Bunlaksananusorn, Chanin

Preferred name

Alternative Name

Bunlaksananusorn, C.

Main Affiliation

School of Engineering

chanin.bu@kmitl.ac.th

Now showing 1 - 10 of 12

Some of the metrics are blocked by your
consent settings
Feedback compensation design for switched mode power supplies with a Right-Half-Plane (RHP) zero
(2004-12-01)
Kittipeerachon, K.
;
Bunlaksananusorn, C.
A boost and flyback converters operating in Continuous Conduction Mode (CCM) are notorious for their difficult control loop stabilisation and sluggish response. This paper describes feedback compensation design of these converters. Design of the two selected compensation circuits is illustrated with a CCM boost converter, with experimental results given to verify effectiveness of each compensation circuit. © 2004 KMITL. Thailand.
Some of the metrics are blocked by your
consent settings
Novel Current Feedforward Average Current Mode Control technique to improve output dynamic performance of DC-DC converters
(2007-12-01)
Chrin, P.
;
Bunlaksananusorn, C.
This paper proposes a novel Current Feedforward Average Current Mode Control (CFACMC) technique to improve output dynamic performance of DC-DC converters. In this new control scheme, besides its usual role as a feedback variable to a current controller, the sensed inductor current is fed forward, through a low-pass filter circuit, to sum with an output signal from a voltage controller to form the control signal. In the paper, the operating principle of CFACMC and its small signal model are described. From the small-signal model, the expression for selecting the gain of the low-pass filter to yield the improved output voltage response is derived. Both simulated and experimental results are provided to show that significant improvement in output dynamic response is achieved with CFACMC. © 2007 IEEE.
Some of the metrics are blocked by your
consent settings
Modeling and control design of a current-mode controlled flyback converter with optocoupler feedback
(2005-12-01)
Kleebchampee, W.
;
Bunlaksananusorn, C.
In this paper, modeling and control design of a current-mode controlled flyback converter with optocoupler feedback is presented. Small-signal models of the converter operating in Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) are derived and used in control design of the prototype converters, with the results confirmed by experiment. © 2005 IEEE.
Some of the metrics are blocked by your
consent settings
Feedback control design of Zero-Voltage-Switched Quasi-Resonant dc-dc converters
(2008-10-06)
Eaksuwan, Sira
;
Bunlaksananusorn, Chanin
In this paper, feedback control design of Zero-Voltage-Switched Quasi-Resonant dc-dc converters is presented. The power stage model is derived by a method of circuit averaging, while the control stage model, consisting of an Error Amplifier (EA) and Voltage Control Oscillator (VCO), determined by the input/output relationship of the circuits. The obtained models are used in feedback control design of the prototyped converter. Test results show that the converter exhibits good output voltage regulation and fast transient response to a step-load change. © 2008 IEEE.
Some of the metrics are blocked by your
consent settings
Modeling of a SEPIC converter operating in continuous conduction mode
(2009-10-22)
Eng, Vuthchhay
;
Pinsopon, Unnat
;
Bunlaksananusorn, Chanin
A SEPIC (Single-Ended Primary Inductor Converter) DC-DC converter is capable of operating in either step-up or step-down mode and widely used in battery-operated equipment. There are two possible modes of operation in the SEPIC converter: Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM). This paper presents modeling of a SEPIC converter operating in CCM using the State-Space Averaging (SSA) technique. The modeling leads to a small-signal linear model of the converter, from which the transfer functions used for feedback control design can be determined. Results are presented to verify the accuracy of the obtained model. ©2009 IEEE.
Some of the metrics are blocked by your
consent settings
Practical compensation circuit design of switched mode power supplies
(2003-01-01)
Kittipeerachon, K.
;
Bunlaksananusorn, C.
This paper presents practical Switched Mode Power Supplies (SMPS) compensation circuit design based on the frequency response method. The design is aided by MATLAB, which facilitates the formulation of transfer functions, construction of Bode plots, and calculation of compensation circuit component values. Design examples are given for a buck and a boost converters. Experimental results obtained from the prototype converters show good output voltage regulation and fast transient response to a step-load change, confirming the practicality and validity of this design method.
Some of the metrics are blocked by your
consent settings
Large-signal average modeling and simulation of DC-DC converters with SIMULINK
(2007-10-01)
Chrin, P.
;
Bunlaksananusorn, C.
In this paper, modeling and simulation of DC-DC converters under SIMULINK environment is presented. The modeling is performed with a buck converter, employing three different control schemes: voltage-mode control, current-mode control, and average current-mode control. The resulted models are a nonlinear average model that can be used to simulate the converter performance under large-signal condition. Experiment on the prototype circuits subjected to a load current disturbance yields the results which are in reasonable agreement with their simulated counterparts, confirming the validity of the developed models. © 2007 IEEE.
Some of the metrics are blocked by your
consent settings
Design of a Single-Stage Single-Switch Power-Factor-Corrected (S 4-PFC) AC/DC converter
(2007-12-01)
Kongthawornwattana, P.
;
Bunlaksananusorn, C.
;
Kittiratsatcha, S.
This paper presents the design of a Single-Stage Single-Switch Power-Factor-Corrected (S<sup>4</sup>PFC) AC/DC converter. The converter under study is an integration of boost and flyback converters. The converter operation is equivalent to its two-stage counterpart with switches in the PFC and DC/DC converter stages turned on and off at the same time. Based on this observation, power circuit and control loop design of the converter can be carried out using standard design equations and methods, after the bulk capacitor voltage has been determined. This design concept is applied to design a 120W (12V, 10A) S <sup>4</sup>PFC AC/DC converter. Fxperimental results are given to confirm validity of the proposed design method. © 2007 IEEE.
Some of the metrics are blocked by your
consent settings
Performance comparison of continuous conduction mode (CCM) and discontinuous conduction mode (DCM) flyback converters
(2003-01-01)
Howimanporn, S.
;
Bunlaksananusorn, C.
This paper presents performance comparison of Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) flyback converters. The comparison is conducted through experiment on the 5V/25W, 50kHz prototype CCM and DCM flyback converters, which have been designed and built with similar circuit layouts, components, and power ratings. Aspects to be compared are component stress, output voltage regulation and transient response due to a step-load, and efficiency. The pros and cons for each mode of operation are discussed based on the experimental results.
Some of the metrics are blocked by your
consent settings
Dynamic modeling of a Zeta converter with state-space averaging technique
(2008-10-06)
Vuthchhay, Eng
;
Bunlaksananusorn, Chanin
A Zeta converter is a fourth-order DC-DC converter made up of two inductors and two capacitors and capable of operating in either step-up or step-down mode. Compared with a Cuk or Sepic converters, the Zeta converter has received the least attention and its dynamic properties have never been reported before in the literature. This paper presents dynamic modeling of a Zeta converter with State-Space averaging (SSA) technique. The modeling leads to a small-signal linear dynamic model of the converter, from which the transfer functions used for feedback control design can be determined. Simulation results are presented to verify the accuracy of the obtained model. © 2008 IEEE.

Bunlaksananusorn, Chanin

Filters

Settings

Sort By

Results per page