Shunt Active Filter for Multi-Level Inverters Using DDSRF with State Delay Controller

C. R. Rajesh; S. P. Umayal

Shunt Active Filter for Multi-Level Inverters Using DDSRF with State Delay Controller

C. R. Rajesh

S. P. Umayal

Vol. 18, No. 3, pp. 863-870, May 2018

10.6113/JPE.2018.18.3.863

Cascaded multi-level inverter

Decoupled double synchronous reference frame

Instantaneous PQ theory

Positive

Negative and zero sequence components

Shunt active filter

State delay controller

PDF Full-Text

Abstract

The traditional power control theories for the harmonic reduction methods in multilevel inverters are found to be unreliable under unbalanced load conditions. The unreliability in harmonic mitigation is caused by voltage fluctuations, non-linear loads, the use of power switches, etc. In general, the harmonics are reduced by filters. However, such devices are an expensive way to provide a smooth and fast response to secure power systems during dynamic conditions. Hence, the Decoupled Double Synchronous Reference Frame (DDSRF) theory combined with a State Delay Controller (SDC) is proposed to achieve a harmonic reduction in power systems. The DDSRF produces a sinusoidal harmonic that is the opposite of the load harmonic. Then, it injects this harmonic into power systems, which reduces the effect of harmonics. The SDC is used to reduce the delay between the compensation time for power injection and the generation of a reference signal. The proposed technique has been simulated using MATLAB and its reliability has been verified experimentally under unbalanced conditions.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

C. R. Rajesh and S. P. Umayal, "Shunt Active Filter for Multi-Level Inverters Using DDSRF with State Delay Controller," Journal of Power Electronics, vol. 18, no. 3, pp. 863-870, 2018. DOI: 10.6113/JPE.2018.18.3.863.

[ACM Style]

C. R. Rajesh and S. P. Umayal. 2018. Shunt Active Filter for Multi-Level Inverters Using DDSRF with State Delay Controller. Journal of Power Electronics, 18, 3, (2018), 863-870. DOI: 10.6113/JPE.2018.18.3.863.