Comparative evaluation of multi-loop control schemes for a high-bandwidth AC power source with a two-stage LC output filter

Cortés, Patricio; Boillat, David O.; Ertl, H.; Kolar, Johann W.

doi:10.1109/icrera.2012.6477339

Cited by 18 publications

(13 citation statements)

References 16 publications

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“…[13] Many works in this domain first introduced a new method of rapid prototyping called HIL (Hardware-In-theloop Simulation), a simulation that implements the modeling of the studied environment and the physical equipment in closed loop, to bring more solutions for this challenge. The method was initially applied in the automotive industry [14] and has been used successfully to estimate the behavior of continuous analog processes under various control laws [15], [16]. The implementation of a HIL system is efficient in terms of computing power and speed of execution to simulate in real time the physical behavior of the systems with accuracy.…”

Section: B Real-time Simulator 1) Conceptmentioning

confidence: 99%

Simulation & Emulation platform for smart grid technologies

Gangat

Grondin

Issoufaly

et al. 2018

2018 International Conference on Control, Electronics, Renewable Energy and Communications (ICCEREC)

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Energy management has become a very popular topic in the past few years, especially with the protection of the environment. The use and management of renewable energy sources (RES) has therefore become a necessity. In this context, innovative EMSs (Energy Management Systems) are required to bring a new way to monitor energy flows in micro grids. The interaction between physical and digital elements is relying on the use of Information and Communication Technologies (ICTs). A side effect is the appearance of Multi-Agent System (MAS) whose aim is to manage efficiently energy flows to reduce consumer bills, to minimize the use of fossil fuel in favor of RES. In this paper, we introduce "GYSOMATE", a simulation platform to test different management strategies, with the implementation of predictive tools and MAS to improve the EMS.

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Section: B Real-time Simulator 1) Conceptmentioning

confidence: 99%

Simulation & Emulation platform for smart grid technologies

Gangat

Grondin

Issoufaly

et al. 2018

2018 International Conference on Control, Electronics, Renewable Energy and Communications (ICCEREC)

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“…Figure 5: (a) Commonly employed configuration with an inner current control loop for I A0 and an outer voltage-control loop for V A,out to introduce active damping. (b) Alternative implementation with an inner capacitor-current feedback loop and an outer voltage-control loop [30], [31].…”

Section: Structuresmentioning

confidence: 99%

“…Section III-C, in case of reference and load changes are expected. Furthermore, it is shown in [31] that, for the case of no load, the capacitor-current feedback emulates a resistor, R 1 = k 1 , connected in series to L 1 , cf. Figs.…”

Section: (B)]mentioning

confidence: 99%

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Optimization and Comparative Evaluation of Multiloop Control Schemes for Controllable AC Sources With Two-Stage <inline-formula> <tex-math notation="LaTeX">$LC$</tex-math> </inline-formula> Output Filters

Boillat

Krismer

Kolar

2016

IEEE Trans. Power Electron.

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This work investigates the control system design and its small-signal properties for the output stage of a high bandwidth, four-quadrant three-phase switch-mode controllable AC voltage source (CVS) with an output power of 10 kW, a switching frequency of 48 kHz, and a two-stage LC output filter. Each output phase of the CVS is operated individually, i.e. the phase voltages are generated with reference to the DC inputvoltage midpoint, to allow maximum flexibility in the generation of the output-voltage waveforms to supply a wide range of different load types, such as DC, single-phase, and general threephase loads including constant-power loads leading to negative small-signal load-resistance values.Three suitable multi-loop control structures with inner currentand outer voltage-control loops are motivated, modeled, and are optimized with respect to different control performance indicators, e.g. small-signal control bandwidth, and for common boundary conditions, e.g. maximum overshoot of the output voltage in case of a reference voltage step. All structures employ conventional P and PI controllers, due to their simplicity and widespread use. Among the three structures, the capacitorcurrent feedback-control structure, which controls the two filter capacitor currents and the output voltage, is identified to be most competitive. The small-signal bandwidth determined for this structure is between 7.1 kHz and 15.5 kHz, depending on the value of the load resistance. This result, in combination with an excellent matching of calculated and measured step responses of the output voltage of a 10 kW hardware prototype, point out the effectiveness of the selected control structure and the usability of control structures that are composed of conventional P and PI controllers. NOMENCLATURE f s Switching frequencyContinuous-time functions of voltages, currents, etc.Discrete-time functions with sampling period T 0 and k ∈ Z X = X(s) = L{x(t)} Laplace transform of the corresponding continuous-time function X(z) = Z{x k } z-transform of the corresponding discrete-time functioñ R load Equivalent small-signal load resistance

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“…However, for the fourth-order system, the reported passive damping uses a low-valued resistor in series with filter capacitors to flatten the frequency response, at the cost of reduced efficiency [19]. Feedback controller supplemented with passive damping was adopted in Reference [20], which results in relatively lower power losses. In addition to an RL-branch between the capacitive filter of the first and inductive filter of the second LC stage, authors in Reference [21] proposed a multi-loop controller.…”

Section: Introductionmentioning

confidence: 99%

A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier

Zaman

Zheng

et al. 2018

Electronics

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Since the parasitic voltage ringing and switching power losses limit the operation of active devices at elevated frequencies; therefore, a higher‐order inductor‐capacitor (LC) filter is commonly used, which offers extended attenuation above the cutoff frequency and thus, improves the total harmonic distortion (THD) of the amplifier. This paper applies the concept of integral sliding‐mode control to a fourth‐order class‐D amplifier. Two fixed‐frequency double integral sliding‐mode (FFDISM) controllers are proposed, where one uses the inductor current while the other involves the capacitor current feedback. Their equivalent control equations are derived, but from the realization viewpoint, the controller using the capacitor current feedback is advantageous and, therefore, is selected for final implementation. The performance of the proposed FFDISM controller for fourth‐order GaN class‐D amplifier is confirmed using simulation and experimental results.

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Comparative evaluation of multi-loop control schemes for a high-bandwidth AC power source with a two-stage LC output filter

Cited by 18 publications

References 16 publications

Simulation & Emulation platform for smart grid technologies

Simulation & Emulation platform for smart grid technologies

Optimization and Comparative Evaluation of Multiloop Control Schemes for Controllable AC Sources With Two-Stage <inline-formula> <tex-math notation="LaTeX">$LC$</tex-math> </inline-formula> Output Filters

A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier

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