H - Electricity – 02 – K
Patent
H - Electricity
02
K
H02K 29/06 (2006.01) H02K 29/08 (2006.01) H02K 29/10 (2006.01) H02P 6/00 (2006.01) H02P 6/08 (2006.01)
Patent
CA 2468429
An electronically commutated DC motor comprises a stator comprising at least one stator winding (22, 24, 26), a rotor (28) electromagnetically interacting with the stator, a positive and a negative DC voltage line (76, 78) for supplying power to the motor (20), in particular from a battery (77), a full bridge circuit (74) for controlling the current in the at least one stator winding (22, 24, 26), which full bridge circuit (74) comprises a plurality of bridge arms that each comprise an upper bridge transistor (66, 80, 86) for controlling the current from the positive DC voltage line (76) to an associated terminal (68; 82; 88) of that stator winding (22, 24, 26) as well as a lower bridge transistor (70, 84, 90) for controlling the current from the relevant terminal of the stator winding to the negative DC voltage line (78). The motor further comprises an arrangement for generating a plurality of rotor position signals, and an arrangement for controlling a predetermined bridge transistor by logical combination of rotor position signals associated therewith, there being provided, for logical combination of those rotor position signals, a control transistor (60) to whose base a first rotor position signal (H1) is conveyable and to whose emitter a second rotor position signal (H2) is conveyable, and whose collector signal serves to control the predetermined bridge transistor (66). A circuit comprising a half bridge is also described.
L'invention concerne un moteur à courant continu à commutation électronique. Ce moteur a un stator pourvu d'au moins un enroulement statorique (22, 24, 26), un rotor (28) en interaction électromagnétique avec le stator, un câble de tension continue positive (76) et un câble de tension continue négative (78) destinés à l'alimentation en courant du moteur (20), notamment à partir d'une batterie (77) et un circuit en pont intégral (74) destiné à commander le courant du ou des enroulement(s) statorique(s) (22, 24, 26), ce circuit en pont intégral (74) présentant plusieurs branches de pont qui présentent respectivement un transistor supérieur de pont (66, 80, 86) destiné à commander le courant allant du câble de tension continue positive (76) à un raccord associé (68; 82; 88) de cet enroulement statorique (22, 24, 26) et un transistor inférieur de pont (70, 84, 90) destiné à commander le courant allant du raccord concerné de l'enroulement statorique au câble de tension continue négative (78). En outre, le moteur a un dispositif de production de plusieurs signaux de position de rotor et un dispositif destiné à commander un transistor de pont prédéterminé par la liaison de ces signaux rotor associés. Pour lier ces signaux de position de rotor, on utilise un transistor de commande (60) dont la base peut recevoir un premier signal de position de rotor (H1), dont l'émetteur peut recevoir un deuxième signal de position de rotor (H2) et dont le signal collecteur permet de commander le transistor en pont (66) prédéterminé. L'invention concerne également un circuit comportant un demi-pont.
Heydrich Walter
Rappenecker Hermann
Weisser Wilhelm
Ebm-Papst St. Georgen Gmbh & Co. Kg
Gowling Lafleur Henderson Llp
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