EPE Association: EPE 2020 - DS2i-2: Standard and Advanced current/voltage/synchronisation control techniques-2

EPE 2020 - DS2i-2: Standard and Advanced current/voltage/synchronisation control techniques-2
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 03: Measurement and Control > EPE 2020 - DS2i-2: Standard and Advanced current/voltage/synchronisation control techniques-2

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   A DC/DC buck-boost converter control using sliding surface mode controller and adaptive PID controller
By Bassem SALEH [View]
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Abstract: Integration of various intermittent renewable energy sources and diesel generators for microgrid and off-grid applications demands DC/DC converters to be more agnostic to input voltage and load changes. Novel combination of sliding surface mode control and adaptive PID is presented to control the output voltage of a buck-boost converter. The converter and controller are modeled using MATLAB/SIMULINK.Adaptive controller resulted in up to 89\% drop in the RMS voltage error compared to typical single PID configuration. A zero steady state error was also achieved and the performance was consistent at different loads.

   Polynomial multi-variable control strategy for flux balancing in Dual Active Bridge Converter
By Pierre-Baptiste STECKLER [View]
[Download]

Abstract: An attractive option for the Dual Active Bridge converter is to integrate the AC coil inside the transformer, using its leakage inductance. However, this complicates the flux balancing process. To address that, a novel model and a multi-variable linear control for power and magnetizing average currents are proposed.

   Stability and Robustness analysis of Fractional Proportional Resonant controllers in Current-Controlled Voltage-Source-Inverters
By Daniel HEREDERO-PERIS [View]
[Download]

Abstract: This paper extends the Nyquist trajectory analysis for Fractional Proportional Resonant controllersapplied to Current-Controlled Voltage-Source-Inverters in the continuous-time domain. The objectiveis to analyse the stability and robustness of the system under the use of this controller-type. Applyingfrequency specifications new analytical expressions are obtained and used to tune the controller.

   System Frequency Dynamic Response of a Novel, Self-Synchronizing Inverter in a High Renewable Penetration Grid
By Christian PERENYI [View]
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Abstract: This paper presents a self-synchronizing controller achieving a current tracking objective without knowledge of the grid parameters. An estimated rotating reference frame (_d -frame) is utilized. Within the control scheme, adaptive compensation terms facilitate the current tracking objective and, simultaneously, accounts for the unavailable grid voltage magnitude, grid frequency, and grid phase, hence eliminating the need for an additional measurement and feedback system for synchronization, such as a Phase-Locked Loop (PLL) which are sensitive to harmonics, to disturbances and to large frequency deviations causing unnecessary energy losses.A system frequency behavior study is developed through this article by comparing a PQ-PLL controller to the novel self-synchronizing design under the conditions of a variable inertia and renewable penetration ratio. Using the novel controller in a high-renewable (low-inertia) grid indicates that the monitored performance metrics are significantly improved when compared to PLL-controlled, inverter-dominated grid. When benchmarked to the PQ-PLL controller results, increasing the penetration ratio will have a positive impact on the self-synchronizing controller due to its adaptive nature which depends only on the current control errors signals. Lowering the grid's inertia shows that the self-synchronizing inverter reaches steady-state significantly faster than the PQ-PLL one due to the internal dynamics of the adaptive control by disrupting the need for a cascaded control scheme.

EPE 2020 - DS2i-2: Standard and Advanced current/voltage/synchronisation control techniques-2
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 03: Measurement and Control > EPE 2020 - DS2i-2: Standard and Advanced current/voltage/synchronisation control techniques-2
	[return to parent folder]

	A DC/DC buck-boost converter control using sliding surface mode controller and adaptive PID controller By Bassem SALEH	[View] [Download]
Abstract: Integration of various intermittent renewable energy sources and diesel generators for microgrid and off-grid applications demands DC/DC converters to be more agnostic to input voltage and load changes. Novel combination of sliding surface mode control and adaptive PID is presented to control the output voltage of a buck-boost converter. The converter and controller are modeled using MATLAB/SIMULINK.Adaptive controller resulted in up to 89\% drop in the RMS voltage error compared to typical single PID configuration. A zero steady state error was also achieved and the performance was consistent at different loads.

	Polynomial multi-variable control strategy for flux balancing in Dual Active Bridge Converter By Pierre-Baptiste STECKLER	[View] [Download]
Abstract: An attractive option for the Dual Active Bridge converter is to integrate the AC coil inside the transformer, using its leakage inductance. However, this complicates the flux balancing process. To address that, a novel model and a multi-variable linear control for power and magnetizing average currents are proposed.

	Stability and Robustness analysis of Fractional Proportional Resonant controllers in Current-Controlled Voltage-Source-Inverters By Daniel HEREDERO-PERIS	[View] [Download]
Abstract: This paper extends the Nyquist trajectory analysis for Fractional Proportional Resonant controllersapplied to Current-Controlled Voltage-Source-Inverters in the continuous-time domain. The objectiveis to analyse the stability and robustness of the system under the use of this controller-type. Applyingfrequency specifications new analytical expressions are obtained and used to tune the controller.

	System Frequency Dynamic Response of a Novel, Self-Synchronizing Inverter in a High Renewable Penetration Grid By Christian PERENYI	[View] [Download]
Abstract: This paper presents a self-synchronizing controller achieving a current tracking objective without knowledge of the grid parameters. An estimated rotating reference frame (_d -frame) is utilized. Within the control scheme, adaptive compensation terms facilitate the current tracking objective and, simultaneously, accounts for the unavailable grid voltage magnitude, grid frequency, and grid phase, hence eliminating the need for an additional measurement and feedback system for synchronization, such as a Phase-Locked Loop (PLL) which are sensitive to harmonics, to disturbances and to large frequency deviations causing unnecessary energy losses.A system frequency behavior study is developed through this article by comparing a PQ-PLL controller to the novel self-synchronizing design under the conditions of a variable inertia and renewable penetration ratio. Using the novel controller in a high-renewable (low-inertia) grid indicates that the monitored performance metrics are significantly improved when compared to PLL-controlled, inverter-dominated grid. When benchmarked to the PQ-PLL controller results, increasing the penetration ratio will have a positive impact on the self-synchronizing controller due to its adaptive nature which depends only on the current control errors signals. Lowering the grid's inertia shows that the self-synchronizing inverter reaches steady-state significantly faster than the PQ-PLL one due to the internal dynamics of the adaptive control by disrupting the need for a cascaded control scheme.