Identification and analysis of operating modes of single-phase semi-converter fed battery charging circuits using extinction angle control scheme &amp;#x2014; A monograph

Karthigaivel, R.; Kumaresan, N.; Ammasaigounden, N.; Devi, G. Meena; Subbiah, M.

doi:10.1109/tencon.2009.5395952

Cited by 3 publications

(2 citation statements)

References 8 publications

(8 reference statements)

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“…In addition, the worst even harmonic magnitude is produced when the firing angle is around 90° [20]. Applications of this topology are for DC welding, electroplating, battery charging [21], and some DC drives [22].…”

Section: Even Harmonic Sourcesmentioning

confidence: 99%

Investigation of severity of voltage flicker caused by second harmonic

Goh

Radzi

Hizam

et al. 2017

IET Science, Measurement & Technology

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Second harmonic produces asymmetrical waveform which leads to fluctuation of root-meanssquare (rms) value with certain frequency. Meanwhile, function of weighting filter in flickermeter is designed for sixth-order low-pass filtering function with frequency to be limited to 35 Hz, signal with frequency ranging from 35 to 100 Hz, at certain gain, still can pass through. Since the second harmonic produces fluctuation of rms value with 50 Hz, there is high possibility that it can be passed by this filter and thus resulting in flicker detection. Therefore, this study points out a worthwhile research gap to justify that the presence of the second harmonic can directly increase severity of voltage flicker. In addition, further simulation work using semi-converter has been carried out, as one of main even harmonic sources, in order to justify the concept. To practically validate the concept, Fluke power analyser 435 series II and programmable alternative current source are utilised in the experimental setup. In the main finding, it is confirmed that severity of the voltage flicker increases directly with the presence of the second harmonic and it also formed a clear relationship between short-term perceptibility (Pst) and percentage of the second harmonic component.

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Section: Even Harmonic Sourcesmentioning

confidence: 99%

Investigation of severity of voltage flicker caused by second harmonic

Goh

Radzi

Hizam

et al. 2017

IET Science, Measurement & Technology

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“…Even in advanced text books and papers dealing with such topics, only one case of discontinuous current [5][6][7][8][9] has 978-1-4799-6805-3/15/$31.00 ©2015 IEEE been described. But, the present authors have earlier analysed the operation of single-phase semi-converters with various firing schemes, identified the various current patterns and derived expressions for the various performance quantities such as average dc voltage, total rms and fundamental rms components of ac supply current for each pattern called as a mode [10][11][12]. Such a rigorous analysis is now made for the three-phase semi-converters, activated with Phase Angle Control scheme (PAC) and supplying batteries.…”

Section: List Of Symbolsmentioning

confidence: 99%

Classification and analysis of operating modes of three-phase semi-converters feeding battery charging loads using Phase Angle Control scheme - A monograph

Karthigaivel

Kumaresan

Subbiah³

2015

2015 International Conference on Computer Communication and Informatics (ICCCI)

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The analysis of three-phase semi-converter circuits activated by Phase Angle Control (PAC) scheme and feeding battery charging loads has been described. It is shown that in one cycle of input ac voltage, there could be three different intervals with respect to the supply/load currents. The waveforms of the voltage and current at the input and output terminals of the converter circuit were simulated with various values of load parameters and converter firing angles. These waveforms revealed the existence of various modes of functioning of this system based on the nature of load current which may be continuous or discontinuous. Commencing from the loop equation of the circuit, the procedure for obtaining the expressions for the converter performance quantities has been illustrated for one of the modes as an example. A converter circuit with battery load was also set up in the laboratory and tested with the same parameters used for simulation, to demonstrate experimentally the various modes of functioning of the system. The simulated waveforms were found to agree with the experimental results and also with those obtained from the derived expressions.

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