http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110380613-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02M1-0058 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02B70-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02M3-1582 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02M3-158 |
| filingDate | 2019-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110380613-B |
| titleOfInvention | PWM (pulse-width modulation) plus phase shift control method for realizing ZVS (zero voltage switching) of four-tube converter |
| abstract | The invention discloses a PWM (pulse-width modulation) plus phase shift control method for realizing ZVS (zero voltage switching) of a four-tube converter. Four-tube Buck-Boost converterThree degrees of freedom: Q 1 duty ratio of D y1 、 Q 4 Duty ratio of D y2 And phase shift duty ratio corresponding to phase shift angle D θ And under three working modes of PWM plus phase shift control, the three degrees of freedom mainly meet the following requirements: D θ = D y1 、 D θ =1− D y2 and D θ and = 0. The control method comprises the following steps: current of the inductor i L f Sending the signal into an over-negative detection circuit to obtain an over-negative signal of the inductive current v comp And excessive negative time t zero (ii) a Setting a reference value of the over-load time t zero_ref Passing the inductive current through a negative signal v comp Sending the signal into a phase shift control signal generating circuit to obtain a phase shift control signal Q olp (ii) a When in use t zero Is less than t zero_ref Time, phase shift control signal Q olp Duty ratio of D olp = D y2 (ii) a When the over-negative time is greater than t zero_ref Time and V in < V o when the temperature of the water is higher than the set temperature, D olp = D y1 + D y2 -1; when the over-negative time is greater than t zero_ref Time and V in > V o when the temperature of the water is higher than the set temperature, D olp and = 0. The method ensures the minimum effective value of the inductive current on the premise of realizing ZVS of all switching tubes in the full load range. |
| priorityDate | 2019-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.