Event-Triggered Model Predictive Control for Power Converters

Wang, Benfei; Huang, Jingjing; Chen, Wen; Rodríguez, José; Garcia, Cristian; Gooi, Hoay Beng; Zeng, Zheng

doi:10.1109/tie.2019.2962489

Cited by 62 publications

(15 citation statements)

References 8 publications

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“…According to (7), the system's damping ratio is ξ ¼ 0:56, and natural frequency is ω n = 8,074.2588 rad/s. Therefore, the transfer function of the 2nd-order system is simplified to (8), where k ¼ 200 is the desired DC gain. The 7th-order NEC-I-ZSC system has now been approximated as a 2nd-order system, making the design of the closed-loop compensator much easier and more practically applicable.…”

Section: Reduced-order Controller Design Methodsmentioning

confidence: 99%

“…Much has been achieved in research for the modeling of converters and the design of their compensators. 6,7 Researchers have proposed model predictive control (MPC) to improve the output features; e.g., an event-triggered model predictive control (MPC) method for power converters 8,9 and a dual-layer MPC method were proposed to mitigate the voltage fluctuations. 10,11 Besides, some scholars developed order-reduction methods to achieve simplified control designs for the ease of implementation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design and experimental verification of a simplified controller for high‐order converters

Zhang

Chen

2023

Circuit Theory & Apps

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The modeling of high-order converter systems and design of their closed-loop controllers are difficult due to their high nonlinearity, hence high-order systems, large number of zero-poles, and complex frequency-domain characteristics. To ease the design methodologies, this paper studies high-order power converters and proposes a modeling and control method for such converter systems with order reduction. As an example, the 7th-order non-electrolytic capacitor-I-Z-Source converter (NEC-I-ZSC) is employed to implement the proposed design method. Operational analysis and small signal modeling of the NEC-I-ZSC are conducted, and a reduced-order controller is then devised. Experimental verification is conducted, which prove the feasibility and effectiveness of the proposed design method.

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Section: Reduced-order Controller Design Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and experimental verification of a simplified controller for high‐order converters

Zhang

Chen

2023

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…Another possible way to address limited computing power is to resort to triggering, as in self-triggered [29] and event-triggered [30,31] optimization-based constrained control. However, there is no guarantee that sufficient computational power will be available when the triggering mechanism invokes simultaneously multiple controllers.…”

Section: Prior Work On Optimization-based Constrained Control Ofmentioning

confidence: 99%

ROTEC: Robust to Early Termination Command Governor for Systems with Limited Computing Capacity

Hosseinzadeh¹,

Sinopoli²,

Kolmanovsky³

et al. 2022

Preprint

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A Command Governor (CG) is an optimization-based add-on scheme to a nominal closed-loop system. It is used to enforce state and control constraints by modifying reference commands. This paper considers the implementation of a CG on embedded processors that have limited computing resources and must execute multiple control and diagnostics functions; consequently, the time available for CG computations is limited and may vary over time. To address this issue, a robust to early termination command governor is developed which embeds the solution of a CG problem into the internal states of a virtual continuous-time dynamical system which runs in parallel to the process. This virtual system is built so that its trajectory converges to the optimal solution (with a tunable convergence rate), and provides a sub-optimal but feasible solution whenever its evolution is terminated. This allows the designer to implement a CG strategy with a small sampling period (and consequently with a minimum degradation in its performance), while maintaining its constraint-handling capabilities. Simulations are carried out to assess the effectiveness of the developed scheme in satisfying performance requirements and real-time schedulability conditions for a practical vehicle rollover example.

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“…Eventtriggered control is an optimization strategy that can effectively reduce redundant operations [21,22]. Static event-triggered model predictive control (SETMPC) is a control algorithm combining event-triggered control with MPC only when the DC voltage difference is detected in real-time to determine whether the system meets the event-triggered condition [23]. The model predictive calculation will be carried out only when the system meets the trigger condition.…”

Section: Energy Strorage Modulementioning

confidence: 99%

Dynamic event‐triggered model predictive control of Vienna rectifiers in DC charging system

Zhang

Huang

et al. 2022

IET Power Electronics

Self Cite

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Here, a dynamic event‐triggered model predictive control (DETMPC) of Vienna rectifiers in the DC charging system is proposed to solve the excessive calculation burden of the conventional MPC method while maintaining the system performance. The status of the system is constantly updated, and the next model predictive control calculation is performed only when the system state meets the event‐triggered condition. Otherwise, the original switch state signal is maintained, which can greatly reduce the computational burden. A dynamic variable is introduced into the trigger condition to holdover the steady‐state performance as the system state changes. An experimental comparative analysis is carried out to verify the correctness and effectiveness of the proposed DETMPC method. The results demonstrate that the proposed method can effectively reduce calculation burden and switching loss while maintaining satisfactory system performance at the same time.

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Event-Triggered Model Predictive Control for Power Converters

Cited by 62 publications

References 8 publications

Design and experimental verification of a simplified controller for high‐order converters

Design and experimental verification of a simplified controller for high‐order converters

ROTEC: Robust to Early Termination Command Governor for Systems with Limited Computing Capacity

Dynamic event‐triggered model predictive control of Vienna rectifiers in DC charging system

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