The Experts below are selected from a list of 182250 Experts worldwide ranked by ideXlab platform
Marian K. Kazimierczuk - One of the best experts on this subject based on the ideXlab platform.
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duty cycle and input to output voltage transfer functions of tapped inductor buck dc dc converter
International Symposium on Circuits and Systems, 2018Co-Authors: Dalvir K Saini, Ankit Chadha, Agasthya Ayachit, Alberto Reatti, Marian K. KazimierczukAbstract:This paper presents a small-signal analysis of the Power Stage of a tapped-inductor pulse-width modulated (PWM) buck dc-dc converter, operating in continuous-conduction mode (CCM). Using the circuit averaging technique, the small-signal model of the Power Stage is developed. The derivation of duty cycle-to-output voltage and input-to-output voltage transfer functions are presented. An example tapped inductor buck dc-dc converter is considered. The time-domain and frequency-domain characteristics of the converter are analyzed, illustrated, and discussed. The theoretical results are validated using circuit simulations.
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small signal modeling of open loop pwm z source converter by circuit averaging technique
IEEE Transactions on Power Electronics, 2013Co-Authors: Marian K. KazimierczukAbstract:This paper presents the ac small-signal modeling of the Power Stage of pulsewidth-modulated Z-source converter in continuous conduction mode by the circuit-averaging technique. The small-signal models used to derive the open-loop Power-Stage input voltage-to-capacitor voltage, input voltage-to-inductor current, control-to-capacitor voltage, and control-to-inductor current transfer functions are derived. Open-loop Power-Stage transfer functions corresponding to the capacitor voltage loop and inductor current loop are derived. The transfer functions derived take into account the equivalent series resistances of the inductors and capacitors. Experimental validation of the derived small-signal models is presented for a laboratory prototype. The theoretical predictions are in good agreement with the experimental results.
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comparison of wide and high frequency duty ratio to inductor current transfer functions of dc dc pwm buck converter in ccm
IEEE Transactions on Industrial Electronics, 2012Co-Authors: N. Kondrath, Marian K. KazimierczukAbstract:Wide- (WF) and high-frequency (HF) small-signal models are presented for pulsewidth-modulated dc-dc buck converter Power Stage. An exact duty-ratio-to-inductor-current transfer function is derived using the WF model and compared to an approximate transfer function derived using the HF model for the buck converter Power Stage in continuous conduction mode. The theoretical results are validated using experimental results.
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control to output and duty ratio to inductor current transfer functions of peak current mode controlled dc dc pwm buck converter in ccm
International Symposium on Circuits and Systems, 2010Co-Authors: N. Kondrath, Marian K. KazimierczukAbstract:The control-to-output and the duty ratio-to-inductor current transfer functions of peak current-mode controlled PWM dc-dc buck converter in CCM are derived and illustrated. The closed inner-current loop and the Power Stage inductor current-to-output voltage transfer functions are used to derive the control-to-output transfer function of the peak current-mode controlled buck converter in CCM, which is essential for the outer-voltage loop controller design. A small-signal model including parasitic components and delay is used to derive the Power Stage transfer function, necessary for proper analysis of the Power Stage. The loop gain of the inner-current loop is derived and is shown that it is independent of converter topology.
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Voltage-Loop Power-Stage Transfer Functions With MOSFET Delay for Boost PWM Converter Operating in CCM
IEEE Transactions on Industrial Electronics, 2007Co-Authors: B Bryant, Marian K. KazimierczukAbstract:Open-loop transfer functions can be used to create closed-loop models of pulsewidth-modulated (PWM) converters. The closed-loop small-signal model can be used to design a controller for the switching converter with well-known linear control theory. The dynamics of the Power Stage for boost PWM dc-dc converter operating in continuous-conduction mode (CCM) are studied. The transfer functions from output current to output voltage, from duty cycle to output voltage including MOSFET delay, and from input voltage to output voltage are derived. The derivations are performed using an averaged linear circuit small-signal model of the boost converter for CCM. Experimental Bode plots and step responses were used to test the accuracy of the derived transfer functions. The theoretical and experimental responses were in excellent agreement, confirming the validity of the derived transfer functions
J.b. Vieira - One of the best experts on this subject based on the ideXlab platform.
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A high Power factor ballast with a single switch and a single Power Stage
Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition 2004. APEC '04., 1Co-Authors: Aniel Silva De Morais, C.a. Gallo, Fernando Lessa Tofoli, E.a.a. Coelho, L.c. Freitas, Valdeir J. Farias, J.b. VieiraAbstract:This paper presents a high Power factor electronic ballast used in fluorescent lamps with a single Power Stage and a single-switch. This topology has been obtained by combining the boost topologies and a new inverter topology with coupled inductors. The use of a single active switch allows a reduction in the number of components used in the control and Power circuits. The equations used in the proposed reactor design and also in the choice of the semiconductor devices have been presented. A prototype with switching frequency equal to 50 kHz has been built to startup 40 W fluorescent lamps.
