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Digital Signal Processing in Power Electronics Control Circuits
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Digital Signal Processing in Power Electronics Control Circuits

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F3: Power Electronics".

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 9946

Special Issue Editor

Prof. Dr. Krzysztof Sozański

E-Mail Website
Guest Editor
Institute of Automation and Electronics and Electrical Engineering, University of Zielona Góra, ul. Szafrana 9, 65-516 Zielona Góra, Poland
Interests: digital signal processing; digital signal processors; active power filters; high-quality digital class-D audio amplifier; electroacoustics; control algorithm; implementation of control algorithms

Special Issue Information

Dear Colleagues,

Power electronics digital control circuits are an important element of modern electrical systems, with their applications ranging from power stations, through electric cars to household electronics. Modern control circuits are primarily digital, and their design creates serious challenges that had never been encountered in their analog counterparts.

The output current and voltage of these circuits is a result of the overall circuit design; ensuring their high quality is critical for many specialized applications, such as class-D audio power amplifiers, active power filters or nuclear magnetic resonance circuits (NMR).

The Special Issue on the topic of "Digital Signal Processing (DSP) in Power Electronics Control Circuits" will focus on the problems concerning design of effective control circuits.

Firstly, the inputs of digital circuits are typically composed of analog signals, which represent circuit current and voltage. The optimization of analog signal acquisition for digital circuits necessitates a careful selection of the required sampling rate, signal range, and the number of bits, as well as the implementation of galvanic isolators, and anti-aliasing filters, considering their combined effect on the signal-to-noise ratio (SNR), the bandwidth, and jitter.

Another challenge is the design of the digital signal processing circuit. A wide range of electronic components can be selected for this application, including digital signal processors, microcontrollers, and FPGAs. However, finding the appropriate device for the right application has knock-on effects on the entire system. Additionally, DSP algorithms play an important role, including the choice of their arithmetic (fixed point vs. floating point).

Finally, in most cases, the modulator of the inverter represents the bottleneck of the overall control circuit. Any advancements in this area would enable an improvement in the overall design performance.

We would like to welcome submissions on the topic of "Digital Signal Processing in Power Electronics Control Circuits", presenting novel research concerning approaches to tackle any of the above problems. The results can include analysis, design, simulations, and implementation of the digital signal processing circuits for power electronics.

Prof. Dr. Krzysztof Sozański
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Control circuit for power electronics circuits
  • Pulse width modulation
  • Implementation of control algorithm
  • Time domain analysis
  • Noise shaping circuits
  • Current control
  • Digital signal processing
  • Digital filters
  • Simultaneous sampling
  • Multirate circuits
  • Ac and dc current sensors
  • Ac and dc voltage sensors
  • A/d and d/a conversion
  • Aliasing
  • Jitter
  • Beat interference
  • Quantization noise
  • Galvanic isolation

Published Papers (4 papers)

