A new pulse-width modulation (PWM) scheme for modular structured multilevel voltage source inverter
This work proposes a new switching scheme for a particular multilevel topology, known as the modular structured multilevel inverter (MSMI). The proposed scheme is based on symmetric regular sampled unipolar PWM, with multiple modulating waveforms and a single carrier. Mathematical equations that def...
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| Main Authors: | , |
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| Format: | Article |
| Language: | en |
| Published: |
Taylor & Francis
2004
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| Subjects: | |
| Online Access: | http://eprints.utm.my/9844/1/JaAziz2004_anewpulsewidthmodulationscheme.pdf http://eprints.utm.my/9844/ http://dx.doi.org/10.1080/00207210410001675644 |
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| Summary: | This work proposes a new switching scheme for a particular multilevel topology, known as the modular structured multilevel inverter (MSMI). The proposed scheme is based on symmetric regular sampled unipolar PWM, with multiple modulating waveforms and a single carrier. Mathematical equations that define the PWM switching instants are derived. These equations are suitable for digital implementation. An experimental five-level MSMI test-rig is built to implement the proposed algorithm. The derived equations are implemented by a low-cost fixed-point microcontroller. Several tests to quantify the performance of the inverter under the proposed modulation scheme are carried out. |
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