A comprehensive analysis and hardware implementation of control strategies for high output voltage DC-DC boost power converter
- Padmanaban, Sanjeevikumar, Grandi, Gabriele, Blaabjerg, Frede, Wheeler, Pat, Siano, Pierluigi, Hammami, Manel
- Authors: Padmanaban, Sanjeevikumar , Grandi, Gabriele , Blaabjerg, Frede , Wheeler, Pat , Siano, Pierluigi , Hammami, Manel
- Date: 2016
- Subjects: DC-DC boost converter , Proportional-integral (P-I) controller , Fuzzy controller
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/215079 , uj:21361 , Citation: Padmanaban, S. et al. 2016. A comprehensive analysis and hardware implementation of control strategies for high output voltage DC-DC boost power converter.
- Description: Abstract: Classical DC-DC converters used in high voltage direct current (HVDC) power transmission systems, lack in terms of efficiency, reduced transfer gain and increased cost with sensor (voltage/current) numbers. Besides, the internal self-parasitic behavior of the power components reduces the output voltage and efficiency of classical HV converters. This paper deals with extra high-voltage (EHV) dc-dc boost converter by the application of voltage-lift technique to overcome the aforementioned deficiencies. The control strategy is based on classical proportional-integral (P-I) and fuzzy logic closed-loop controller to get high and stable output voltage. Complete hardware prototype of EHV is implemented and experimental tasks are carried out with digital signal processor (DSP) TMS320F2812. The control algorithms P-I, fuzzy logic and the pulse-width modulation (PWM) signals for N-channel MOSFET device are performed by the DSP. The experimental results provided show good conformity with developed hypothetical predictions. Additionally, the presented study confirms that the fuzzy logic controller provides better performance than classical P-I controller under different perturbation conditions.
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- Authors: Padmanaban, Sanjeevikumar , Grandi, Gabriele , Blaabjerg, Frede , Wheeler, Pat , Siano, Pierluigi , Hammami, Manel
- Date: 2016
- Subjects: DC-DC boost converter , Proportional-integral (P-I) controller , Fuzzy controller
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/215079 , uj:21361 , Citation: Padmanaban, S. et al. 2016. A comprehensive analysis and hardware implementation of control strategies for high output voltage DC-DC boost power converter.
- Description: Abstract: Classical DC-DC converters used in high voltage direct current (HVDC) power transmission systems, lack in terms of efficiency, reduced transfer gain and increased cost with sensor (voltage/current) numbers. Besides, the internal self-parasitic behavior of the power components reduces the output voltage and efficiency of classical HV converters. This paper deals with extra high-voltage (EHV) dc-dc boost converter by the application of voltage-lift technique to overcome the aforementioned deficiencies. The control strategy is based on classical proportional-integral (P-I) and fuzzy logic closed-loop controller to get high and stable output voltage. Complete hardware prototype of EHV is implemented and experimental tasks are carried out with digital signal processor (DSP) TMS320F2812. The control algorithms P-I, fuzzy logic and the pulse-width modulation (PWM) signals for N-channel MOSFET device are performed by the DSP. The experimental results provided show good conformity with developed hypothetical predictions. Additionally, the presented study confirms that the fuzzy logic controller provides better performance than classical P-I controller under different perturbation conditions.
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A novel multilevel quad-inverter configuration for quasi six-phase open-winding converter
- Padmanaban, Sanjeevikumar, Blaabjerg, Frede, Wheeler, Patrick William, Siano, Pierluigi, Martirano, Luigi, Szcześniak, Pawel
- Authors: Padmanaban, Sanjeevikumar , Blaabjerg, Frede , Wheeler, Patrick William , Siano, Pierluigi , Martirano, Luigi , Szcześniak, Pawel
- Date: 2016
- Subjects: Dual three-phase inverter , Quad-inverter, six-phase inverter , Multilevel inverters
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213812 , uj:21199 , Citation: Padmanaban, S. 2016. A novel multilevel quad-inverter configuration for quasi six-phase open-winding converter.
- Description: Abstract: This paper developed a novel quad-inverter configuration for multilevel six-phase asymmetrical open-winding AC converter. Proposal found to be suited for (low-voltage/highcurrent) applications such as AC tractions and ‘More-Electric Aircraft’ propulsion systems. Modular power circuit comprises of standard four three-phase voltage source inverter (VSI) and each connected to the open-end windings. Each VSIs are incorporated with one bi-directional switching device (MOSFET/IGBT) per phase and two capacitors with neutral point connected. Further, an original modified single carrier five-level modulation (MSCFM) algorithm is developed in this work and easy for implementing in real digital processors. The proposed modulation algorithm is capable of generating, 5-level voltages at each output of four VSI as one equivalent to multilevel inverter. The total power is among the four DC sources and quadruples the capabilities of VSIs. A set of observed results is presented with numerical software analysis (Matlab/PLECS) in balanced working conditions. Always the results shown good agreement in the developed theoretical background.
