Sensor Count Reduction for Single-Phase Converters With an Active Power Buffer Using Algebraic Observers

Yuan, Huawei; Li, Sinan; Tan, Siew‐Chong; Hui, S. Y. Ron

doi:10.1109/tie.2020.3037993

Cited by 8 publications

(2 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the robustness of the control loop to transient disturbance and variation in LC values may be further improved by considering several nonlinear control methods in [38] which proposes an APD‐derived non‐linear control framework for the PPB by the way of state feedback linearization, which is extended further in [39] to introduce a Lyapunov‐based (LP) calculation for enhanced robustness, these methods applied to the PPB alone would cause a control computation time to exceed 2 µs. Similarly, the addition of an algebraic observer as proposed in [37] to remove the need for a Cb voltage sensor which additionally utilizes LP‐APD control laws and computations in [40] would further increase the control execution time. Therefore, due to the timing constraints of the digital control system imposed by the 100 kHz switching frequency, the proposed framework is an excellent choice as performance metrics are met.…”

Section: Comparison Between the Ppb Topologiesmentioning

confidence: 99%

A comparative analysis of power pulsating buffer architectures for mitigating high‐frequency and low‐frequency ripple in PV microinverter applications

Dutta,

Reece,

Mallik

2023

IET Power Electronics

View full text Add to dashboard Cite

This study provides a comparative analysis of feasible architectures of Power Pulsating Buffer (PPB) as an actively controlled energy storage solution alternative to the electrolytic capacitors in a single‐stage isolated, single‐phase 120 V AC 60Hz grid‐connected photovoltaic (PV) microinverter for a 400 W rated system with 20–40 V input range. The comparison encompasses key factors including energy density, volume reduction, efficiency, frequency operation, and system stability. The findings shed light on the primary advantages and disadvantages of the buck‐ and boost‐derived PPB under study. The results indicate that the boost PPB exhibits enhanced stability, a more compact design, and higher power efficiency compared to the buck PPB. However, for low switching frequency operations, the buck PPB proves to be more effective in mitigating DC port voltage ripple and ensuring controller over microinverter load variation.

show abstract

Section: Comparison Between the Ppb Topologiesmentioning

confidence: 99%

A comparative analysis of power pulsating buffer architectures for mitigating high‐frequency and low‐frequency ripple in PV microinverter applications

Dutta,

Reece,

Mallik

2023

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…According to (3), the input power can be divided into two parts, which are constant power Po and the double line frequency power pCbus(t). Also, the output voltage vo(t) of the AC-DC converter can be divided into two parts, which are the constant output voltage Vo and the ripple voltage vo,ac(t) [24]:…”

Section: Power Flow In Ac-dc Convertermentioning

confidence: 99%

Active Capacitors With Ripple Cancellation Control for AC-DC Converter Applications

Yang

Chen

et al. 2021

IEEE Access

View full text Add to dashboard Cite

Based on the derived mathematical equations, a novel Ripple Cancellation Control (RCC) method for the active capacitor is proposed. The proposed RCC method is simple and can be easily realized by using analog circuits. Also, it can be applied to active capacitors implemented by different circuit topologies. Besides, a new approach for developing the mathematical model of the active capacitors implemented by different circuit topologies are also proposed. The energy storage capability and the impedance analysis by using the developed mathematical model are presented to verify the performance of the active capacitors with the proposed RCC method. Computer simulations and the hardware results are presented to validate the accuracy of the mathematical model as well as the performance of the proposed RCC method.

show abstract

Reduced sensor Lyapunov‐based control for active power decoupling circuit

Liu,

Yuan,

et al. 2024

Circuit Theory & Apps

View full text Add to dashboard Cite

SummaryThe double‐line frequency ripple power exists inherently in single‐phase power converters. To address this problem, active power decoupling (APD) technique is widely used. It diverts the ripple power into a small energy storage element by introducing passive and active power devices. This inevitably involves more voltage and current sensors for corresponding control, which raises the cost while decreasing reliability and power density. In this paper, a Lyapunov‐based methodology is proposed to achieve APD control without adding any sensor. According to the designed controller laws, the practical decoupling capacitor voltage will converge to its reference. The decoupling voltage reference is given by taking into account buffering the double‐line frequency ripple power. Afterward, the robustness against parameter perturbations of the proposed method is discussed. Finally, the experimental results verify the feasibility of the proposed control strategy.

show abstract

Sensor Count Reduction for Single-Phase Converters With an Active Power Buffer Using Algebraic Observers

Cited by 8 publications

References 22 publications

A comparative analysis of power pulsating buffer architectures for mitigating high‐frequency and low‐frequency ripple in PV microinverter applications

A comparative analysis of power pulsating buffer architectures for mitigating high‐frequency and low‐frequency ripple in PV microinverter applications

Active Capacitors With Ripple Cancellation Control for AC-DC Converter Applications

Reduced sensor Lyapunov‐based control for active power decoupling circuit

Contact Info

Product

Resources

About