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A high Power factor electronic ballast with a single switch and single Power Stage
Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition 2003. APEC '03., 1Co-Authors: J.a. Vilela, E.a.a. Coelho, L.c. Freitas, Valdeir J. Farias, J.b. Vieira, A.r. VazAbstract:This paper presents a high Power factor electronic ballast used to operate fluorescent lamps with a single Power Stage and single-switch. This topology has been obtained by combination of Buck-Boost converter and a new inverter topology with coupled inductors. The use of a single active switch allows a reduction in the number of components used in control and Power circuits. The equations used in the proposed reactor design and also in the choice of the semiconductor devices have been presented. A prototype with switching frequency equal to 50 kHz has been built to startup 40 W fluorescent lamps.
R.m. Bass - One of the best experts on this subject based on the ideXlab platform.
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Simultaneous design of Power Stage and controller for switching Power supplies
IEEE Transactions on Power Electronics, 1997Co-Authors: C. Gezgin, B.s. Heck, R.m. BassAbstract:This paper develops a method for simultaneously designing the Power Stage and controller for a switching Power supply. The method utilizes a numerical optimization procedure, which facilitates computer-aided design. It is found that better performance can be achieved than with a traditional two-step design process, where the Power Stage and controller are designed sequentially. Optimization and simulation results for a buck Power converter are presented to illustrate the design process and benefits.
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Integrated design of Power Stage and controller for switching Power supplies
5th IEEE Workshop on Computers in Power Electronics, 1Co-Authors: C. Gezgin, B.s. Heck, R.m. BassAbstract:This paper develops a method for simultaneously designing the Power Stage and controller for a switching Power supply. The method utilizes a numerical optimization procedure which facilitates computer-aided design. It is found that better performance can be achieved than with a traditional two-step design process where the Power Stage and controller are designed sequentially. Optimization and simulation results for a buck Power converter are presented to illustrate the design process and benefits.
E.a.a. Coelho - One of the best experts on this subject based on the ideXlab platform.
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A high Power factor ballast with a single switch and a single Power Stage
Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition 2004. APEC '04., 1Co-Authors: Aniel Silva De Morais, C.a. Gallo, Fernando Lessa Tofoli, E.a.a. Coelho, L.c. Freitas, Valdeir J. Farias, J.b. VieiraAbstract:This paper presents a high Power factor electronic ballast used in fluorescent lamps with a single Power Stage and a single-switch. This topology has been obtained by combining the boost topologies and a new inverter topology with coupled inductors. The use of a single active switch allows a reduction in the number of components used in the control and Power circuits. The equations used in the proposed reactor design and also in the choice of the semiconductor devices have been presented. A prototype with switching frequency equal to 50 kHz has been built to startup 40 W fluorescent lamps.
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A high Power factor electronic ballast with a single switch and single Power Stage
Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition 2003. APEC '03., 1Co-Authors: J.a. Vilela, E.a.a. Coelho, L.c. Freitas, Valdeir J. Farias, J.b. Vieira, A.r. VazAbstract:This paper presents a high Power factor electronic ballast used to operate fluorescent lamps with a single Power Stage and single-switch. This topology has been obtained by combination of Buck-Boost converter and a new inverter topology with coupled inductors. The use of a single active switch allows a reduction in the number of components used in control and Power circuits. The equations used in the proposed reactor design and also in the choice of the semiconductor devices have been presented. A prototype with switching frequency equal to 50 kHz has been built to startup 40 W fluorescent lamps.
L.c. Freitas - One of the best experts on this subject based on the ideXlab platform.
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A high Power factor ballast with a single switch and a single Power Stage
Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition 2004. APEC '04., 1Co-Authors: Aniel Silva De Morais, C.a. Gallo, Fernando Lessa Tofoli, E.a.a. Coelho, L.c. Freitas, Valdeir J. Farias, J.b. VieiraAbstract:This paper presents a high Power factor electronic ballast used in fluorescent lamps with a single Power Stage and a single-switch. This topology has been obtained by combining the boost topologies and a new inverter topology with coupled inductors. The use of a single active switch allows a reduction in the number of components used in the control and Power circuits. The equations used in the proposed reactor design and also in the choice of the semiconductor devices have been presented. A prototype with switching frequency equal to 50 kHz has been built to startup 40 W fluorescent lamps.
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A high Power factor electronic ballast with a single switch and single Power Stage
Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition 2003. APEC '03., 1Co-Authors: J.a. Vilela, E.a.a. Coelho, L.c. Freitas, Valdeir J. Farias, J.b. Vieira, A.r. VazAbstract:This paper presents a high Power factor electronic ballast used to operate fluorescent lamps with a single Power Stage and single-switch. This topology has been obtained by combination of Buck-Boost converter and a new inverter topology with coupled inductors. The use of a single active switch allows a reduction in the number of components used in control and Power circuits. The equations used in the proposed reactor design and also in the choice of the semiconductor devices have been presented. A prototype with switching frequency equal to 50 kHz has been built to startup 40 W fluorescent lamps.