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- Authors: Padmanaban, Sanjeevikumar , Blaabjerg, Frede , Wheeler, Patrick William , Siano, Pierluigi , Martirano, Luigi , Szcześniak, Pawel
- Date: 2016
- Subjects: Dual three-phase inverter , Quad-inverter, six-phase inverter , Multilevel inverters
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213812 , uj:21199 , Citation: Padmanaban, S. 2016. A novel multilevel quad-inverter configuration for quasi six-phase open-winding converter.
- Description: Abstract: This paper developed a novel quad-inverter configuration for multilevel six-phase asymmetrical open-winding AC converter. Proposal found to be suited for (low-voltage/highcurrent) applications such as AC tractions and ‘More-Electric Aircraft’ propulsion systems. Modular power circuit comprises of standard four three-phase voltage source inverter (VSI) and each connected to the open-end windings. Each VSIs are incorporated with one bi-directional switching device (MOSFET/IGBT) per phase and two capacitors with neutral point connected. Further, an original modified single carrier five-level modulation (MSCFM) algorithm is developed in this work and easy for implementing in real digital processors. The proposed modulation algorithm is capable of generating, 5-level voltages at each output of four VSI as one equivalent to multilevel inverter. The total power is among the four DC sources and quadruples the capabilities of VSIs. A set of observed results is presented with numerical software analysis (Matlab/PLECS) in balanced working conditions. Always the results shown good agreement in the developed theoretical background.
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Hybrid non-isolated and non inverting Nx interleaved DC-DC multilevel boost converter for renewable energy applications
- Bhaskar, Mahajan Sagar, Kulkarni, Rishi M., Padmanaban, Sanjeevikumar, Siano, Pierluigi, Blaabjerg, Frede
- Authors: Bhaskar, Mahajan Sagar , Kulkarni, Rishi M. , Padmanaban, Sanjeevikumar , Siano, Pierluigi , Blaabjerg, Frede
- Date: 2016
- Subjects: Non isolated , Interleaved , High Conversion
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213877 , uj:21207 , Citation: Bhaskar, M.S. et at. 2016. Hybrid non-isolated and non inverting Nx interleaved DC-DC multilevel boost converter for renewable energy applications.
- Description: Abstract: In this paper hybrid non isolated/ non inverting Nx interleaved DC-DC multilevel Boost Converter for renewable energy applications is presented. The presented hybrid topology is derived from the conventional interleaved converter and the Nx Multilevel boost converter. In renewable energy applications, generated energy cannot be directly used at application end. In most of the cases it needs to be stepped up with DC-DC converter at operating voltage levels as per the requirement of the application. Though conventional boost converter can theoretically be used for this purpose, but obtaining such high gain implies that boost converter should operate at it its maximum duty cycle, which is not feasible due to the great variations in the output voltage caused by small variations in the duty cycle, leading the boost converter to instability and also increases the voltage stress across switches. The advantages of presenting topology of DC-DC converter are high voltage conversion, reduce ripple, low voltage stress, non inverting without utilizing the high duty and transformer. The main advantage of presented topology is more number of levels can be increased by adding capacitor and diode circuitry to increase the voltage gain without disturbing the main circuit. Moreover, the presented topology is compared with several recent high gain converters. The proposed topology is simulated in MATLAB/SIMULATION and results will verify the validity of the design and operation of the converter.
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- Authors: Bhaskar, Mahajan Sagar , Kulkarni, Rishi M. , Padmanaban, Sanjeevikumar , Siano, Pierluigi , Blaabjerg, Frede
- Date: 2016
- Subjects: Non isolated , Interleaved , High Conversion
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213877 , uj:21207 , Citation: Bhaskar, M.S. et at. 2016. Hybrid non-isolated and non inverting Nx interleaved DC-DC multilevel boost converter for renewable energy applications.
- Description: Abstract: In this paper hybrid non isolated/ non inverting Nx interleaved DC-DC multilevel Boost Converter for renewable energy applications is presented. The presented hybrid topology is derived from the conventional interleaved converter and the Nx Multilevel boost converter. In renewable energy applications, generated energy cannot be directly used at application end. In most of the cases it needs to be stepped up with DC-DC converter at operating voltage levels as per the requirement of the application. Though conventional boost converter can theoretically be used for this purpose, but obtaining such high gain implies that boost converter should operate at it its maximum duty cycle, which is not feasible due to the great variations in the output voltage caused by small variations in the duty cycle, leading the boost converter to instability and also increases the voltage stress across switches. The advantages of presenting topology of DC-DC converter are high voltage conversion, reduce ripple, low voltage stress, non inverting without utilizing the high duty and transformer. The main advantage of presented topology is more number of levels can be increased by adding capacitor and diode circuitry to increase the voltage gain without disturbing the main circuit. Moreover, the presented topology is compared with several recent high gain converters. The proposed topology is simulated in MATLAB/SIMULATION and results will verify the validity of the design and operation of the converter.
