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Title:
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Enhanced phase-shifted PWM carrier disposition for interleaved voltage-source inverters
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Author:
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Capellá Frau, Gabriel José; Pou Félix, Josep; Ceballos Recio, Salvador; Konstantinou, Georgios; Zaragoza Bertomeu, Jordi; Agelidis, Vassilios
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. TIEG - Terrassa Industrial Electronics Group |
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Abstract:
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This letter presents a novel implementation of pulse width modulation that improves the quality of the line-to-line output voltages in interleaved multiphase voltage-source inverters (VSIs). In multiphase VSIs with n interleaved parallel-connected legs, the best single-phase output voltage is achieved when the carriers are evenly phase shifted. However, switching among nonadjacent levels can be observed at regular intervals in the line-to-line voltages, causing bad harmonic performance. With the proposed method, switching in the line-to-line voltages happens exclusively between adjacent levels. The modulator utilizes two sets of n evenly phase-shifted carriers that are dynamically allocated. Because of its generality, the proposed implementation is valid for any number of phases and any number of legs in parallel. A MATLAB/Simulink model has been set up for simulation purposes. Selected experimental results obtained from a three-phase VSI made up with two and three legs in parallel per phase are reported, confirming the enhancement attained with the proposed implementation. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència
-Power electronics
-Electric inductors
-Modulation (Electronics)
-Interleaving
-legs connected in parallel
-pulse width modulation
-voltage-source inverter (VSI)
-Electrònica de potència
-Inductors elèctrics
-Modulació (Electrònica) |
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Rights:
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Document type:
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Article - Published version
Article |
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