A closed loop control of three phase dual-switch buck-boost converter

2018 ◽

Vol 9 (1) ◽

pp. 240

Author(s):

H.V.Gururaja Rao ◽

Karuna Mudliyar ◽

R.C. Mala

Keyword(s):

Solar Energy ◽

Closed Loop ◽

Boost Converter ◽

Closed Loop Control ◽

Phase Lag ◽

Small Signal ◽

Loop Control ◽

Boost Converters ◽

Three Phase ◽

Interleaved Boost Converter

<table width="593" border="1" cellspacing="0" cellpadding="0"><tbody><tr><td valign="top" width="387"><p>Renewable energy sources are increasingly being used today and solar energy is the most readily and abundantly available energy source. Boost converters are an integral part of any solar energy system. In order to obtain maximum possible energy from the solar system multi-phase interleaved boost converters are used. This paper presents the small-signal ac modelling and closed loop control of three-phase interleaved boost converter. State–space modelling methodology has been adopted to have linearized equivalent model of the boost converter. The interleaved three-phase boost converter is averaged over its one switching period and perturbed with small ac variations and finally linearized around its quiescent point to have a small signal ac model. Type III compensator is employed to improve the frequency response and closed loop control of three-phase boost converter. The controller design procedure is discussed in detail. The effect of right-half plane zero in non-minimum phase system and the appropriate pole-zero placements to overcome the maximum phase lag in such system is discussed. The compensated closed loop system is tested for load variations to observe the transient response.</p><p> </p></td></tr></tbody></table>

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Fuzzy Logic Controlled AC to AC Converter FED Three Phase P.M.S.M Drive

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b1068.078219 ◽

2019 ◽

Vol 8 (2) ◽

pp. 4945-4949

Keyword(s):

Fuzzy Logic ◽

Dynamic Response ◽

Closed Loop ◽

Boost Converter ◽

Closed Loop Control ◽

Voltage Gain ◽

Loop Control ◽

Voltage Output ◽

Three Phase ◽

Input Side

The study demonstrates the simulation of distinct strategies of control applicable for an AC-AC Boost-converter based on a p.m.s.mdrive for industrial automation and traction. A non varying voltage feeding a circuit of inverter with an implementation following a strategy of voltage based control, which takes into consideration of speed (mechanical) of the motor. This strategy is observed to control the voltage output of a converter on AC-DC.At the input side a boost converter is connect which incorporates an open as well as closed loop control. The controllers utilised for such conversion are PI and FLC. A VSIPMSM is modelled, simulated using a MAT Lab tool and the outcomes are compared to check the performance of both the controllers. Results predicts that there is an enhanced dynamic response in addition to an increased voltage gain for an FLC based Boost converter control rather than a PI based boost converter control..

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