Patent
Brushless DC motor driving circuit
Reads0
Chats0
TLDR
In this article, a brushless DC motor with a plurality of stator windings and a rotor made of a magnet is driven by energizing the stators successively, and signals induced in the plurality of windings resulting from the rotation of the rotor are detected as position signals of a rotor and at least one of stators which corresponds to the position signal is supplied with a driving signal.Abstract:
A brushless DC motor having a plurality of stator windings and a rotor made of a magnet is driven by energizing the stator windings successively, and in which signals induced in the plurality of stator windings resulting from the rotation of the rotor are detected as position signals of the rotor and at least one of the stator windings which corresponds to the position signal is supplied with a driving signal.read more
Citations
More filters
Patent
Electronically commutated motor systems and control therefor
TL;DR: In this paper, a regulating circuit is provided for maintaining the evaporator at a reference temperature by controlling the output signal of an alternator which supplies energization power to winding stages of a brushless DC motor.
Patent
Laundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor, method of operating an electronically commutated motor, and circuit
TL;DR: In this paper, a method of operating a laundry machine with a pair of rotatable components and an electronically commutated motor is described, in which a first control function is imposed on the operation of the machine to control the application of the DC voltage in accordance with a selected one of a plurality of first waveshapes so as to provide a resultant effective voltage to the motor.
Patent
Method and apparatus for electronically commutating a direct current motor without position sensors
TL;DR: In this paper, the authors present a method for electronically commutating a direct current motor without requiring position sensors but rather sampling induced voltage across an unenergized motor winding to derive control signals therefrom.
Patent
Method and apparatus for driving a brushless motor
TL;DR: In this article, an n-phase, m-pole brushless motor is driven without use of physical rotary position detectors, such as Hall elements or the like, and phase energizing signals (such as in response to zero crossings of the detected harmonic component) are generated to energize selected phases of the motor.
Patent
Control circuits, electronically commutated motor systems and methods
TL;DR: In this article, a control circuit for an electronically commutated motor which has a rotatable assembly and further has a stationary assembly with a plurality of winding stages having terminals for energization, and switches for applying a voltage to one or more of the terminals at a time and commutating the winding stages in a preselected sequence to rotate the rotatable assemblies is presented.
References
More filters
Patent
Counter emf commutated self-starting brushless d.c. motor
TL;DR: In this paper, the stator windings of a brushless DC motor are energized through individual silicon controlled rectifiers arranged in a ring counter circuit which is triggered from a pulse source.
Patent
Brushless d.c. motor
TL;DR: In this article, the stator of a permanent magnet rotor motor is energized from a D.C. supply through transistors Tr2, Tr4, Tr6 which are connected in a ring oscillator circuit 10, supplied through voltage and current control circuits 12, 11 and are rendered conducting by the voltage induced in successive windings.
Patent
Direct-current motor with permanent-magnet rotor and sequentially energized stator windings
TL;DR: In this article, an electric motor with star-connected stator windings and a permanent magnet rotor is described, and a voltage responsive circuit is proposed to respond to voltages induced in each of the windings between active intervals by the rotor.