Current Trends in dc: Voltage-Source Converters

Kirby, N. M.

doi:10.1109/mpe.2019.2897406

Cited by 9 publications

(2 citation statements)

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“…Voltage source inverters (VSIs) are widely used in industry and in households, in uninterruptible and backup power supply systems, decentralized electricity generation, intelligent drives and many other areas [1][2][3][4]. Typically, these circuits use two main modes of operation: single-polar square-wave rectangular pulses (Square-Wave Operation) and pulse packets within the output voltage period (Unipolar or Bipolar PWM Operation).…”

Section: Introductionmentioning

confidence: 99%

New Method for Analysis and Design Consideration of Voltage Source Inverters

Hinov

2022

Energies

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This manuscript proposes a new unified approach for the analysis of voltage source inverters that summarizes and unifies the operating modes of a whole class of inverters powered by a voltage source: resonant, aperiodic and voltage source inverters. The study was performed on a full-bridge circuit of a series RLC inverter with reverse diodes, operating in aperiodic mode. Based on the community of processes in the power circuits, the expressions for the current through the load and the voltage of the capacitor in condensed form with their initial phases are determined. These basic ratios are presented in a normalized form according to the control frequency, thus summarizing the operation of the inverters with a control frequency below and above the quasi-resonant. A methodology for designing a voltage source inverter was developed, considered as a special case of a series RLC inverter with inverse diodes when operating in aperiodic mode and super-quasi-resonant frequency. The reliability of the obtained results was verified by comparison with the use of the classical methodology for design and computer simulations. The presented approach is useful from a methodological point of view, as it allows us, with a unified approach and through general mathematical expressions, to describe and study the processes in a significant part of DC/AC converters.

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Section: Introductionmentioning

confidence: 99%

New Method for Analysis and Design Consideration of Voltage Source Inverters

Hinov

2022

Energies

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“…Numerical results derived from a study case of a point‐to‐point (PtP)‐VSC‐HVDC link and its expansion to a multi‐terminal (MT)‐VSC‐HVDC system, are executed to demonstrate the effectiveness of the proposed analytical method. This VSC‐HVDC expansion has been already envisaged in a preliminary study by the authors reported in [18], and the feasibility of creating a bifurcation in the DC link has also been reported as a realistically achievable option in [19]. The remainder of the paper is organised as follows: Section 2 presents and describes the power system to be considered for the DDBM formulation and VSC's control modes commonly used by a VSC unit.…”

Section: Introductionmentioning

confidence: 99%

Directional derivative‐based method for quasi‐stationary voltage support analysis of single‐infeed VSC‐HVDC units

et al. 2020

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This study presents an investigation of the impact of the quasi‐stationary voltage support provided by a voltage source converter (VSC) connected to a single point of a power system. Based on the directional derivative concept, an analytical method is developed to quantify the sensitivities of the AC bus voltage with respect to the VSC reactive power control modes. Based on a real case study, it is shown that the method applies to VSC units that are part of VSC‐HVDC systems, which can operate in a point‐to‐point or multi‐terminal configuration. Time‐domain simulations are performed to verify the findings from the application of the analytical method on a reduced size power system.

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