Switching characterization of cascaded multilevel-inverter-controlled systems
In this paper, the method of triangular carrier switching control of two-level inverters is extended to cascaded multilevel inverters using phase-shifted multicarrier unipolar pulsewidth modulation (PWM). The condition for smooth modulation is obtained using the Bessel’s function representation ofth...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Institute of Electrical and Electronic Engineers
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/13252 |
| _version_ | 1848748298177871872 |
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| author | Gupta, R. Ghosh, Arindam joshi, A. |
| author_facet | Gupta, R. Ghosh, Arindam joshi, A. |
| author_sort | Gupta, R. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this paper, the method of triangular carrier switching control of two-level inverters is extended to cascaded multilevel inverters using phase-shifted multicarrier unipolar pulsewidth modulation (PWM). The condition for smooth modulation is obtained using the Bessel’s function representation ofthe PWM output and the switching condition of the multilevelinverter-controlled system. A method is proposed for the determination of the minimum amplitude of the triangular carrier for smooth modulation at fixed switching frequency. It is shown that the multilevel modulation based on the phase-shifted carriers significantly reduces the ripple magnitude in the switching function and allows the use of a smaller carrier amplitude under closed loop. This increases the forward gain and, hence, improvesthe tracking characteristics. The proposed cascaded multilevel inverter control is implemented for the operation of a distribution static compensator (DSTATCOM) in the voltage control mode. The xperimental verification of the theoretical and simulation results is provided through a field-programmable gate array (FPGA) based control of a laboratory model of a single-phase DSTATCOM. |
| first_indexed | 2025-11-14T07:02:49Z |
| format | Journal Article |
| id | curtin-20.500.11937-13252 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:02:49Z |
| publishDate | 2008 |
| publisher | Institute of Electrical and Electronic Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-132522017-02-28T01:33:50Z Switching characterization of cascaded multilevel-inverter-controlled systems Gupta, R. Ghosh, Arindam joshi, A. In this paper, the method of triangular carrier switching control of two-level inverters is extended to cascaded multilevel inverters using phase-shifted multicarrier unipolar pulsewidth modulation (PWM). The condition for smooth modulation is obtained using the Bessel’s function representation ofthe PWM output and the switching condition of the multilevelinverter-controlled system. A method is proposed for the determination of the minimum amplitude of the triangular carrier for smooth modulation at fixed switching frequency. It is shown that the multilevel modulation based on the phase-shifted carriers significantly reduces the ripple magnitude in the switching function and allows the use of a smaller carrier amplitude under closed loop. This increases the forward gain and, hence, improvesthe tracking characteristics. The proposed cascaded multilevel inverter control is implemented for the operation of a distribution static compensator (DSTATCOM) in the voltage control mode. The xperimental verification of the theoretical and simulation results is provided through a field-programmable gate array (FPGA) based control of a laboratory model of a single-phase DSTATCOM. 2008 Journal Article http://hdl.handle.net/20.500.11937/13252 Institute of Electrical and Electronic Engineers restricted |
| spellingShingle | Gupta, R. Ghosh, Arindam joshi, A. Switching characterization of cascaded multilevel-inverter-controlled systems |
| title | Switching characterization of cascaded multilevel-inverter-controlled systems |
| title_full | Switching characterization of cascaded multilevel-inverter-controlled systems |
| title_fullStr | Switching characterization of cascaded multilevel-inverter-controlled systems |
| title_full_unstemmed | Switching characterization of cascaded multilevel-inverter-controlled systems |
| title_short | Switching characterization of cascaded multilevel-inverter-controlled systems |
| title_sort | switching characterization of cascaded multilevel-inverter-controlled systems |
| url | http://hdl.handle.net/20.500.11937/13252 |