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1. (WO2017098205) DETERMINING THE PARKED POSITION OF A PERMANENT-MAGNET MOTOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/098205 International Application No.: PCT/GB2016/053706
Publication Date: 15.06.2017 International Filing Date: 25.11.2016
IPC:
H02P 6/20 (2016.01) ,H02P 6/18 (2016.01) ,H02P 6/22 (2006.01)
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
6
Arrangements for controlling synchronous motors or other dynamo-electric motors with electronic commutators in dependence on the rotor position; Electronic commutators therefor
20
Arrangements for starting
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
6
Arrangements for controlling synchronous motors or other dynamo-electric motors with electronic commutators in dependence on the rotor position; Electronic commutators therefor
14
Electronic commutators
16
Circuit arrangements for detecting position
18
without separate position detecting element, e.g. using back-emf in windings
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
6
Arrangements for controlling synchronous motors or other dynamo-electric motors with electronic commutators in dependence on the rotor position; Electronic commutators therefor
22
Arrangements for starting in a selected direction of rotation
Applicants:
DYSON TECHNOLOGY LIMITED [GB/GB]; Tetbury Hill Malmesbury Wiltshire SN16 0RP, GB
Inventors:
BATEMAN, Christopher; GB
ZHENG, Libo; GB
Agent:
DYSON TECHNOLOGY LIMITED; GB
BOOTH, Andrew; GB
LOBBAN, Colin; GB
FORRESTER, Simon; GB
MACPHERSON, Craig; GB
MACPHERSON, Carolyn; GB
FOWLER, Maria; GB
LERWILL, Jonathan; GB
HOBDAY, Duncan; GB
SMITH, Gillian; GB
MACKISACK, Anna; GB
WARNER, Thomas; GB
Priority Data:
1521781.310.12.2015GB
Title (EN) DETERMINING THE PARKED POSITION OF A PERMANENT-MAGNET MOTOR
(FR) DÉTERMINATION DE LA POSITION DE REPOS D'UN MOTEUR À AIMANT PERMANENT
Abstract:
(EN) A method of determining the parked position of a rotor of a permanent-magnet motor. The method comprises applying a first voltage to a phase winding of the motor, measuring a first parameter, removing the first voltage from the phase winding, waiting for current in the phase winding to decrease to zero, applying a second voltage having the opposite polarity to the phase winding, measuring a second parameter, comparing the first parameter and the second parameter, and determining that the rotor is in a first parked position if the first parameter is less than the second parameter, and that the rotor is in a second parked position if the first parameter is greater than the second parameter. The first parameter and the second parameter each correspond to one of (i) the time taken for current in the phase winding to exceed a threshold, and (ii) the magnitude of current in the phase winding at the end of a time interval.
(FR) L'invention concerne un procédé de détermination de la position de repos d'un rotor d'un moteur à aimant permanent. Le procédé consiste à appliquer une première tension à un enroulement de phase du moteur, à mesurer un premier paramètre, à éliminer la première tension de l'enroulement de phase, à attendre le courant dans l'enroulement de phase pour une diminution jusqu'à zéro, à appliquer une seconde tension de polarité opposée à l'enroulement de phase, à mesurer un second paramètre, à comparer le premier paramètre et le second paramètre ; et à déterminer que le rotor se trouve dans une première position de repos si le premier paramètre est inférieur au second paramètre, et que le rotor est dans une seconde position de repos si le premier paramètre est supérieur au second paramètre. Le premier paramètre et le second paramètre correspondent chacun (i) au temps pris par le courant dans l'enroulement de phase pour dépasser un seuil, ou (ii) à l'intensité du courant dans l'enroulement de phase à la fin d'un intervalle de temps.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, 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, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
US20170170758JP2017123773CN106887980AU2016366628KR1020180073701EP3387746