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1. (WO2007005318) TORQUE CONTROLLER IN AN ELECTRIC MOTOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/005318 International Application No.: PCT/US2006/024315
Publication Date: 11.01.2007 International Filing Date: 24.06.2006
Chapter 2 Demand Filed: 27.04.2007
IPC:
G05B 11/30 (2006.01) ,H02P 7/00 (2006.01)
G PHYSICS
05
CONTROLLING; REGULATING
B
CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
11
Automatic controllers
01
electric
26
in which the output signal is a pulse-train
30
using pulse-frequency modulation
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
P
CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS OR REACTORS OR CHOKE COILS
7
Arrangements for regulating or controlling the speed or torque of electric dc-motors
Applicants:
DRS TEST & ENERGY MANAGEMENT, INC. [US/US]; 110 Wynn Drive Huntsville, AL 35807, US (AllExceptUS)
Inventors:
MURPHREE, Jerry Eony; US
Agent:
GACHE, Russell, Carter; SIROTE & PERMUTT, P.C. 2311 Highland Avenue South Birmingham, AL 35205, US
Priority Data:
11/443,82231.05.2006US
60/695,22629.06.2005US
Title (EN) TORQUE CONTROLLER IN AN ELECTRIC MOTOR
(FR) REGULATEUR DE COUPLE DANS UN MOTEUR ELECTRIQUE
Abstract:
(EN) The torque of a motor (16) operated by an inverter circuit is controlled to allow maximum torque in the motor when the motor is stalled or at low rotation speeds. Control is accomplished by providing a switching frequency to the motor at a first switching frequency (122), detecting a rotation speed of the motor (126), and switching the current to the motor to a second switching frequency when the rotation speed of the motor drops to a predetermined slow rotation speed (130, 132, 134). The second switching frequency is less than the first switching frequency.
(FR) L'invention concerne le couple d'un moteur (16) actionné par un circuit d'inventeur régulé de manière à permettre à un couple maximum dans le moteur lorsque le moteur est arrêté ou se trouve à des vitesses de rotation faibles. La régulation est accomplie par fourniture d'une fréquence de commutation au moteur au niveau d'une première fréquence de commutation (122), détectant une vitesse de rotation du moteur (126), et commutant le courant du moteur à une seconde fréquence de commutation lorsque la vitesse de rotation du moteur chute à une vitesse de rotation faible prédéfinie (130, 132, 134). La seconde fréquence de commutation est inférieure à la première.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)