2017
DOI: 10.1109/tpwrd.2016.2554620
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Arm Current Control Strategy for MMC-HVDC Under Unbalanced Conditions

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Cited by 74 publications
(47 citation statements)
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“…Since the analysis and control of MMCs is currently being widely studied in the scientific community, several different methods have been proposed for controlling the circulating currents when operating under unbalanced grid voltage conditions [14]- [16], [18]- [20], [22]- [25]. However, many of the these proposed control strategies rely on a Circulating Current Suppression Controller (CCSC) and/or other control loops implemented in a synchronously rotating reference frame.…”
Section: Context and Contributionsmentioning
confidence: 99%
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“…Since the analysis and control of MMCs is currently being widely studied in the scientific community, several different methods have been proposed for controlling the circulating currents when operating under unbalanced grid voltage conditions [14]- [16], [18]- [20], [22]- [25]. However, many of the these proposed control strategies rely on a Circulating Current Suppression Controller (CCSC) and/or other control loops implemented in a synchronously rotating reference frame.…”
Section: Context and Contributionsmentioning
confidence: 99%
“…For instance, the grid synchronization mechanism based on the DSOGI-QSG is inherently frequency-adaptive, and can be extended to include harmonic sequence decomposition, as proposed in [7]. Similarly, strategies for limiting the power flow and current references resulting from (25) can be introduced to ensure safe operation of the converter during severe ac-side grid faults, as discussed in [5], [9], [39].…”
Section: B Ac-side Current Reference Calculation and Controlmentioning
confidence: 99%
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“…Dynamic representation of MMC can be expressed by the following second‐order state‐space model by substituting into and as introduced in Liang et al dxdt=Ax+Bu+d, where x and u denote the output state vector and input vector, respectively. d denotes the disturbance vector, and A and B are coefficient matrices.…”
Section: Circuit Topology and Modellingmentioning
confidence: 99%
“…Arm current control enables to control both terminal voltages and currents for DC and AC side of MMC. Arm current control scheme based on a decoupler and proportional integral controller with vector proportional integral controller is presented in Liang et al under unbalanced conditions. The circulating currents can be suppressed, and AC‐side current can be controlled through suggested control method.…”
Section: Control Conceptmentioning
confidence: 99%