EP 0789948 A1 19970820 - DUAL MODE CONTROLLER FOR A BRUSHLESS DC MOTOR
Title (en)
DUAL MODE CONTROLLER FOR A BRUSHLESS DC MOTOR
Title (de)
ZWEIMODENSTEUERUNG FÜR EINEN BÜRSTENLOSEN GLEICHSTROMMOTOR
Title (fr)
UNITE DE COMMANDE BIMODE D'UN MOTEUR A COURANT CONTINU SANS BALAIS
Publication
Application
Priority
- US 9513165 W 19950929
- US 31599094 A 19940930
Abstract (en)
[origin: WO9610863A1] A dual mode controller for a brushless DC motor provides driving signals to an electronic commutator in two distinctly different modes defined by a predetermined transition speed. An encoder supplies motor position signals to the controller for use in generating the driving signals. At speeds below the transition speed the driving signals are generated in phase with the position signals. At speeds above the transition speed the phase of the driving signals is substantially advanced. This reduces the back EMF in the stator windings and substantially increases the maximum no-load speed of the motor.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H02P 6/08 (2013.01 - EP); H02P 6/10 (2013.01 - US); H02P 6/15 (2016.02 - EP); H02P 6/181 (2013.01 - EP)
Citation (search report)
See references of WO 9610863A1
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
WO 9610863 A1 19960411; EP 0789948 A1 19970820; JP H10507058 A 19980707
DOCDB simple family (application)
US 9513165 W 19950929; EP 95936875 A 19950929; JP 51217996 A 19950929