Control of DC bus voltage with a Modular Multilevel Converter

Samimi, Shabab; Gruson, François; Guillaud, Xavier; Delarue, Philippe

doi:10.1109/ptc.2015.7232570

Cited by 18 publications

(10 citation statements)

References 6 publications

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“…In this section a control structure, equivalent to the control of the AAM described in [11], is presented for the simplified MMC model. As in the two-level VSC, a control strategy based on two cascaded loops (namely inner and outer loops) is proposed.…”

Section: E MMC Controlmentioning

confidence: 99%

“…The latter can be a constant value as considered in [3] (upper position of the switch in Fig. 5) or it can be associated with the square of the DC voltage v 2 dc as discussed in [11] (lower position of the same switch). The latter allows sharing the MMC stored energy with the DC bus.…”

Section: E MMC Controlmentioning

confidence: 99%

“…The latter allows sharing the MMC stored energy with the DC bus. Finally, it is common to add an AC power compensation P ac as well as a filter on the MMC energy signal before introducing it into the control [11].…”

Section: E MMC Controlmentioning

confidence: 99%

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On the modeling of MMC for use in large scale dynamic simulations

Freytes

Papangelis²,

Saad³

et al. 2016

2016 Power Systems Computation Conference (PSCC)

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Abstract-This paper focuses on simplified models of the Modular Multilevel Converter suitable for large-scale dynamic studies, in particular simulations under the phasor approximation. Compared to the existing literature, this paper does not a priori adopt the modeling approach followed for the original twolevel or three-level Voltage Source Converter. On the contrary, a model is derived following a physical analysis that preserves its average internal dynamic behavior. An equivalent control structure is proposed and various alternatives are highlighted. The proposed model with its controllers has been implemented in a phasor simulation software and its response has been validated against a detailed Electromagnetic Transient model. Finally, an illustrative example is presented with the application of the proposed model on a large grid consisting of AC areas interconnected with a multi-terminal DC grid.

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Section: E MMC Controlmentioning

confidence: 99%

Section: E MMC Controlmentioning

confidence: 99%

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On the modeling of MMC for use in large scale dynamic simulations

Freytes

Papangelis²,

Saad³

et al. 2016

2016 Power Systems Computation Conference (PSCC)

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“…In [19], it has been demonstrated that can be controlled by the dc component of the differential current and by the ac component of the differential current. All the different loops are represented in Fig.…”

Section: Energy-based Model Of the MMCmentioning

confidence: 99%

“…Equation (19) shows that the equivalent capacitor for the regulation of the DC bus now integrates the capacitors of MMC, which induces a high increase for the capacitor value. For example, in this case study the value of the MMC capacitors (6C tot ) is 24 times the value of a 70-km DC cable capacitor.…”

Section: ) Two Different Ways For the DC Voltage Controlmentioning

confidence: 99%

MMC Stored Energy Participation to the DC Bus Voltage Control in an HVDC Link

Samimi

Gruson

Delarue

et al. 2016

IEEE Trans. Power Delivery

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The Modular multilevel converter (MMC) is becoming a promising converter technology for HVDC transmission systems. Contrary to the conventional two or three level VSC-HVDC links, no capacitors are connected directly on the DC bus in an MMC-HVDC link. Therefore, in such an HVDC link the DC bus voltage may be much more volatile than in a conventional VSC-HVDC link. The intention of this paper is to propose a connection between the DC bus voltage level and the stored energy inside the MMC in order to greatly improve the dynamic behavior in case of transient. EMT simulation results illustrate this interesting property on an HVDC link study case.

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