08076898 is referenced by 2 patents and cites 17 patents.

The invention relates to electric engineering, in particular to methods for controlling an ac electronic motor. The inventive control method consists in starting and rotating a rotor upon EMF signals in current-free sections of an armature winding, in converting the EMF signals into discrete logical level signals by a normalizer, in detecting switching points by means of a microcontroller and in displacing said points according to a load current quantity, the rotor speed of rotation and the inductance of the armature winding sections, wherein the switching points are calculated and displaced with respect to bridging times of the free sections EMF whose voltage levels are different from zero. The inventive device is characterized in that it comprises a reference level displacing unit (26), which is arranged in the normalizer between a divider 22 and a comparator unit (23) and which consists of a current sensor (27), a voltage sensor (27), two adders (29, 30) and an inverter (31).

Title
Method of brushless DC motor control and its application
Application Number
12/278940
Publication Number
8076898 (B2)
Application Date
February 8, 2006
Publication Date
December 13, 2011
Inventor
Dmitriiy Aleksandrovich Shkad
Moscow
RU
Ol ga Nikolaevna Gmyzina
Moscow
RU
Vladimir Iosifovich Sagalovskiiy
Moscow
RU
Juliiy Abelevich Aranson
Moscow
RU
Andreiy Vladimirovich Sagalovskiiy
Moscow
RU
Agent
Patterson & Sheridan L
Assignee
Oilfield Equipment Development Center
SC
IPC
G05B 11/28
H02P 27/00
H02P 7/00
H02P 6/18
H02P 6/00
H02P 27/04
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