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Active control based on an estimator for the bus-pumping cancellation in the half-bridge class-d audio power amplifiers
| dc.contributor.author | Sala Caselles, Vicenç |
| dc.contributor.author | Romeral Martínez, José Luis |
| dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica |
| dc.date.accessioned | 2011-10-31T08:57:57Z |
| dc.date.available | 2011-10-31T08:57:57Z |
| dc.date.created | 2011 |
| dc.date.issued | 2011 |
| dc.identifier.citation | Sala, V.; Romeral, L. Active control based on an estimator for the bus-pumping cancellation in the half-bridge class-d audio power amplifiers. A: Audio Engineering Society Convention. "127th Convention". New York: 2011, p. 1-4. |
| dc.identifier.isbn | 978-0-937803-71-4 |
| dc.identifier.uri | http://hdl.handle.net/2117/13705 |
| dc.description.abstract | In this paper is presented a new technique to avoid the distortion generated due to mid point voltage variations on DC-Bus of Class-D Half Bridge audio amplifiers. An usual distortion source on Class-D amplifier is the Bus-Pumping effect. Bus-Pumping causes characteristic distortion and introduces attenuation on output gain. Due to this effect the amplifier efficiency decreases. By including distortion factors on the Half-Bridge amplifier model a new Hybrid Active Control (HAC) is implemented. The HAC minimizes distortion due to mid point DC-Bus voltage variations. Simulation and experimental results confirm the theoretical approach of parameter influence on Bus-Pumping, and the effectiveness of HAC implemented control. Results show a clear reduction of generated distortion, which allows incremented audio amplifier efficiency. |
| dc.format.extent | 4 p. |
| dc.language.iso | eng |
| dc.subject | Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència::Convertidors de corrent elèctric |
| dc.subject.lcsh | Audio power amplifiers |
| dc.title | Active control based on an estimator for the bus-pumping cancellation in the half-bridge class-d audio power amplifiers |
| dc.type | Conference report |
| dc.subject.lemac | Amplificadors de potència |
| dc.contributor.group | Universitat Politècnica de Catalunya. MCIA - Motion Control and Industrial Applications Research Group |
| dc.description.peerreviewed | Peer Reviewed |
| dc.rights.access | Restricted access - publisher's policy |
| local.identifier.drac | 5893720 |
| dc.description.version | Postprint (published version) |
| local.citation.author | Sala, V.; Romeral, L. |
| local.citation.contributor | Audio Engineering Society Convention |
| local.citation.pubplace | New York |
| local.citation.publicationName | 127th Convention |
| local.citation.startingPage | 1 |
| local.citation.endingPage | 4 |