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Research

28 pages, 5373 KiB  
Article
Benchmarking Real-Time Control Platforms Using a Matlab/Simulink Coder with Applications in the Control of DC/AC Switched Power Converters
by Jesus D. Vasquez-Plaza, Andres F. Lopez-Chavarro, Enrique A. Sanabria-Torres, Juan F. Patarroyo-Montenegro and Fabio Andrade
Energies 2022, 15(19), 6940; https://doi.org/10.3390/en15196940 - 22 Sep 2022
Cited by 5 | Viewed by 1793
Abstract
In the control of DC/AC switched power converters (SPC), one of the most important aspects to be considered is the selection of the real-time control platform. The real-time control platform must be able to meet the high performance efficiency and regulation requirements of [...] Read more.
In the control of DC/AC switched power converters (SPC), one of the most important aspects to be considered is the selection of the real-time control platform. The real-time control platform must be able to meet the high performance efficiency and regulation requirements of the DC/AC SPC, as these typically operate at switching frequencies in the order of kHz to MHz. For this reason, the hardware characteristics of the ADC and PWM, and the processing capacity of the real-time control platform are of vital importance when implementing advanced digital controllers that maintain voltage and current levels within regulatory standards. In this context, we aimed to perform a comparative study of the computation times of different real-time control platforms when implementing different control strategies for DC/AC switched power converters. We also analyzed the impact of the real-time control platforms on the THD of the voltages generated by the DC/AC switched power converters. With the help of this paper, researchers and developers will have criteria to select which real-time control platform to use in real-time control for DC/AC SPC applications. Full article
(This article belongs to the Special Issue Digital Signal Processing in Power Electronics Control Circuits)
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28 pages, 10805 KiB  
Article
Modeling, Simulation and Development of Grid-Connected Voltage Source Converter with Selective Harmonic Mitigation: HiL and Experimental Validations
by Suparak Srita, Sakda Somkun, Tanakorn Kaewchum, Wattanapong Rakwichian, Peter Zacharias, Uthen Kamnarn, Jutturit Thongpron, Damrong Amorndechaphon and Matheepot Phattanasak
Energies 2022, 15(7), 2535; https://doi.org/10.3390/en15072535 - 30 Mar 2022
Cited by 7 | Viewed by 2667
Abstract
This paper elaborates on a development technique for the grid-connected voltage source converter (VSC). We propose a simulation technique in the MATLAB/Simulink environment that emulates the operation of the discrete-time controlled grid-connected VSC. The switched-circuit modeling approach is used for simulation of the [...] Read more.
This paper elaborates on a development technique for the grid-connected voltage source converter (VSC). We propose a simulation technique in the MATLAB/Simulink environment that emulates the operation of the discrete-time controlled grid-connected VSC. The switched-circuit modeling approach is used for simulation of the power stage in the continuous-time domain with the physical unit scale. The discrete-time control algorithm is implemented in an interpreted MATLAB function in the per-unit scale, which synchronizes with the switching period. Such a control algorithm is easily translated into the C language for programing of the 32-bit C2000 DSP controller with the same regulators’ parameters. The proposed platform was validated with a hardware-in-the-loop real-time simulator and with a 5-kVA 3-phase LCL-filtered grid-connected VSC. The discrete-time control scheme was implemented in the synchronous reference frame control with proportional-integral with multi-resonant controllers at harmonic orders 6th and 12th for suppression of the grid voltage harmonic orders 5th, 7th, 11th, and 13th. The experimental results closely agreed with the simulation results. The experimental grid currents complied with the IEEE 1547 standard thanks to the multi-resonant controllers. The proposed platform provides a smooth transition from implementation to a near-commercial prototype with a low investment cost in simulation and rapid prototyping tools. A MATLAB/Simulink VSC model is provided as an attachment of this paper. Full article
(This article belongs to the Special Issue Digital Signal Processing in Power Electronics Control Circuits)
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13 pages, 4405 KiB  
Article
Extended Digital Programmable Low-Pass Filter for Direct Noise Filtering of Three-Phase Variables in Low-Cost AC Drives
by Chinchul Choi and Wootaik Lee
Energies 2022, 15(6), 2096; https://doi.org/10.3390/en15062096 - 13 Mar 2022
Cited by 2 | Viewed by 1932
Abstract
This paper proposes an extended structure of a programmable low-pass filter (PLPF) for direct filtering of three-phase variables in automotive AC drives. The PLPF adjusts its cut-off frequency according to the synchronous frequency of the AC motors. Moreover, it compensates gain attenuation and [...] Read more.
This paper proposes an extended structure of a programmable low-pass filter (PLPF) for direct filtering of three-phase variables in automotive AC drives. The PLPF adjusts its cut-off frequency according to the synchronous frequency of the AC motors. Moreover, it compensates gain attenuation and phase delay of the fundamental component signal. The conventional PLPF can only be applied to variables in the stationary reference frame. In order to obtain filtered three-phase variables, an inverse reference frame transformation is required. However, the extended structure, which includes reference frame transformations, can be directly applied to three-phase variables and remove the noise in the earlier stage before transformation. The extended PLPF is more useful for making signal flows clear and intuitive when organizing an algorithm that directly requires three-phase variables. The extended PLPF requires a moderate computational load corresponding with that of the conventional PLPF because its formula is simplified by use of Kirchhoff’s law. The reduction in the execution time is critical for implementing the filter based on low-cost microcontrollers. Using case studies, dead-time compensations and open-phase fault detection for AC drives show the effectiveness of the extended PLPF. Full article
(This article belongs to the Special Issue Digital Signal Processing in Power Electronics Control Circuits)
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18 pages, 5787 KiB  
Article
Pulse-Width Modulation Template for Five-Level Switch-Clamped H-Bridge-Based Cascaded Multilevel Inverter
by Charles Ikechukwu Odeh, Dmytro Kondratenko, Arkadiusz Lewicki, Marcin Morawiec, Andrzej Jąderko and Janusz Baran
Energies 2021, 14(22), 7726; https://doi.org/10.3390/en14227726 - 18 Nov 2021
Cited by 7 | Viewed by 1845
Abstract
This article presents a carrier-based pulse-width modulation (PWM) template for a 5-level, H bridge-based cascaded multilevel inverter (MLI). The developed control concept generates adequate modulation template for this inverter topology wherein a sinusoidal modulating waveform is modified to fit in a single triangular [...] Read more.
This article presents a carrier-based pulse-width modulation (PWM) template for a 5-level, H bridge-based cascaded multilevel inverter (MLI). The developed control concept generates adequate modulation template for this inverter topology wherein a sinusoidal modulating waveform is modified to fit in a single triangular carrier signal range. With this modulation approach, classical multiplicity and synchronization of the triangular carrier signals criterion for the extension of sinusoidal pulse-width modulation, SPWM, to several cascaded 5-level, H-bridge-based MLI topology are removed. The proposed template can be used on the inverter configuration of any level with no further control modification. Nearly even distribution of switching pulses and equalized individual cascaded cell output power were achieved with the proposed modulation scheme. Three 5-level, H-bridge-based MLI units were cascaded for 1-phase, 13-level inverter operation; simulation and experimental results are adequately presented. Full article
(This article belongs to the Special Issue Digital Signal Processing in Power Electronics Control Circuits)
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