and Method for Control of Motor Revolution
US 08569983 B2, Oct. 29, 2013, Yasuhiko Kokami et al. / Renesas Electronics Corporation (Kanagawa, JP)
A motor driving apparatus comprising:…

Sample and Hold Time Stamp for Sensing Zero Crossing of Back Electromotive Force in 3-Phase Brushless DC Motors
US 08847531 B2, Sept. 30, 2014, Rex L. Allison, III / IXYS CH GmbH CH
A device comprising: (a)…

Sensor-Less Driving Method of Permanent Magnet AC Motor
US 08847530 B2, Sept. 30, 2014, Lei Bi / Fortior Technology (Shenzhen) Co., Ltd. (Shenzhen, CN
A permanent-magnet AC motor, comprising:…

Sensorless BLDC Motor Control by Comparing Instantaneous and Average BEMF Voltages
US 08558495 B2, Oct. 15, 2013, Bokyoung Hong et al. / Atmel Corporation (San Jose, US)
A method of detecting back electromotive force (BEMF) for controlling a brushless…

Single-Phase Brushless Motor Drive Circuit
US 08786231 B2, July 22, 2014, Tsutomu Murata / Semiconductor Components Industries, LLC (Phoenix, US)
A driving circuit for a single-phase brushless motor, comprising:…

Zero-Crossing Detection Circuit and Commutation Device Using the Zero-Crossing Detection Circuit
US 08487571 B2, July 16, 2013, Jen-Hung Chi et al. / Richtek Technology Corp. (Zhubei, TW)
A zero-crossing detection circuit adapted into a three-phase brushless DC (direct…

Patentorg has 17 documents under With Zero-Crossing Detection Patents.

Other subcategories for category Electricity: motive power systems
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