Direct Output-Voltage Control of Nonminimum Phase Higher Order DC–DC Converters

Garza-Arias, Enrique; Mayo-Maldonado, Jonathan C.; Valdez-Reséndiz, Jesús E.; Escobar, G.; Rosas-Caro, Julio C.; Guillén, Daniel

doi:10.1109/tie.2022.3157984

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…Output voltage is then achieved by using voltage loop [34,35], achieving stability and better performance at the cost of additional circuitry and current sensors. Thus, some strategies are being researched to avoid this approach [36].…”

Section: Control Techniques For Power Convertersmentioning

confidence: 99%

“…The next step was computing alpha using (20), α = 0.1281, which represents the required phase contribution of 11.53°to reach the desired phase margin. Then, s α results as follows (36): Figure 8 shows the Bode plot of the biquadratic approximation of s α . The next step was to substitute (36) in the controller structure proposed by El-Khazali ( 26), obtaining the constants T i and K c with ( 27) and ( 28), respectively, and fine-tuning the parameters to obtain an implementable controller.…”

Section: Fopid Controller Design and Implementationmentioning

confidence: 99%

“…Then, s α results as follows (36): Figure 8 shows the Bode plot of the biquadratic approximation of s α . The next step was to substitute (36) in the controller structure proposed by El-Khazali ( 26), obtaining the constants T i and K c with ( 27) and ( 28), respectively, and fine-tuning the parameters to obtain an implementable controller. Then, extensive testing of the resulting controller in simulation was performed to ensure it achieved an acceptable response with the desired system.…”

Section: Fopid Controller Design and Implementationmentioning

confidence: 99%

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Fractional PID Controller for Voltage-Lift Converters

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et al. 2023

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Voltage-lift is a widely used technique in DC–DC converters to step-up output voltage levels. Several traditional and advanced control techniques applicable to power electronic converters (PEC) have been reported and utilized for voltage-lift applications. Similarly, in recent years the implementation of fractional-order controllers (FOC) in PEC applications has gained interest, aiming to improve system performance, and has been validated in basic converter topologies. Following this trend, this work presents an FOC for a voltage-lift converter, requiring only output voltage feedback. A third-order non-minimal phase system is selected for experimentation to verify FOC implementations for more complex PEC configurations. A simple, straightforward design and approximation methodology for the FOC is proposed. Step-by-step development of the FOC, numerical and practical results on a 50 W voltage-lift converter are reported. The results show that PEC transient and steady-state responses can be enhanced using FOC controllers when compared with classical linear controllers. Extended applications of FOC for improved performance in power conversion is also discussed.

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Section: Control Techniques For Power Convertersmentioning

confidence: 99%