A Scheme to Improve Power Factor and Dynamic Response Performance for CRM/DCM Buck–Buck/Boost PFC Converter

Yao, Kai; Wu, Chengjian; Chen, Jienan; Yang, Jian; Li, Jiazhen; Jin, Zhiqiang; Wang, Sheng; Yang, Rundong; Liu, Le; Gao, Yang; Wang, Zesong

doi:10.1109/tpel.2020.3007613

Cited by 21 publications

(10 citation statements)

References 18 publications

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“…Adaptive power control models that incorporate fixed on-time ratio control (FOTRC) and fixed duty-cycle ratio control (FDCRC) [23], Feedback Controller via Interconnection and Damping Assignment Control (FC IDAC) [24], Sinusoidal Pulse Width Modulation with Pulse Energy Modulation (SPWM PEM) [25], and use of External Fast Recovery Diodes (EFRD) [26] are proposed by researchers. These models assist in improving efficiency of buck-boost continuous operational modes via dynamic control of switching states, which maintains better power levels even under power disturbances.…”

Section: Literature Reviewmentioning

confidence: 99%

Design of an adaptive power controller for improving THD performance of integrated-parallel buck-boost converter via efficient reverse power routing

Mutta

Goswami

2023

Eng. Res. Express

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Parallel buck-boost converters are high-output DC-to-DC converters. It is increased by inverting the voltage and decreasing the circuit current capacity. The duty cycle of switching transistors governs converter voltage. Output current moderates THD in these converters. Additional current losses cause output voltage and current harmonics. Inductors, capacitors, MOSFETs, and other power control filtering models reduce excessive current and THD. Complex models lose scalability and stability. Real-time buck-boost controllers can't use them. Filtered adaptive power controller blocks reduce buck-boost converter response time and inject improper frequency components at the output. A reverse power routing model with an adaptive power controller is proposed to estimate excessive output power and improve converter performance. Reverse power control lowers THD by 20% and increases power throughput. When output power drops, the adaptive power controller (APC) changes ON/OFF duty cycles. The proposed model reduced THD and maintained high output voltage and current in both continuous and discontinuous modes. Context-aware circuit design measured output ripples, harmonics, smoothness factor, and power loss. The proposed parallel buck-boost converter had 10% lower jitters, 23% better harmonic outputs, 15% better smoothness, and 5% lower total power loss than others. The model handles high-density electrical loads with maximum power throughput.

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Section: Literature Reviewmentioning

confidence: 99%

Design of an adaptive power controller for improving THD performance of integrated-parallel buck-boost converter via efficient reverse power routing

Mutta

Goswami

2023

Eng. Res. Express

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“…In steady-state operation, the total change in inductor current must be zero in a period as shown with (9).…”

Section: Preliminariesmentioning

confidence: 99%

Machine Learning-Based Buck-Boost Converter Design for Traction Power Centers in Rail Systems

AKÇAY

2023

Preprint

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Since the traction power energy consumption is at high levels in Rail Systems, the design of the traction power center and minimizing the losses and increasing the system efficiency are important issues. While different designs are used while creating the traction power electrification system, the basic principle is to effectively transfer energy from one point to another. The power transmission system from vehicles to vehicles, from vehicle to traction center or from vehicle to another consumption center develops depending on the developments in power electronics technology, and the efficiency of the system changes according to different topological structures. While the developments in converter, inverter, semiconductor element and control technology constitute important inputs for system performance, it is necessary to create design conditions in harmony with the rail system operation for efficiency. In this study, machine learning-based Buck-Boost Converter circuit design was carried out with real data measurements performed in the field for the power supply system located in the traction centers. With the proposed topology, the efficiency of the power supply system has been increased, gains of the system are compared with the situation where different control methods are used, and the results are presented comparatively.

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“…, ω G = α120π (29) denoting the multiplication of tuned and un-tuned notch term gains, respectively. Plots of f (α) versus 0.99 ≤ α ≤ 1.01 (signifying 1% mains frequency uncertainty) are depicted in Figure 4 for different values of ξ f .…”

Section: Total Harmonic Distortionmentioning

confidence: 99%

“…Many solutions aiming to improve the trade-off have been suggested. Utilizing line voltage and/or load current feedforward to compensate against parameter variations does not increase the DC voltage loop bandwidth, yet it requires additional sensors [27][28][29][30]. The ripple estimation and cancellation techniques proposed in [31][32][33][34][35][36] indicated an improved performance, yet requiring a relatively complex circuitry and a significantly increased computational burden.…”

Section: Introductionmentioning

confidence: 99%

Design of Dual-Notch-Filter-Based Controllers for Enhancing the Dynamic Response of Universal Single-Phase Grid-Connected Power Converters

Borafker,

Strajnikov,

Kuperman

2023

Applied Sciences

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Trade-off between transient response and grid-side current quality is a well-known issue of single-phase mains-connected power converters. A dual-loop control structure (usually based on PI or type-II controllers) is typically employed in such systems to regulate the DC link voltage to a constant reference (in order to maintain power balance) while forcing the grid-side current to have a specific shape (in order to comply with power quality requirements). Introducing notch term/s (tuned to certain multiple/s of the mains base frequency) into one of the loops allows either for the improvement of the dynamic performance without worsening the total harmonic distortion of grid-side current or for the enhancement of the current quality without impairing the dynamic response. Since the maximum tolerable value of total harmonic distortion is typically imposed by a certain power quality standard, it is desirable to enhance the transient response of the power converter system as much as possible while keeping the total harmonic distortion at the maximum allowed value. However, universal off-grid operating power conversion systems must support both 50 Hz and 60 Hz mains; consequently, tuning the notch term/s to 50 Hz multiple/s would not be sufficient for a 60 Hz mains operation and vice-versa. Consequently, this work examines the possibility of introducing a dual-notch term into the control loop in order to cover both above-mentioned base frequencies. It is demonstrated that under typical base frequency uncertainty values, the performances of dual-notch terms are nearly decoupled so that the term tuned to a 50 Hz frequency (and optionally to its multiples) has nearly no influence at a 60 Hz mains operation and vice-versa. Consequently, the methodology allows for the improvement of the dynamics of universal grid-connected power converters without total harmonic distortion (THD) deterioration. A stability analysis of the proposed control structure is carried out and quantitative design guidelines, allowing for the attainment of an optimized dynamic response for a given maximum tolerable total harmonic distortion, minimum allowed phase margin and a certain base frequency uncertainty, are established. It is shown that a DC link voltage loop bandwidth of 52 Hz may be attained while keeping the grid-side current THD below 5%. Simulations and experimental results support well the proposed design methodology.

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A Scheme to Improve Power Factor and Dynamic Response Performance for CRM/DCM Buck–Buck/Boost PFC Converter

Cited by 21 publications

References 18 publications

Design of an adaptive power controller for improving THD performance of integrated-parallel buck-boost converter via efficient reverse power routing

Design of an adaptive power controller for improving THD performance of integrated-parallel buck-boost converter via efficient reverse power routing

Machine Learning-Based Buck-Boost Converter Design for Traction Power Centers in Rail Systems

Design of Dual-Notch-Filter-Based Controllers for Enhancing the Dynamic Response of Universal Single-Phase Grid-Connected Power Converters

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