Non isolated and non-invertingcockcroft-walton multiplier based hybrid 2Nx interleaved boost converterfor renewable energy applications
- Bhaskar, M.S., Sanjeevikumar, P., Blaabjerg, F., Fedák, V., Cernat, M., Kulkarni, R.M.
- Authors: Bhaskar, M.S. , Sanjeevikumar, P. , Blaabjerg, F. , Fedák, V. , Cernat, M. , Kulkarni, R.M.
- Date: 2016
- Subjects: Non isolated , Non-inverting , Interleaved boost converter
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213764 , uj:21193 , Citation: Bhaskar, M.S. 2016. Non isolated and non-invertingcockcroft-walton multiplier based hybrid 2Nx interleaved boost converterfor renewable energy applications.
- Description: Abstract: In this paper hybrid non isolated and noninvertingCockcroft- Walton multiplier based 2Nx InterleavedBoost converter (2Nx IBC) for renewable energy applications is presented. The presented hybrid boost converter topology is derived from non-invertingNx Multilevel Boost Converter (Nx MBC) and inverting Nx Multilevel Boost Converter (Nx MBC). In renewable energy applications, generated voltage needs to be stepped up with high conversion ratio using a DC-DC converter at voltage levels as per the application requirement. The advantages of the presentedtopology of interleaved converter are high voltage conversion ratio, reduce ripple, low voltage stress, non-inverting output voltage without utilizing the high duty cycle, coupled inductors and transformer. The main advantage of presented topology consists in increasing voltage gain by adding capacitor and diode into circuitry without disturbing the main circuit.Moreover, the presented topologyis compared with several recent non isolated high gainDC-DC converters. The proposed topology is simulated in MATLAB/SIMULATION andobtained results verify the validity of the design and operation of converter.
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- Authors: Bhaskar, M.S. , Sanjeevikumar, P. , Blaabjerg, F. , Fedák, V. , Cernat, M. , Kulkarni, R.M.
- Date: 2016
- Subjects: Non isolated , Non-inverting , Interleaved boost converter
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213764 , uj:21193 , Citation: Bhaskar, M.S. 2016. Non isolated and non-invertingcockcroft-walton multiplier based hybrid 2Nx interleaved boost converterfor renewable energy applications.
- Description: Abstract: In this paper hybrid non isolated and noninvertingCockcroft- Walton multiplier based 2Nx InterleavedBoost converter (2Nx IBC) for renewable energy applications is presented. The presented hybrid boost converter topology is derived from non-invertingNx Multilevel Boost Converter (Nx MBC) and inverting Nx Multilevel Boost Converter (Nx MBC). In renewable energy applications, generated voltage needs to be stepped up with high conversion ratio using a DC-DC converter at voltage levels as per the application requirement. The advantages of the presentedtopology of interleaved converter are high voltage conversion ratio, reduce ripple, low voltage stress, non-inverting output voltage without utilizing the high duty cycle, coupled inductors and transformer. The main advantage of presented topology consists in increasing voltage gain by adding capacitor and diode into circuitry without disturbing the main circuit.Moreover, the presented topologyis compared with several recent non isolated high gainDC-DC converters. The proposed topology is simulated in MATLAB/SIMULATION andobtained results verify the validity of the design and operation of converter.
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A novel five-level optimized carrier multilevel PWM quad-inverter six-phase ac drive
- Sanjeevikumar, P., Blaabjerg, F., Wheeler, Pat, Fedák, V., Duran, M.J., Siano, P.
- Authors: Sanjeevikumar, P. , Blaabjerg, F. , Wheeler, Pat , Fedák, V. , Duran, M.J. , Siano, P.
- Date: 2016
- Subjects: Dual three-phase inverter , Quad-inverter , Six-phase inverter
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213724 , uj:21188 , Citation: Sanjeevikumar, P. et al. 2016. A novel five-level optimized carrier multilevel PWM quad-inverter six-phase ac drive.
- Description: Abstract: A novel single carrier pulse-width modulation (PWM) for a new quad-inverter configuration for multilevel sixphase asymmetrical open-winding ac converter is proposed in this article. Modularity of the circuit consist of four standard twolevel voltage source inverters (VSIs) with slight modifications, i.e. one additional bi-direction switch (MOSFET/IGBT) in each phase and a link to neutral with two capacitors to generate increased output levels. Furthermore, original optimal single carrier zero-shifted five-level modulation (SCZSFM) algorithm is developed for each VSI to behave as equivalent to ones, a classical five-level multilevel inverter. Moreover, feasibility of the topology allows the VSIs to provide multilevel output voltage regardless of the open-winding electrical machine configuration. Also, the developed single carrier based PWM presents a straightforward solution compared to space vector modulation approaches for real time implementation. The total electric power shared among the four dc buses and quadruples the power capability of VSIs. Complete ac drive modules are developed numerically using simulation in MATLAB/PLECS software. Observed set of results are depicted in this paper under balanced conditions to show the effectiveness of the proposal in good agreement with theoretical background. This proposal suits the need of low-voltage/highcurrent applications to ac tractions, electrical vehicles and ‘More- Electric Aircraft’ propulsion systems.
