A new frequency control method to enhance fault ride-through capability of VSC-HVDC systems supplying industrial plants

Changizian, Mahmudreza; Mizani, Amirreza; Shoulaie, Abbas

doi:10.1016/j.epsr.2022.108843

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…For instance, PWM rectifiers for motor drives were investigated when semiconductor technology advanced in terms of capabilities [6]. Also, alongside the use of a PWM rectifier, other capabilities related to power quality were explored such as voltage sag ride through [7], harmonic compensation [3], power factor compensation [8], and even fault-tolerant operation [9].…”

Section: Introductionmentioning

confidence: 99%

“…where (7) corresponds to the LCL filter with its control signal v ab as shown in Figure 4 (II), and (8) represents the DC bus voltage dynamics, illustrated in Figure 4 (III).…”

mentioning

confidence: 99%

“…The closed-loop wide band w ncl is proposed as w ncl = Mw c,virt < w sw , where M is a positive real number. Note that, in Figure 8, the closed-loop root locus of the fourth order is produced by applying the proposed controller of (10) to the reduced third-order linear model of (7). Proposing M = 2.5 and using the Ackerman formula for calculating the controller gains, the results obtained are: k 1 = −1.129, k 2 = −3.574, k 3 = 0.092, and k i = 26295.…”

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confidence: 99%

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A Polynomial Synthesis Approach to Design and Control an LCL-Filter-Based PWM Rectifier with Extended Functions Validated by SIL Simulations

Viera Díaz,

Nuñez,

Visairo Cruz

et al. 2023

Energies

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Controlling a PWM rectifier can be challenging due to the bilinear nature of its averaged model. This paper introduces the use of the Butterworth approach to design and control an LCL-filter-based PWM rectifier with power quality functions. By leveraging the linear part of the system, this approach reduces the number of variables involved in the control scheme. The rectifier is designed and controlled in a concatenated manner to ensure proper performance even during demanding power-quality events. The uniqueness of this approach lies in the fact that a fourth-order model can be regulated by using solely three-state variables and linear techniques founded on Butterworth polynomial synthesis. This approach differs from previous methods in that it does not employ nonlinear controllers, dq transformations, or double control loops. Hence, this divergent approach contributes to the simplification of power converter design and control through the application of the same polynomial synthesis, besides enhancing system operation in demanding scenarios. Extensive SIL simulations of a 1 kW, 220 Vrms PWM rectifier using the OPAL-RT-1400 platform were conducted to demonstrate the feasibility of the proposed controller. The selected tests reveal the validity of this proposal even when the PWM rectifier faces multiple power quality events simultaneously.

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Section: Introductionmentioning

confidence: 99%

“…where (7) corresponds to the LCL filter with its control signal v ab as shown in Figure 4 (II), and (8) represents the DC bus voltage dynamics, illustrated in Figure 4 (III).…”

mentioning

confidence: 99%

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confidence: 99%

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