Fault-Tolerant Self-Tuning Control for Three-Phase Three-Level T-Type Rectifier

Sharida, Ali; Bayhan, Sertaç; Abu‐Rub, Haitham

doi:10.1109/tpel.2023.3254649

Cited by 14 publications

(7 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the constants ∂ 0 , ∂ 1 , and ∂ 2 can be estimated using many estimation methods including linear regression, lease squares, and recursive least square (RLS) method. RLS has the advantages of higher accuracy and stability [27], so, RLS is adopted. Therefore, (17) can be written in the general form of RLS by splitting the known and the unknown values…”

Section: Current Reference Signal Estimationmentioning

confidence: 99%

See 1 more Smart Citation

Adaptive Fault-Tolerant Communication Based-Control for Parallel Connected Rectifiers

Sharida,

Kamal,

Bayhan

et al. 2023

IEEE Open J. Ind. Electron. Soc.

Self Cite

View full text Add to dashboard Cite

This article proposes an adaptive and fault-tolerant communication method for controlling parallel-connected active front-end rectifiers (AFRs). The proposed method relies on the principle of masterslave communication based on the controller area network bus protocol. The master unit is responsible for generating current reference signal and for sharing it with the slaves, while the slave units are solely responsible for generating the power based on the received reference set points. The master can be selected and changed automatically based on a negotiation algorithm among the connected rectifiers. Then, if a communication fault occurs in the master, another master is chosen by the slaves. On the other hand, slaves' communication faults are tolerated by switching to communication-less mode of operation with online estimation of the current reference signal instead of receiving it over the communication network. The proposed algorithms are validated by simulation and experimentally on a prototype with three parallel AFRs. Adaptive communication, communication-based control, communication fault tolerant control, master-slave communication. there are major disadvantages associated with it, namely reliability, complexity, and communication delay. In master-slave communication, a fault in the master DG would lead to a failure in the entire system due to the central point of failure. Moreover, a communication fault in any slave will put the slave out of service even if it is healthy in terms of hardware. To solve the aforementioned problems, Peng et al. [10] proposed a self-triggered control method for dc microgrids. The method overcomes the problems of data dropouts and communication delays; however, it cannot deal with communication faults. INDEX TERMSAnother data driven model-based method was proposed in [11] to enable communication delay tolerant in centralized microgrid control schemes. This method also does not solve the communication faults. A hybrid control method was proposed in [12] to perform communication fault tolerant control. The load sharing was done by droop control, while the voltage regulation is done based on a CAN-bus communication network. However, this method depends on both communication and droop to perform fault tolerant control, which increases the complexity of the system. Additionally, the problems associated with the droop control appear in the response during the communication faults. A droop control method based on virtual frequency was proposed in [13] to perform some communication faults tolerant control. However, this method leads to disconnect the converter from the grid when a serious communication problem occurs.Master-slave based-control was employed extensively for the power sharing problem. The master rectifier computes the required reference current for voltage regulation and transmits it to other rectifiers as a set point of reference current. Therefore, the master (or multiple masters) rectifier operates as a voltage regulator, while other rectifiers work as current regul...

show abstract

Section: Current Reference Signal Estimationmentioning

confidence: 99%

“…This requirement complements other objectives such as dc link voltage regulation and grid-side current control. Many solutions have been proposed in the literature to achieve the control objectives [20], [21]. A sliding mode control (SMC) was proposed to achieve these objectives for three-phase three-level T-type rectifier [22].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Fault-Tolerant Communication Based-Control for Parallel Connected Rectifiers

Sharida,

Kamal,

Bayhan

et al. 2023

IEEE Open J. Ind. Electron. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

“…2, each converter is connected directly to HVDC link, and through a three-phase L-filter (Li) to the AC grid. The dynamic model of the AC side of each converter can be represented as follows [17], [23]…”

Section: A System Descriptionmentioning

confidence: 99%

“…To eliminate the coupling effects between paralleled converters and overcome the challenges, a novel communication-less coupling-effect observer is proposed [25]. The proposed observer depends on comparing the discretized mathematical model and the actual measurements.…”

Section: Coupling Effects Observermentioning

confidence: 99%

“…Numerous advanced control algorithms were proposed in the literature to enhance the response of the AFRs such as sliding mode control (SMC) [13], passivity based control (PBC) [14], model predictive control (MPC) [15], H∞ [16], disturbance-rejection control (DRC) [17], self-tunning control (STC) [18], and others [19]. However, all these methods are required to implement symmetrical control techniques for all converters.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancing Scalability of Fast Electric Vehicle Charging Stations: Solutions for AC–DC Side Integration and Regulation

Sharida,

Bayhan,

Abu-Rub

2023

IEEE Open J. Ind. Electron. Soc.

Self Cite

View full text Add to dashboard Cite

This paper introduces a set of innovative solutions designed to enhance the scalability of AC-DC side operations in fast electric vehicle (EV) charging stations. The proposed solutions focus on streamlining and regulating the connection process for integrating a new active front end rectifier (AFR) with existing AFRs at the high voltage DC link (HVDC) side, without requiring detailed knowledge of their specifications, such as control algorithms, switching frequencies, topologies, and modulation techniques. Neglecting these specifications can result in significant adverse effects, particularly on grid currents within the AC-DC side of the charging station. Conversely, these specifications have minimal impact on the DC-DC side. Therefore, this paper primarily concentrates on addressing the scalability challenges associated with the AC-DC side of fast EV charging stations. Experimental analysis is conducted to assess the consequences of underestimating any specification, followed by the proposal of a general solution to compensate for or reduce each effect. The proposed methods effectively address the critical demand for scalability in fast EV chargers. Furthermore, these techniques are implemented using low-cost microcontrollers and validated experimentally through the utilization of three parallel connected AFRs.

show abstract