Assessment and Optimization of the Transient Response of Proportional-Resonant Current Controllers for Distributed Power Generation Systems

Vidal, Antonio M.; Freijedo, Francisco D.; Yepes, Alejandro G.; Fernández-Comesaña, Pablo; Malvar, Jano; López, Oscar L.; Doval-Gandoy, Jesús

doi:10.1109/tie.2012.2188257

Cited by 183 publications

(163 citation statements)

References 51 publications

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“…5, where a proportional-resonant configuration is applied. Resonant controllers, also referred to as harmonic compensators, are a relatively novel and promising type of controllers [15]- [19]. They work in the stationary frame and, in the parallel configuration shown in Fig.…”

Section: Control Architecturementioning

confidence: 99%

Single-Phase Inverter for Grid-Connected and Intentional Islanding Operations in Electric Utility Systems

Lidozzi¹,

Calzo²,

Solero³

et al. 2016

Journal of Power Electronics

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Small distributed generation units are usually connected to the main electric grid through single-phase voltage source inverters. Grid operating conditions such as voltage and frequency are not constant and can fluctuate within the range values established by international standards. Furthermore, the requirements in terms of power factor correction, total harmonic distortion, and reliability are getting tighter day by day. As a result, the implementation of reliable and efficient control algorithms, which are able to adjust their control parameters in response to changeable grid operating conditions, is essential. This paper investigates the configuration topology and control algorithm of a single-phase inverter with the purpose of achieving high performance in terms of efficiency as well as total harmonic distortion of the output current. Accordingly, a Second Order Generalized Integrator with a suitable Phase Locked Loop (SOGI-PLL) is the basis of the proposed current and voltage regulation. Some practical issues related to the control algorithm are addressed, and a solution for the control architecture is proposed, based on resonant controllers that are continuously tuned on the basis of the actual grid frequency. Further, intentional islanding operation is investigated and a possible procedure for switching from grid-tied to islanding operation and vice-versa is proposed.

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Section: Control Architecturementioning

confidence: 99%

Single-Phase Inverter for Grid-Connected and Intentional Islanding Operations in Electric Utility Systems

Lidozzi¹,

Calzo²,

Solero³

et al. 2016

Journal of Power Electronics

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“…The dynamic instantaneous power of the filter inductor is taken into account in Equations (3) and (4); L indicates the output filter inductor of the grid-connected inverters; superscript P indicates the positive 22 …”

Section: Modelling Of the Systemmentioning

confidence: 99%

“…The UC current loop is much faster than the DC link voltage loop, so the value of can be 1, with which the transfer function of controller and control objects can be described as: To achieve AC compensation of the UC, the R regulator of the DC link voltage has been designed by the root-locus method [22]. As shown in Figure 2, the open-loop transfer function matrix of the AC component of the DC link voltage is: (18) where is the current closed-loop transfer function of the UC.…”

Section: Control Design and Simulationmentioning

confidence: 99%

Improved Control Strategy for Microgrid Ultracapacitor Energy Storage Systems

Dou

Quan

et al. 2014

Energies

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Ultracapacitors (UCs), with their features of high power density and high current charge-discharge, have become the best choice for dynamic power compensation to improve the stability of microgrids and are increasingly being applied in microgrids. This paper presents the control of an energy storage system (ESS) based on ultracapacitors in the context of grid-connected microgrids. The ESS is composed of DC/AC and DC/DC converters tied by a dc link. An improved dynamic model for the ESS is proposed. Based on the proposed model a Proportional-Integral-Resonant (PIR) DC link voltage controller is proposed to maintain the DC link voltage through the charging-discharging control of ultracapacitors, capable of working properly under all operating conditions. An extra double frequency component is injected into the UC current by a R controller to dynamically compensate for DC instantaneous power and double frequency AC instantaneous power due to unbalanced grid conditions and disturbances. This feature maintains the DC link voltage constant under unbalanced conditions and increases the degrees of freedom of the DC/AC converter and thus facilitates the application of UCs in microgrids. Simulation and experimental results verify the effectiveness of the proposed control strategy. OPEN ACCESSEnergies 2014, 7 8096

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“…The permanent magnet synchronous motor (PMSM), which integrates the advantages of high-power density, high efficiency, light weight, easy maintenance, and good reliability, has been widely used in commerce, industry, transportation, and so on [1,2], thus it attracts the interest of many researchers from the international electrotechnical field [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Research on Strategies and Methods Suppressing Permanent Magnet Demagnetization in Permanent Magnet Synchronous Motors Based on a Multi-Physical Field and Rotor Multi-Topology Structure

Lin

et al. 2017

Energies

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Abstract:In this paper, a permanent magnet synchronous motor (PMSM) with sleeves on the rotor outer surface is investigated. The purpose of sleeves is to fix the permanent magnets and protect them from being destroyed by the large centrifugal force. However, the sleeve material characteristics have a great influence on the PMSM, and therewith, most of the rotor eddy-current losses are generated in the rotor sleeve, which could increase the device temperature and even cause thermal demagnetization of the magnets. Thus, a sleeve scheme design with low eddy-current losses is necessary, and a method suppressing the local temperature peak of permanent magnets is presented. The 3-D electromagnetic finite element model of a 12.5 kW, 2000 r/min PMSM with a segmented sleeve is established, and the electromagnetic field is calculated by using the finite element method. The results show the effectiveness of the presented method in reducing the eddy current losses in the rotor. Using the thermal method, it can be found that the maximum temperature position and zone of permanent magnet will change. Thus, some strategies are comparatively analyzed in order to obtain the change rule of the position and zone. The obtained conclusions may provide a useful reference for the design and research of PMSMs.

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Assessment and Optimization of the Transient Response of Proportional-Resonant Current Controllers for Distributed Power Generation Systems

Cited by 183 publications

References 51 publications

Single-Phase Inverter for Grid-Connected and Intentional Islanding Operations in Electric Utility Systems

Single-Phase Inverter for Grid-Connected and Intentional Islanding Operations in Electric Utility Systems

Improved Control Strategy for Microgrid Ultracapacitor Energy Storage Systems

Research on Strategies and Methods Suppressing Permanent Magnet Demagnetization in Permanent Magnet Synchronous Motors Based on a Multi-Physical Field and Rotor Multi-Topology Structure

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