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1. WO2020222953 - MOTOR CONTROLLER WITH ACCURATE CURRENT MEASUREMENT

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Publication Number WO/2020/222953
Publication Date 05.11.2020
International Application No. PCT/US2020/025657
International Filing Date 30.03.2020
IPC
H02P 6/28 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
6Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
28Arrangements for controlling current
G01R 19/00 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19Arrangements for measuring currents or voltages or for indicating presence or sign thereof
H02P 21/22 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
21Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
22Current control, e.g. using a current control loop
H02P 27/08 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
27Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
04using variable-frequency supply voltage, e.g. inverter or converter supply voltage
06using dc to ac converters or inverters
08with pulse width modulation
CPC
G01R 19/0092
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19Arrangements for measuring currents or voltages or for indicating presence or sign thereof
0092measuring current only
H02M 2001/0009
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
0003Details of control, feedback and regulation circuits
0009Devices and circuits for detecting current in a converter
H02P 21/22
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
21Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
22Current control, e.g. using a current control loop
H02P 27/08
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
27Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
04using variable-frequency supply voltage, e.g. inverter or converter supply voltage
06using dc to ac converters or inverters
08with pulse width modulation
H02P 6/10
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
6Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
10Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
H02P 6/14
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
6Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
14Electronic commutators
Applicants
  • ALLEGRO MICROSYSTEMS, LLC [US]/[US]
Inventors
  • LU, Yisong
Agents
  • CROWLEY, Judith, C.
  • MOOSEY, Anthony, T.
  • DURKEE, Paul, D.
  • ROBINSON, Kermit
  • MOFFORD, Donald, F.
  • DALY, Christopher, S.
  • DOWNING, Marianne, M.
  • BLAU, David, E.
  • DUBUC, Marisa, J.
  • DIMOV, Kiril, O.
  • KIM, Do Te
  • LANGE, Kristoffer, W.
  • THOMAS, William R.
Priority Data
16/396,87729.04.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MOTOR CONTROLLER WITH ACCURATE CURRENT MEASUREMENT
(FR) DISPOSITIF DE COMMANDE DE MOTEUR AVEC MESURE DE COURANT PRÉCISE
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Abstract
(EN)
A motor control system for reducing or eliminating current ripple error during current sampling comprises a motor having a plurality of phase coils, a motor driver circuit having a plurality of switches coupled to the plurality of phase coils to drive current through the phase coils, and a motor controller circuit configured to provide a plurality of output control signals coupled to the plurality of switches. A phase circuit modifies a first output control signal to produce a modified control signal that is out of phase with a second output control signal. A current measuring circuit is included to measure a current through the motor by measuring the current during a first time period when the first output control signal is active and measuring the current during a second time period when the modified control signal is active.
(FR)
La présente invention concerne un système de commande de moteur pour réduire ou éliminer une erreur d'ondulation de courant pendant un échantillonnage de courant comprenant un moteur ayant une pluralité de bobines de phase, un circuit d'entraînement de moteur ayant une pluralité de commutateurs couplés à la pluralité de bobines de phase pour entraîner le courant à travers les bobines de phase, et un circuit de commande de moteur configuré pour fournir une pluralité de signaux de commande de sortie couplés à la pluralité de commutateurs. Un circuit de phase modifie un premier signal de commande de sortie pour produire un signal de commande modifié qui est déphasé par rapport à un second signal de commande de sortie. Un circuit de mesure de courant est inclus pour mesurer un courant à travers le moteur en mesurant le courant pendant une première période de temps lorsque le premier signal de commande de sortie est actif et en mesurant le courant pendant une seconde période de temps lorsque le signal de commande modifié est actif.
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