http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110311611-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02P21-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02P21-22 |
| filingDate | 2019-06-27^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-12-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-12-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110311611-B |
| titleOfInvention | Flux weakening control method and system for permanent magnet synchronous motor |
| abstract | The invention discloses a method and a system for controlling the flux weakening of a permanent magnet synchronous motor, which comprises the following steps of firstly, obtaining a motor base speed full current domain relation data set through a motor base speed calibration experiment; processing offline data to obtain a corresponding relation data set of each rotating speed point above a base speed, fitting an MTPV curve equation considering a nonlinear effect, and searching the relation data set according to the current rotating speed and a target torque to obtain an initial target current when the motor operates above the base speed; and constructing a weak magnetic ring by using the maximum output voltage and voltage feedback of the inverter, superposing the output to the initial quadrature axis current, and calculating the direct axis current which meets the requirements of the current circle of the driving current track in the current practical execution and the MTPV curve operation considering the nonlinear effect in real time. The invention considers the nonlinear effect of the motor in actual working, has good flux weakening effect and is easy to realize. |
| priorityDate | 2019-06-27^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID86531 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419550100 |
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