A Virtual Phase-Lead Impedance Stability Control Strategy for the Maritime VSC–HVDC System

Wu, Wenhua; Chen, Yandong; Zhou, Leming; Zhou, Xiaoping; Yang, Ling; Dong, Yanting; Xie, Ze‐Ming; Luo, An

doi:10.1109/tii.2018.2804670

Cited by 54 publications

(27 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To increase the maximum transmission power, the DC side oscillation must be suppressed. The suppression methods of DC side oscillation can be classified into passive methods [20,21] and active methods [22][23][24][25][26][27][28][29]. Passive methods suppress resonance by introducing a passive damper branch into the circuit to remodel the impedance of the source converter or load converter in a cascaded system.…”

Section: Introductionmentioning

confidence: 99%

“…Active methods suppress resonance by introducing voltage and current feedback control in a controller to improve the impedance of the source converter or load converter. Virtual impedance is widely used in control systems as an active damping control method [24][25][26][27][28][29]. It can be introduced to suppress DC-side oscillation [24,25], to limit output current for voltage controlled inverters during overloads or faults [26,27], to improve the stability of a grid-connected inverter by change its input admittance [28], and to enhance the small-signal stability of a modular multilevel converter (MMC) based DC grid [29].…”

Section: Introductionmentioning

confidence: 99%

“…Virtual impedance in the DC voltage control loop can suppress the DC-side oscillation of a VSC-HVDC transmission system and improve its stability margin and the transmission capacity of the system [24,25]. However, virtual impedance control leads to steady-state errors in the DC output voltage of DC-voltage-controlled converters, due to different operating points [25].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Virtual Impedance Control Strategy for Improving the Stability and Dynamic Performance of VSC–HVDC Operation in Bidirectional Power Flow Mode

Liu

Liao

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

It is a common practice that one converter controls DC voltage and the other controls power in two-terminal voltage source converter (VSC)-based high voltage DC (HVDC) systems for AC gird interconnection. The maximum transmission power from a DC-voltage-controlled converter to a power-controlled converter is less than that of the opposite transmission direction. In order to increase the transmission power from a DC-voltage-controlled converter to a power-controlled converter, an improved virtual impedance control strategy is proposed in this paper. Based on the proposed control strategy, the DC impedance model of the VSC-HVDC system is built, including the output impedance of two converters and DC cable impedance. The stability of the system with an improved virtual impedance control is analyzed in Nyquist stability criterion. The proposed control strategy can improve the transmission capacity of the system by changing the DC output impedance of the DC voltage-controlled converter. The effectiveness of the proposed control strategy is verified by simulation. The simulation results show that the proposed control strategy has better dynamic performance than traditional control strategies.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Virtual Impedance Control Strategy for Improving the Stability and Dynamic Performance of VSC–HVDC Operation in Bidirectional Power Flow Mode

Liu

Liao

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…[3][4][5][6] However, the voltage withstand level of power electronic switching devices and the accuracy of harmonic compensation limit the application of conventional active power filters in medium/high voltage distribution systems. Since the MMC was proposed in 2002, it has been widespread applied in HVDC, [11][12][13][14][15] as well as in FACT system for its modularity and scalability. Compared with coupling transformer-based APF, the application of multilevel technologies reduces the size and losses of devices significantly.…”

Section: Introductionmentioning

confidence: 99%

“…Due to these drawbacks, the application of the three main topologies is constrained. Since the MMC was proposed in 2002, it has been widespread applied in HVDC, [11][12][13][14][15] as well as in FACT system for its modularity and scalability. [16][17][18][19] At present, the research on MMC mainly involves the modulation algorithm, 18 circulating current suppression, 19 and control under unbalanced conditions, and few articles study the application in APF, 20 especially the control strategy under non-ideal situation in this aspect.…”

Section: Introductionmentioning

confidence: 99%

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

Wang

Cheng

2019

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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.

show abstract

Autonomous transient power management strategy based on improved droop control for DC microgrid

Pokharel

Sapkota

et al. 2022

Electr Eng

View full text Add to dashboard Cite

A Virtual Phase-Lead Impedance Stability Control Strategy for the Maritime VSC–HVDC System

Cited by 54 publications

References 38 publications

A Virtual Impedance Control Strategy for Improving the Stability and Dynamic Performance of VSC–HVDC Operation in Bidirectional Power Flow Mode

A Virtual Impedance Control Strategy for Improving the Stability and Dynamic Performance of VSC–HVDC Operation in Bidirectional Power Flow Mode

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

Autonomous transient power management strategy based on improved droop control for DC microgrid

Contact Info

Product

Resources

About