A Novel Reduced Switching Loss Bidirectional AC/DC Converter PWM Strategy With Feedforward Control for Grid-Tied Microgrid Systems

Liao, Yi‐Hung

doi:10.1109/tpel.2013.2260872

Cited by 48 publications

(3 citation statements)

References 26 publications

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“…A modified dual loop controller proposed in [33], in which the first loop calculates the required power and the second loop controls the AC side current, controls the converter. A switching pattern proposed in [34] is utilised in order to reduce switching losses.…”

Section: Grid Side Convertermentioning

confidence: 99%

Power sharing strategy for multi‐source electrical auxiliary power unit with bi‐directional interaction capability

Tashakor

Arabsalmanabadi

Iraji

et al. 2020

IET Power Electronics

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This study presents a hierarchical control strategy for an auxiliary power unit (APU) for aircraft to coordinate multiple power sources and control developed power electronic interfaces. The study benefits from the presence of a hybrid energy system in paralleled structure to the main generator as the complementary system. The employed structure enhances power quality and improves the voltage profile of the high-voltage DC bus. Furthermore, the developed bi-directional topology provides the possibility of interaction with the grid. Considering the APU features in an aircraft, a hierarchical control strategy with different levels of control, timescale, dynamic response, and significance are developed. The developed controller consists of a power management algorithm in the higher level, and local voltage and current controllers in the lower one. The algorithm aims to maximise the PV subsystem utilisation, overcome voltage fluctuations, increase power density, reduce operation costs, and increase system availability while allowing further development to larger systems. Simulation and experimental results confirm the robustness of the algorithm. The result shows that the proposed power sharing strategy optimises the system utilisation while achieving a high-quality voltage profile under severe fluctuations. Moreover, the stress on the battery pack is reduced to improve the life cycle and reduce operation costs.

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Section: Grid Side Convertermentioning

confidence: 99%

Power sharing strategy for multi‐source electrical auxiliary power unit with bi‐directional interaction capability

Tashakor

Arabsalmanabadi

Iraji

et al. 2020

IET Power Electronics

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“…Until now, several pulse width modulation (PWM) strategies have been utilized in a single-phase AC-DC converter such a bipolar (BPWM), unipolar (UPWM) [14,15], hybrid modulation (HPWM) [16], and hysteresis current control (HCC) [17]. In order to reduce power losses and electromagnetic interferences (EMI), soft switching modulation [18] and resonant rectifiers [19] have been presented that can include galvanic isolation [20].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of a Single-Phase Bidirectional Rectifier

Esteve,

Bellido,

Jordán

2024

Energies

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This article outlines the comprehensive design and control approach for a single-phase bidirectional rectifier (SPBR) used in bidirectional charging of electric vehicle batteries. The operational parameters of the inverter are determined through a thorough analysis of all switching sequences to accurately assess power losses, considering the type of switching device chosen in each case, enabling proper component sizing, and understanding converter efficiency. An exclusive electronic control circuit is examined, governing two converter operation modes: boost rectifier with power factor correction (PFC) and sine pulse inverter width modulation (SPWM) with a minimum number of adjustments made automatically. One problem that arises when addressing the design of an SPBR is determining the operating frequency. To address this issue, this study offers to conduct a comparative analysis of losses using various power devices and magnetic circuits to determine the optimal operating frequency for achieving maximum energy efficiency. To validate the design’s feasibility, a prototype with 10 kW output power was constructed, achieving a peak efficiency of approximately 97.5% in both directions, unity power factor (PF), and total harmonic distortion (THD) of less than 7% during full power operation.

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“…In order to increase the antijamming performance of DC/DC converter, many scholars have introduced the method of feedforward control into the traditional double closed-loop control [18][19][20][21], of which the reference value of current inner ring is able to quickly track the external disturbance to upgrade the dynamic response performance of the system. The feedforward can be divided into current feedforward and power feedforward [22] according to the different feedforward variables.…”

Section: Introductionmentioning

confidence: 99%

The Research on Bus Voltage Stabilization Control of Off‐Grid Photovoltaic DC Microgrid under Impact Load

Zhang

et al. 2019

Mathematical Problems in Engineering

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The solar power generation includes certain randomness and volatility, coupled with dynamic load involved in power fluctuations, which renders microgrid having certain unplanned instantaneous power during the process of real-time operation, so as to affect the stability of DC bus voltage. This paper, through constructing a model of off-grid photovoltaic DC microgrid under impact load characteristics, aiming at the fluctuate problems of the DC bus voltage caused by impact load, puts forward a fast response of hybrid energy-storing system composed of supercapacitors and batteries and superiors peak regulation capability to shave the peak and fill the valley of the microgrid. The researches on the strategy of double closed-loop voltage stabilization of blended energy storage system are made and the shortcomings of the double closed-loop voltage control of voltage and electricity are analyzed. And based on this, the tactics of new and double closed-loop voltage control of inner ring of power and the energy outer ring of DC bus capacitance are put forward and examined by simulation and experiment. The experiments prove that this method can more effectively suppress the influence of the fluctuations of impact load power on the DC bus voltage and further improves the system’s stability.

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A Novel Reduced Switching Loss Bidirectional AC/DC Converter PWM Strategy With Feedforward Control for Grid-Tied Microgrid Systems

Cited by 48 publications

References 26 publications

Power sharing strategy for multi‐source electrical auxiliary power unit with bi‐directional interaction capability

Power sharing strategy for multi‐source electrical auxiliary power unit with bi‐directional interaction capability

Optimal Design of a Single-Phase Bidirectional Rectifier

The Research on Bus Voltage Stabilization Control of Off‐Grid Photovoltaic DC Microgrid under Impact Load

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