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- Authors: Sanjeevikumar, P. , Blaabjerg, F. , Wheeler, Pat , Fedák, V. , Duran, M.J. , Siano, P.
- Date: 2016
- Subjects: Dual three-phase inverter , Quad-inverter , Six-phase inverter
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213724 , uj:21188 , Citation: Sanjeevikumar, P. et al. 2016. A novel five-level optimized carrier multilevel PWM quad-inverter six-phase ac drive.
- Description: Abstract: A novel single carrier pulse-width modulation (PWM) for a new quad-inverter configuration for multilevel sixphase asymmetrical open-winding ac converter is proposed in this article. Modularity of the circuit consist of four standard twolevel voltage source inverters (VSIs) with slight modifications, i.e. one additional bi-direction switch (MOSFET/IGBT) in each phase and a link to neutral with two capacitors to generate increased output levels. Furthermore, original optimal single carrier zero-shifted five-level modulation (SCZSFM) algorithm is developed for each VSI to behave as equivalent to ones, a classical five-level multilevel inverter. Moreover, feasibility of the topology allows the VSIs to provide multilevel output voltage regardless of the open-winding electrical machine configuration. Also, the developed single carrier based PWM presents a straightforward solution compared to space vector modulation approaches for real time implementation. The total electric power shared among the four dc buses and quadruples the power capability of VSIs. Complete ac drive modules are developed numerically using simulation in MATLAB/PLECS software. Observed set of results are depicted in this paper under balanced conditions to show the effectiveness of the proposal in good agreement with theoretical background. This proposal suits the need of low-voltage/highcurrent applications to ac tractions, electrical vehicles and ‘More- Electric Aircraft’ propulsion systems.
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Harmonic minimization in modulated frequency single-phase matrix converter
- Agarwal, A., Sanjeevikumar, P., Agarwal, V., Rajasekar, S., Fedák, V., Cernat, M.
- Authors: Agarwal, A. , Sanjeevikumar, P. , Agarwal, V. , Rajasekar, S. , Fedák, V. , Cernat, M.
- Date: 2016
- Subjects: Field-programmable gate array (FPGA) , Frequency converter , Total harmonic distortion (THD)
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213780 , uj:21195 , Citation: Agarwal, A. et al. 2016. Harmonic minimization in modulated frequency single-phase matrix converter.
- Description: Abstract: This Field Programmable Gate Array (FPGA) based digital controller has been developed to improve the output of the frequency converter using Hardware Description Language. An attempt has been made to analyze converters using three modulation techniques namely sinusoidal pulse width modulation (SPWM), delta modulation (DM) and trapezoidal modulation (TM) to reduce the harmonics. It has been found that for the Sine PWM, the total harmonic distortion factor (THD) is high when the output frequency is greater than input frequency. The output is improved with delta modulation scheme where the total harmonic distortion is found minimum as compare to the SPWM and TM techniques. The circuit has been tested qualitatively by observing various waveforms on digital storage oscilloscope (DSO). The overall system is compact and no external memory system is required. Tests have been carried out to show the effectiveness and flexibility of the proposed method.
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- Authors: Agarwal, A. , Sanjeevikumar, P. , Agarwal, V. , Rajasekar, S. , Fedák, V. , Cernat, M.
- Date: 2016
- Subjects: Field-programmable gate array (FPGA) , Frequency converter , Total harmonic distortion (THD)
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213780 , uj:21195 , Citation: Agarwal, A. et al. 2016. Harmonic minimization in modulated frequency single-phase matrix converter.
- Description: Abstract: This Field Programmable Gate Array (FPGA) based digital controller has been developed to improve the output of the frequency converter using Hardware Description Language. An attempt has been made to analyze converters using three modulation techniques namely sinusoidal pulse width modulation (SPWM), delta modulation (DM) and trapezoidal modulation (TM) to reduce the harmonics. It has been found that for the Sine PWM, the total harmonic distortion factor (THD) is high when the output frequency is greater than input frequency. The output is improved with delta modulation scheme where the total harmonic distortion is found minimum as compare to the SPWM and TM techniques. The circuit has been tested qualitatively by observing various waveforms on digital storage oscilloscope (DSO). The overall system is compact and no external memory system is required. Tests have been carried out to show the effectiveness and flexibility of the proposed method.
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