The Effect of Transformer Leakage Inductance on the Steady State Performance of Push-pull based Converter with Continuous Current

Chen, Qian; Zheng, Trillion Q.; Li, Yan; Shao, Tiancong

doi:10.6113/jpe.2013.13.3.349

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…That means the controller will be unstable when G vd has right half plane (RHP) zeroes, for example, boost and Superboost [16]. Hence this method is suitable for the converter whose transfer function G vd has no RHP zeroes, for example, Superbuck [17][18][19], HE-Boost and Weinberg [20,21].…”

Section: Active Damping Controller For a Voltage-source Convertermentioning

confidence: 99%

Active damping method to reduce the output impedance of the DC–DC converters

Jia

Zheng

2015

IET Power Electronics

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In the cascaded power system, instability may occur because of the impedance interaction. The system can be stabilised by passive damping or control methods to reduce the output impedance of the source converter and improve the damping characteristics. This study focuses on the source converter in the cascaded system and presents a new active damping control to reduce the output impedance of the converter by a proper active damping controller. The method to compute the corresponding active damping controller is proposed in this study. By the application of the active damping method, a virtual resistor in parallel with the output of the converter's small signal model can be realised. Therefore the output impedance can be reduced. Because the virtual resistor exists only in the small signal model, the steady-state operating point is not affected and the value of the virtual resistor can be changed. The experiment results of a Buck converter with the active damping controller under different conditions are proposed to verify the effectiveness of the active damping control. Besides, an active damping controller is applied to an unstable cascaded system in simulation to stabilise the cascaded system so the effectiveness of this method is also verified.

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Section: Active Damping Controller For a Voltage-source Convertermentioning

confidence: 99%

Active damping method to reduce the output impedance of the DC–DC converters

Jia

Zheng

2015

IET Power Electronics

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“…The use of T1M may be a good starting point for the preliminary design of the converter and its control loops, but often leads to considerable discrepancies with actual behavior. This is mainly due to the strong influence of the converter's non-idealities with respect to its operating conditions, power and switching frequency [18].…”

Section: Introductionmentioning

confidence: 99%

Generalized, Complete and Accurate Modeling of Non-Ideal Push–Pull Converters for Power System Analysis and Control

Vivas,

Segura,

Andújar

2023

Applied Sciences

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Power converters are a basic element for the control and design of any power electronic system. Among the many available topologies, the push–pull converter is widely used due to its versatility, safety and efficiency. For its correct analysis, sizing, simulation and control, models that meet the characteristics of generality, accuracy and simplicity are required, especially if its control is to be optimized by means of some analytical technique. This requires models that consider the practical non-idealities intrinsic to the converter, as well as being intuitive and easy to handle analytically in a control loop. In general, the models reviewed in the scientific literature adopt simplifications in their definition that are detrimental to their accuracy. In response to the posed problem, this work presents a generalized, complete, accurate and versatile model of real (non-ideal) push–pull converters, ideal for the analysis, simulation, and control of power systems. Following the premise of general and complete converters, the proposed model includes all the practical non-idealities of the converter elements, and it is accurate because it faithfully reflects its dynamics. Furthermore, the model is versatile, as its state space formulation allows for its easy adaptability to the converter operating conditions (voltage, current and temperature) for each sampling time. Also, the model is excellent for use in model-based control techniques, as well as for making very accurate simulators. The behavior of the developed model has been contrasted with a real push–pull converter, as well as with reference models present in the scientific literature for both dynamic and steady-state response tests. The results show excellent performance in all the studied cases, with behavior faithful to the real converter and with relative errors that are much lower than those obtained for the reference models. It follows that the model behaves like a digital twin of a real push–pull converter.

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“…Ejea-Marti J. established a small signal model based on peak current control and analyzed stability under a small duty cycle [4]- [6]. Chen analyzed the effect of leakage inductance on the steady-state performance of NIWC [7]. However, the small signal model and controller design of parallel NIWC systems have not been analyzed to date.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of an Avionic Battery Discharge Regulator

Chen¹,

Yu²,

Huang³

et al. 2016

Journal of Power Electronics

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The avionic battery discharge regulator (BDR) plays an important role in a power-conditioning unit. With its merits of high efficiency, stable transfer function, and continuous input and output currents, the non-isolated Weinberg converter (NIWC) is suitable for avionic BDR. An improved peak current control strategy is proposed to achieve high current-sharing accuracy. Current and voltage regulators are designed based on a small signal model of a three-module NIWC system. The system with the designed regulators operates stably under any condition and achieves excellent transient response and current-sharing accuracy.

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The Effect of Transformer Leakage Inductance on the Steady State Performance of Push-pull based Converter with Continuous Current

Cited by 7 publications

References 8 publications

Active damping method to reduce the output impedance of the DC–DC converters

Active damping method to reduce the output impedance of the DC–DC converters

Generalized, Complete and Accurate Modeling of Non-Ideal Push–Pull Converters for Power System Analysis and Control

Modeling and Analysis of an Avionic Battery Discharge Regulator

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