Essay regarding Modeling of Closed-Loop Voltage-Mode Controlled Interleaved Dual Enhance Converter

Computers and Electrical Anatomist 29 (2003) 67–84

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Modeling of closed-loop voltage-mode controlled

interleaved dual improve converter

Mummadi Veerachary, Tomonobu Senjyu 5., Katsumi Uezato

Department of Electrical and Electronics Engineering, Faculty of Engineering, College or university of the Ryukyus, 1 Senbaru, Nishihara-cho, Nakagami, Okinawa 903-0213, Japan

Received 24 July 2000; accepted 9 January 2001

Summary

An extensive small-signal analysis of the voltage-mode manipulated interleaved dual boost (IDB) converter with continuous current mode based upon signal flow graph procedure is recommended. Small-signal flow graph is definitely developed, from where open-loop small-signal transfer functions are made using popular Mason's gain formula. Closed-loop small-signal input-to-output, control-to-output copy functions are derived and frequency response characteristics are determined for different responsibility ratios. Voltage-mode compensator designed using K-factor approach is utilized for closed-loop operation of IDB converter. Load volt quality regulation against supply volts and load disorders are demonstrated through trial and error results.

Ó 2002 Elsevier Science Ltd. All legal rights reserved.

Keywords: Interleaved dual boost converter; Small-signal examination; K-factor; Voltage-mode control

1 . Introduction

PULSE WIDTH MODULATION boost dc–dc converters are some of the simplest electricity electronic circuits. They are widely used in regulated power items and also in specialized large power applications such as power motor pushes, battery rechargers, plating and welding [1, 2]. However , the typical boost converters have the drawbacks of high ripple content at the source and load current waveforms, possibility of stepping into discontinuous current mode for low transitioning frequencies, tons etc . To overcome some of these problems, dc–dc converters are usually paralleled to lower the ripple content, improve the power digesting capability and availability of the energy *

Matching author. Tel.: +81-98-895-8686; Fax: +81-98-895-8708. E-mail address: [email protected] u-ryukyu. alternating current. jp (T. Senjyu).

0045-7906/02/$ - observe front subject Ó 2002 Elsevier Research Ltd. Most rights set aside. PII: H 0 0 4 5 - 7 9 zero 6 ( 0 1 ) zero 0 zero 1 5 - a few

68

Meters. Veerachary ou al. / Computers and Electrical Architectural 29 (2003) 67–84

Nomenclature

C

filter capacitance

m ðtÞ, d1 ðtÞ typical values in the switching features K1, K2 D, D1 on time of switch S1; S2

DP 1, DP 2 diodes of person boost skin cells

GON, GOFF ON, AWAY sub-circuit signal flow graphs

is, i0 input, fill current

i1, i2 individual boost skin cells inductor currents

ic, irgi current through filter capacitor, load resistance

K1, K2 switching features

L1, L2 inductances of individual improve cells

volt quality gain in the converter

Mv

R

load resistance

R1, R2 inductor series immunities

Ra, Rb feedback network resistances

S1, S2 buttons of person boost cells

Vg, V0 input, load voltage

V1, V2 ac electricity across inductor branches

electronic system. In the development of fresh paralleling processes for dc–dc conversion, interleaved electrical power conversion [3, 4] comprises one of the most guaranteeing alternatives as a result of following advantages: (i) ripple cancellation at the input and output waveforms to maximum level (ii) lower value of ripple extravagance, high ripple frequency in the resulting output and input waveforms (iii) efficiency of the parallel connected converter program can be superior if a correct number of conversion programs in the system are turned on. Further, seite an seite connection of converters has many desirable properties such as decreased device challenges, fault patience for the system, flexibility inside the system design etc . This converter program may be exposed to disturbances like source, insert and program parameter different versions etc . To enhance the energetic performance of the converter program, closed-loop control is essential. In this paper, a simple...

References: Tomonobu Senjyu was developed in Fable prefecture, Asia, on May a couple of, 1963. This individual received the B. S. and M. S. degrees

in electric powered engineering coming from University with the Ryukyus, Okinawa, Japan, in year 1986 and 1988, respectively, and

Katsumi Uezato was born in Okinawa prefecture, Japan, in February five, 1940. This individual received the B. H. degree

in electrical executive from the School of the Ryukyus, Okinawa, The japanese, in 1963, the Meters. S



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