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Investigation on the development of a sliding mode controller for constant power loads in microgrids
- Hossain, Eklas, Perez, Ron, Padmanaban, Sanjeevikumar, Siano, Pierluigi
- Authors: Hossain, Eklas , Perez, Ron , Padmanaban, Sanjeevikumar , Siano, Pierluigi
- Date: 2017
- Subjects: Sliding mode control , Constant power load , Negative incremental impedance
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/241125 , uj:24817 , Citation: Hossain, E. 2017. Investigation on the development of a sliding mode controller for constant power loads in microgrids. Energies, 10:1-24. DOI:10.3390/en10081086.
- Description: Abstract: To implement renewable energy resources, microgrid systems have been adopted and developed into the technology of choice to assure mass electrification in the next decade. Microgrid systems have a number of advantages over conventional utility grid systems, however, they face severe instability issues due to the continually increasing constant power loads. To improve the stability of the entire system, the load side compensation technique is chosen because of its robustness and cost effectiveness. In this particular occasion, a sliding mode controller is developed for a microgrid system in the presence of constant power loads to assure a certain control objective of keeping the output voltage constant at 480 V. After that, a robustness analysis of the sliding mode controller against parametric uncertainties was performed and the sliding mode controller’s robustness against parametric uncertainties, frequency variations, and additive white Gaussian noise (AWGN) are presented. Later, the performance of the proportional integral derivative (PID) and sliding mode controller are compared in the case of nonlinearity, parameter uncertainties, and noise rejection to justify the selection of the sliding mode controller over the PID controller. All the necessary calculations are reckoned mathematically and results are verified in a virtual platform such as MATLAB/Simulink with a positive outcome.
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Investigation on the development of a sliding mode controller for constant power loads in microgrids
- Authors: Hossain, Eklas , Perez, Ron , Padmanaban, Sanjeevikumar , Siano, Pierluigi
- Date: 2017
- Subjects: Sliding mode control , Constant power load , Negative incremental impedance
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/241125 , uj:24817 , Citation: Hossain, E. 2017. Investigation on the development of a sliding mode controller for constant power loads in microgrids. Energies, 10:1-24. DOI:10.3390/en10081086.
- Description: Abstract: To implement renewable energy resources, microgrid systems have been adopted and developed into the technology of choice to assure mass electrification in the next decade. Microgrid systems have a number of advantages over conventional utility grid systems, however, they face severe instability issues due to the continually increasing constant power loads. To improve the stability of the entire system, the load side compensation technique is chosen because of its robustness and cost effectiveness. In this particular occasion, a sliding mode controller is developed for a microgrid system in the presence of constant power loads to assure a certain control objective of keeping the output voltage constant at 480 V. After that, a robustness analysis of the sliding mode controller against parametric uncertainties was performed and the sliding mode controller’s robustness against parametric uncertainties, frequency variations, and additive white Gaussian noise (AWGN) are presented. Later, the performance of the proportional integral derivative (PID) and sliding mode controller are compared in the case of nonlinearity, parameter uncertainties, and noise rejection to justify the selection of the sliding mode controller over the PID controller. All the necessary calculations are reckoned mathematically and results are verified in a virtual platform such as MATLAB/Simulink with a positive outcome.
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PI and fuzzy control strategies for high voltage output DC-DC boost power converter – hardware implementation and analysis
- Padmanaban, Sanjeevikumar, Blaabjerg, Frede, Siano, Pierluigi, Martirano, Luigi, Leonowicz, Zbigniew
- Authors: Padmanaban, Sanjeevikumar , Blaabjerg, Frede , Siano, Pierluigi , Martirano, Luigi , Leonowicz, Zbigniew
- Date: 2016
- Subjects: Maroti, Kiran Pandav , DC-DC boost converter , Proportional-integral (PI) controller , Fuzzy controller
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213853 , uj:21204 , Citation: Padmanaban, S. et al. 2016. PI and fuzzy control strategies for high voltage output DC-DC boost power converter – hardware implementation and analysis.
- Description: Abstract: This paper presents the control strategies by Proportional- Integral (P-I) and Fuzzy Logic (FL) for a DC-DC boost power converter for high output voltage configuration. Standard DC-DC converters are traditionally used for high voltage direct current (HVDC) power transmission systems. But, lack its performances in terms of efficiency, reduced transfer gain and increased cost with sensor units. Moreover, the internal self-parasitic components reduce the output voltage and efficiency of classical high voltage converters (HVC). This investigation focused on extra highvoltage (EHV) DC-DC boost power converter with inbuilt voltage-lift technique and overcome the aforementioned deficiencies. Further, the control strategy is adapted based on proportional-integral (P-I) and fuzzy logic, closed-loop controller to regulate the outputs and ensure the performances. Complete hardware prototype of EHV converter is realized and experimental tasks are set out with digital signal processor (DSP) TMS320F2812 under different perturbation conditions. Observed set of results is provided and shown good conformity with developed hypothetical predictions.
