Passivity-Based Control Strategy for SMES Under an Unbalanced Voltage Condition

Lei, Yong; Lin, Xiaohui; Zhu, Yingwei

doi:10.1109/access.2018.2831251

Cited by 25 publications

(11 citation statements)

References 28 publications

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“…[22][23][24] In the literature, 25 predictive harmonics control is used to the control of MMC-based APF, which can solve some problems to some extent. Some practical examples of passivity-based control can be obtained in previous studies, [30][31][32][33][34] which prove the effectiveness of this nonlinear control method based on the energy function. Moreover, this literature neglects the circulation current control, which is essential to the MMC-based system.…”

Section: Introductionmentioning

confidence: 89%

“…However, the compensated total harmonic distortion (THD) is not ideal because of a more complex system but a control strategy according to the simplified mathematical model. Some practical examples of passivity-based control can be obtained in previous studies, [30][31][32][33][34] which prove the effectiveness of this nonlinear control method based on the energy function. In the literature, 31 by utilizing of the PBC technique, a stable operating region for the DG-interfaced converter can be defined and maximum active power is injected from the DG source to the power grid.…”

Section: Introductionmentioning

confidence: 89%

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Passivity‐based control of MMC‐based active power filter under non‐ideal conditions

Wang

Cheng

2019

Int Trans Electr Energ Syst

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Summary To improve the voltage withstand level and maintain a high effective switching frequency of conventional active power filter, modular multilevel converter (MMC) with a high number of voltage levels is employed in shunt active power filter recent years, but few articles study this topology from the control strategy applicable to various non‐ideal states. This paper proposes a passivity‐based control (PBC) scheme for MMC‐based shunt active power filter (MMC‐SAPF) with independent positive‐ and negative‐sequence components, and the proper control laws have been defined based on the PBC method, which can also be applied to the non‐ideal state. The passivity of MMC‐SAPF and stability analysis are proved, and damping injection idea is used to design corresponding controllers with high dynamic performance. Besides, the overall control scheme is also based on circulation current suppressing controllers, submodule capacitor voltage controllers, and a harmonics detection section that can choose compensation signals flexibly according to the capacity of active power filter and is applicable in non‐ideal states, as well as ideal state, which can improve the comprehensive performance of this system. By comparing PBC with traditional PI control under ideal state and various non‐ideal operating states, the effectiveness and superiority of proposed strategy were validated by simulation and downscaled experiments.

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 89%

Passivity‐based control of MMC‐based active power filter under non‐ideal conditions

Wang

Cheng

2019

Int Trans Electr Energ Syst

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“…various schemes such as static var-compensation (SVC) [35], the static reactive power compensator (STATCOM) [36], and the power balance theory (PBT). A passivity based control (PBC) is mentioned as a suitable control strategy for an unbalanced voltage condition [37]. Techniques like the synchronous reference frame (SRF) theory and the instantaneous reactive power theory (IRPT) [38] [39] [40] are the most renowned techniques for the voltage regulation.…”

Section: Many Control Algorithms Have Been Reported For the Voltage Rmentioning

confidence: 99%

Virtual Synchronous Generator Based Current Synchronous Detection Scheme for a Virtual Inertia Emulation in SmartGrids

Parwal¹,

Fregelius²,

Silva³

et al. 2019

EPE

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Renewable energy sources, such as photovoltaic wind turbines, and wave power converters, use power converters to connect to the grid which causes a loss in rotational inertia. The attempt to meet the increasing energy demand means that the interest for the integration of renewable energy sources in the existing power system is growing, but such integration poses challenges to the operating stability. Power converters play a major role in the evolution of power system towards SmartGrids, by regulating as virtual synchronous generators. The concept of virtual synchronous generators requires an energy storage system with power converters to emulate virtual inertia similar to the dynamics of traditional synchronous generators. In this paper, a dynamic droop control for the estimation of fundamental reference sources is implemented in the control loop of the converter, including active and reactive power components acting as a mechanical input to the virtual synchronous generator and the virtual excitation controller. An inertia coefficient and a droop coefficient are implemented in the control loop. The proposed controller uses a current synchronous detection scheme to emulate a virtual inertia from the virtual synchronous generators. In this study, a wave energy converter as the power source is used and a power management of virtual synchronous generators to control the frequency deviation and the terminal voltage is implemented. The dynamic control scheme based on a current synchronous detection scheme is presented in detail with a power management control. Finally, we carried out numerical simulations and verified the scheme through the experimental results in a microgrid structure.

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“…The Hamiltonian function represents, commonly, the physical system energy and can be regarded as the Lyapunov function. Given these advantages, the PBC method has recently attracted considerable attention in the field of electrical engineering [14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the classical IDA-PBC method is proposed in [14][15][16] to ensure the regulation of inverters, it is illustrated that this method achieves satisfactory regulation performances. More specifically, PWM converter with LCL-filter [17] and multi paralleled VSCs with LCL filters [18], shunt active power filter [19] and type 2 STATCOM systems [20], AC/DC converters [21], distributed generation sources which are integrated to the power grid [22], the superconductor magnetic energy storage (SMES) [23], the mechanical systems [24] and electrical energy storage systems [25]. Although the PBC method has been successfully applied to the power electronics.…”

Section: Introductionmentioning

confidence: 99%

Passivity-Based Control for Movable Multi-Load Inductively Coupled Power Transfer System Based on PCHD Model

2020

IEEE Access

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A passivity-based control strategy for movable multi-load inductively coupled power transfer (ICPT) system based on PCHD (Port-Controlled Hamiltonian Dissipation, PCHD) model is proposed, which can effectively suppress mutual inductance and load interference. During the movement of the secondary coil of the movable multi-load ICPT system, due to the change of mutual inductance and the randomness of the multi-load, it will cause the transmission power and efficiency to oscillate and generate harmonics. Firstly, in view of the above problems, this paper analyzes the ICPT system under movable multiple loads. The DQ transformation method was used to establish the large-signal mathematical model of the system, and PCHD mathematical model in the DQ domain was established to decouple the active and reactive power. Secondly, the passivity-based controller (PBC) is designed by using the principle of interconnection and damping assignment passivity-based control (IDA-PBC). After that, the second method of Lyapunov function is used for stability analysis, and further verifies the asymptotic stability of the closed-loop system. Finally, the proposed method was verified by MATLAB/Simulink simulation. The simulation results show that the passivity-based controller has stronger robustness in both steady and movable states compared with the PI controller, which effectively suppresses the oscillation and total harmonic distortion caused by the change of mutual inductances and the randomness of the loads.

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Passivity-Based Control Strategy for SMES Under an Unbalanced Voltage Condition

Cited by 25 publications

References 28 publications

Passivity‐based control of MMC‐based active power filter under non‐ideal conditions

Passivity‐based control of MMC‐based active power filter under non‐ideal conditions

Virtual Synchronous Generator Based Current Synchronous Detection Scheme for a Virtual Inertia Emulation in SmartGrids

Passivity-Based Control for Movable Multi-Load Inductively Coupled Power Transfer System Based on PCHD Model

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