EPE Association: EPE 2019 - LS3c: Standard and Advanced Control Techniques for Power Converters (part I)

EPE 2019 - LS3c: Standard and Advanced Control Techniques for Power Converters (part I)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2019 ECCE Europe - Conference > EPE 2019 - Topic 03: Measurement and Control > EPE 2019 - LS3c: Standard and Advanced Control Techniques for Power Converters (part I)

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   A Comparative Study on HCC Method for Grid-Connected LCL Filter with Active Damping
By Jitendra SINGH [View]
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Abstract: This paper presents a comparative study on the performance of single band hysteresis current control (SBHCC) technique and proposed a modified double band hysteresis current control (MDBHCC) technique for single-phase grid-connected inverters with LCL-filter. The MDBHCC method with proportional resonant (PR) controller provides zero steady-state error at lower switching frequency as compared to SBHCC. To damp-out LCL-filter resonance, an active damping method is introduced. The transient and steady-state performance of the proposed controllers is analyzed. The proposed MDBHCC have the features of unipolar PWM technique with low switching losses. Simulation and experimental results are presented to validate the analysis and performance of controller.

   Model-Based Circulating Current References for MMC Cell Voltage Ripple Reduction and Loss-Equivalent Arm Current Assessment
By Hendrik FEHR [View]
[Download]

Abstract: Circulating current references for Modular Multilevel Converters (MMCs) are compared by means of their cell capacitor voltage ripple, arm current root mean square, averaged rectified value, and maximum absolute value. One reference beats the classic 2nd harmonic in all criteria in a notable operating range.

   On the Computation of Optimized Pulse Patterns with Zero Common Mode Voltage
By Ioannis TSOUMAS [View]
[Download]

Abstract: This work addresses the computation of three-level optimized pulse patterns with zero common mode component. Linear constraints of the switching angles are formulated which are employed in their computation. The proposed approach is straightforward and avoids ambiguous formulations of the problem in the frequency domain or complex mixed time-frequency formulations. Based on the linear constraints of the switching angles a theoretical limit of the maximum modulation index of pulse patterns with zero common mode is also established. Characteristic numerical results of the computed pulse patterns are presented and discussed.

   Reconfigurable Partial-Decentralized Control of a Multiphase Converter for Fail-Operational Automotive Processor Power Supply
By Miguel MANNES HILLESHEIM [View]
[Download]

Abstract: In this paper, a decentralized control technique used to generate the PWM signals of a multiphase converter is presented. This technique of control dedicated to interleave the signals and balance the inductor currents of the converter offers both redundancy and fault tolerant ability which are mandatory to address ADAS automotive requirements. A local controller, involved with each converter's cell, implementing two very simple internal functions is described. Then a VRM supplying a last-generation automotive processor is carried out. In order to demonstrate the robustness of the proposal, one of the converter legs is deactivated during operation. Experimental results show that, during a short transient, the remaining active legs then automatically reconfigure to keep the processor safe and operational.

EPE 2019 - LS3c: Standard and Advanced Control Techniques for Power Converters (part I)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2019 ECCE Europe - Conference > EPE 2019 - Topic 03: Measurement and Control > EPE 2019 - LS3c: Standard and Advanced Control Techniques for Power Converters (part I)
	[return to parent folder]

	A Comparative Study on HCC Method for Grid-Connected LCL Filter with Active Damping By Jitendra SINGH	[View] [Download]
Abstract: This paper presents a comparative study on the performance of single band hysteresis current control (SBHCC) technique and proposed a modified double band hysteresis current control (MDBHCC) technique for single-phase grid-connected inverters with LCL-filter. The MDBHCC method with proportional resonant (PR) controller provides zero steady-state error at lower switching frequency as compared to SBHCC. To damp-out LCL-filter resonance, an active damping method is introduced. The transient and steady-state performance of the proposed controllers is analyzed. The proposed MDBHCC have the features of unipolar PWM technique with low switching losses. Simulation and experimental results are presented to validate the analysis and performance of controller.

	Model-Based Circulating Current References for MMC Cell Voltage Ripple Reduction and Loss-Equivalent Arm Current Assessment By Hendrik FEHR	[View] [Download]
Abstract: Circulating current references for Modular Multilevel Converters (MMCs) are compared by means of their cell capacitor voltage ripple, arm current root mean square, averaged rectified value, and maximum absolute value. One reference beats the classic 2nd harmonic in all criteria in a notable operating range.

	On the Computation of Optimized Pulse Patterns with Zero Common Mode Voltage By Ioannis TSOUMAS	[View] [Download]
Abstract: This work addresses the computation of three-level optimized pulse patterns with zero common mode component. Linear constraints of the switching angles are formulated which are employed in their computation. The proposed approach is straightforward and avoids ambiguous formulations of the problem in the frequency domain or complex mixed time-frequency formulations. Based on the linear constraints of the switching angles a theoretical limit of the maximum modulation index of pulse patterns with zero common mode is also established. Characteristic numerical results of the computed pulse patterns are presented and discussed.

	Reconfigurable Partial-Decentralized Control of a Multiphase Converter for Fail-Operational Automotive Processor Power Supply By Miguel MANNES HILLESHEIM	[View] [Download]
Abstract: In this paper, a decentralized control technique used to generate the PWM signals of a multiphase converter is presented. This technique of control dedicated to interleave the signals and balance the inductor currents of the converter offers both redundancy and fault tolerant ability which are mandatory to address ADAS automotive requirements. A local controller, involved with each converter's cell, implementing two very simple internal functions is described. Then a VRM supplying a last-generation automotive processor is carried out. In order to demonstrate the robustness of the proposal, one of the converter legs is deactivated during operation. Experimental results show that, during a short transient, the remaining active legs then automatically reconfigure to keep the processor safe and operational.