Design of Mechatronic Systems Assignment Sample

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Introduction

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Any kind of AC Voltage Controller is made up of 2 SCRS that are coupled in anti-parallel. Because generated voltage is regulated throughout both half-cycles, one is positive as well as another one is negative, this is referred to as a “single-phase full wave voltage controller” or this is also known as unidirectional voltage regulator (Fan and Miao, 2018). The figure 1 represents a standard circuit diagram of a full wave AC voltage controllerhaving a load R in its terminal which has been drawn in the PSpice software.

In the time of the +ve half-cycle of such I/p Signal, the anode part of the first thyristor T1 seems to be more positive than the cathode (Lee, 2018). T1 is triggered at ωt = α, & after that the resistive load is immediately coupled towards the source (load poweras well as the supply powerwould be similar).

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That is, V0 = V

Throughαto ? that meansat ωt= ?, Whenever the supplied power is increased, a spontaneous inversion of the power supply arises along the very 1st thyristor T1, as well as commutation occurs at ωt = π.

Whenever the anode part of the 2nd transistors T2 is much higher than that of the cathode part in the time of the -ve half-cycle of the supplied AC i/p Signal, T2 is triggered at ωt = (π + α), hence T2 transmits through (π + α)to 2?. The supplies reduce to zero at ωt= 2? (Renoet al. 2021). As a result, spontaneous commutation of T2 occurs at ωt= 2?.

The gating networks for the first thyristor T1 as well as the second thyristor T2 within the Figure 1 should be segregated (Hannanet al. 2019). The first thyristor T1 along with the 2nd thyristor T2 triggering angles are fixed 180° away, when there are no restrictions upon that ranges of triggering angle α. The operating range may be adjusted between 0 to ?, as well as the rms o/p power could be adjusted between V to 0 (Kimet al. 2018). Figure 3 depicts the wavelengths for the i/p power, o/p power, as well as gathering signals for both of the thyristor.

The output voltage of the AC voltage controller is illustrated as

Vm1{2π-α+Sin2α2}

The power factor of the circuit can be calculated by PF = V rms * I rms * cos α

Or, PF = V rms * I rms[for α = 0]

Depending upon the input power supply the RMS value of the harmonics is represented as

E = V rms (ωt)

References

Journals

Fan, L. and Miao, Z., 2018. Wind in weak grids: 4 hz or 30 hzoscillations?. IEEE Transactions on Power Systems, 33(5), pp.5803-5804.

Hannan, M.A., Ghani, Z.A., Hoque, M.M., Ker, P.J., Hussain, A. and Mohamed, A., 2019. Fuzzy logic inverter controller in photovoltaic applications: Issues and recommendations. IEEE Access, 7, pp.24934-24955.

Kim, J., Han, S., Cho, W., Cho, Y. and Koh, H., 2018. Design and analysis of a repetitive current controller for a single-phase bridgeless SEPIC PFC converter. Energies, 12(1), p.131.

Lee, S.S., 2018. A single-phase single-source 7-level inverter with triple voltage boosting gain. IEEE Access, 6, pp.30005-30011.

Reno, M.J., Brahma, S., Bidram, A. and Ropp, M.E., 2021. Influence of Inverter-Based Resources on Microgrid Protection: Part 1: Microgrids in Radial Distribution Systems. IEEE Power and Energy Magazine, 19(3), pp.36-46.

Vanti, S., Bana, P.R. and Amin, M., 2021, October. Single-stage PV System With Multi-Objective Predictive Control Approach. In IECON 2021–47th Annual Conference of the IEEE Industrial Electronics Society (pp. 1-6). IEEE.