Multi-objective Voltage Quality Disturbance Generator with Cascade H-bridges

Shan, Renzhong; Xiao, Xiangning; Liu, Qiao

doi:10.1109/appeec.2010.5449296

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Previous invasive measuring methods include the approaches based on non-linear loads (e.g. thyristorcontrolled circuits [20], switching capacitor banks [21], and diode rectification loads [22]) and inverter-based methods [23][24][25]. Table 1 shows that non-linear load-based methods are not very expensive as some existing components, such as the reactivecompensation capacitor banks along the lines, can be adopted for measurement tasks.…”

Section: Introductionmentioning

confidence: 99%

Resonant frequency identification based on harmonic injection measuring method for traction power supply systems

Liu

Wang

Zhang

et al. 2018

IET Power Electronics

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Accidents related with high-order harmonic resonance seriously threaten the safety and stable operation of traction power supply systems (TPSSs). Generally, the resonant frequency of a TPSS, which is the crucial information for resonance suppression, cannot be accurately obtained through model-based methods due to the TPSS complexity. This study proposes a direct measuring method that harmonic currents at different frequencies and amplitudes are injected into the TPSS by a harmonic generator (HG). Then, the resonant frequency can be identified by measuring the harmonic response. The HG based on a single-phase cascaded H-bridge converter and its control algorithms are developed. Both simulations on a railway system model and experimental results on an equivalent resonant circuit are carried out to validate the feasibility and effectiveness of the proposed method.

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Section: Introductionmentioning

confidence: 99%

Resonant frequency identification based on harmonic injection measuring method for traction power supply systems

Liu

Wang

Zhang

et al. 2018

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…This DG can generate sag, swell, and outage but it has limitations in getting flexible output voltage values due the limited and constant-value secondary outputs. A voltage quality DG composed of a pulse width modulation (PWM) rectifier and cascaded H-bridge inverter was proposed in [10], where a voltage sag, voltage swell, and harmonic generator were also introduced. In [11], Yang et al proposed a current quality DG.…”

Section: Introductionmentioning

confidence: 99%