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- Authors: Padmanaban, Sanjeevikumar , Blaabjerg, Frede , Siano, Pierluigi , Martirano, Luigi , Leonowicz, Zbigniew
- Date: 2016
- Subjects: Maroti, Kiran Pandav , DC-DC boost converter , Proportional-integral (PI) controller , Fuzzy controller
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213853 , uj:21204 , Citation: Padmanaban, S. et al. 2016. PI and fuzzy control strategies for high voltage output DC-DC boost power converter – hardware implementation and analysis.
- Description: Abstract: This paper presents the control strategies by Proportional- Integral (P-I) and Fuzzy Logic (FL) for a DC-DC boost power converter for high output voltage configuration. Standard DC-DC converters are traditionally used for high voltage direct current (HVDC) power transmission systems. But, lack its performances in terms of efficiency, reduced transfer gain and increased cost with sensor units. Moreover, the internal self-parasitic components reduce the output voltage and efficiency of classical high voltage converters (HVC). This investigation focused on extra highvoltage (EHV) DC-DC boost power converter with inbuilt voltage-lift technique and overcome the aforementioned deficiencies. Further, the control strategy is adapted based on proportional-integral (P-I) and fuzzy logic, closed-loop controller to regulate the outputs and ensure the performances. Complete hardware prototype of EHV converter is realized and experimental tasks are set out with digital signal processor (DSP) TMS320F2812 under different perturbation conditions. Observed set of results is provided and shown good conformity with developed hypothetical predictions.
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Single-phase seven-level stack multicell converter using level shifting SPWM technique
- Padmanaban, Sanjeevikumar, Siano, Pierluigi, Ertas, Ahmet H., Selvamuthukumaran, Rajasekar, Maroti, Pandav Kiran
- Authors: Padmanaban, Sanjeevikumar , Siano, Pierluigi , Ertas, Ahmet H. , Selvamuthukumaran, Rajasekar , Maroti, Pandav Kiran
- Date: 2016
- Subjects: Multilevel Inverter (MLI) , Stacked Multicell converter (SMC) , SPWM Technique
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213869 , uj:21206 , Citation: Padmanaban, S. et al. 2016. Single-phase seven-level stack multicell converter using level shifting SPWM technique.
- Description: Abstract: This paper presents a single-phase seven-level stack multicell converter (SMC) which provides a viable solution for multilevel converter. Conventional cascaded multilevel inverter (MLI) removes the drawbacks of clamping diodes and clamping capacitors topologies. However, in a cascaded MLI number of voltage source and power switches increases as the number of level increases. The main advantage of single-phase SMC converter is only two DC sources are needed for any number of levels. Level shifting SPWM technique has been incorporated to achieve gate pulses, in which carrier wave of 20kHz is compared with 50Hz sinusoidal reference wave at a modulation index of 1 and 0.9. Total harmonic distortion (THD) for SMC converter is achieved at 1.55% and 5.26% with and without filter respectively. The seven-level SMC topology is simulated in MATLAB/SIMULINK and simulation results are provided to verify the performance.
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- Authors: Padmanaban, Sanjeevikumar , Siano, Pierluigi , Ertas, Ahmet H. , Selvamuthukumaran, Rajasekar , Maroti, Pandav Kiran
- Date: 2016
- Subjects: Multilevel Inverter (MLI) , Stacked Multicell converter (SMC) , SPWM Technique
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/213869 , uj:21206 , Citation: Padmanaban, S. et al. 2016. Single-phase seven-level stack multicell converter using level shifting SPWM technique.
- Description: Abstract: This paper presents a single-phase seven-level stack multicell converter (SMC) which provides a viable solution for multilevel converter. Conventional cascaded multilevel inverter (MLI) removes the drawbacks of clamping diodes and clamping capacitors topologies. However, in a cascaded MLI number of voltage source and power switches increases as the number of level increases. The main advantage of single-phase SMC converter is only two DC sources are needed for any number of levels. Level shifting SPWM technique has been incorporated to achieve gate pulses, in which carrier wave of 20kHz is compared with 50Hz sinusoidal reference wave at a modulation index of 1 and 0.9. Total harmonic distortion (THD) for SMC converter is achieved at 1.55% and 5.26% with and without filter respectively. The seven-level SMC topology is simulated in MATLAB/SIMULINK and simulation results are provided to verify the performance.
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