A fast response zero-voltage-transition pulse-width modulation boost converter using a variable gain control technique

2008 ◽  
Author(s):  
Yuk-Ming Lai ◽  
Siew-Chong Tan ◽  
Sze-Nok Chan
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Gain Control ◽  
Fast Response ◽  
Boost Converter ◽  
Control Technique ◽  
Variable Gain ◽  
Zero Voltage

A Novel Soft Switching Based Fuzzy Logic Control for Single Phase Inverter

2014 ◽  
Vol 573 ◽  
pp. 143-149
Author(s):  
N. Ismayil Kani ◽  
B.V. Manikandan ◽  
Prabakar Perciyal
Keyword(s):  
Fuzzy Logic ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Soft Switching ◽  
Switching Frequency ◽  
Pwm Inverter ◽  
Zero Voltage Switching ◽  
Control Scheme ◽  
Zero Voltage ◽  
Voltage Switching

—This The Pulse Width Modulation (PWM) DC-to-AC inverter has been widely used in many applications due to its circuit simplicity and rugged control scheme. It is however driven by a hard-switching pulse width modulation (PWM) inverter, which has low switching frequency, high switching loss, high electro-magnetic interference (EMI), high acoustic noise and low efficiency, etc. To solve these problems of the hard-switching inverter, many soft-switching inverters have been designed in the past. Unfortunately, high device voltage stress, large dc link voltage ripples, complex control scheme and so on are noticed in the existing soft-switching inverters. This proposed work overcomes the above problems with simple circuit topology and all switches work in zero-voltage switching condition. Comparative analysis between conventional open loop, PI and fuzzy logic based soft switching inverter is also presented and discussed. Keywords—Zero voltage switching, Inverter, Dc link, PI controller, Fuzzy logic system control ,Modulation strategy, Soft switching

scholarly journals Bounding the Output Error in a Buck Power Converter Using Perturbation Theory

2008 ◽  
Vol 2008 ◽  
pp. 1-20 ◽  
Author(s):  
Fabiola Angulo ◽  
Enric Fossas ◽  
Tere M. Seara ◽  
Gerard Olivar
Keyword(s):  
Perturbation Theory ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Dynamic Control ◽  
Power Converter ◽  
Control Technique ◽  
Order System ◽  
Sliding Surface ◽  
Output Error ◽  
Average Theory

We show the main results obtained when applying the average theory to Zero Average Dynamic control technique in a buck power converter with pulse-width modulation (PWM). In particular, we have obtained the bound values for output error and sliding surface. The PWM with centered and lateral pulse configurations were analyzed. The analytical results have confirmed the numerical and experimental results already obtained in previous publications. Moreover, through an important lemma, we have generalized the theory for any stable second-order system with relative degree 2, using properties related to transformations and stability of linear systems.

10 Gb/s Burst-Mode Transimpedance Preamplifier in 0.13µm CMOS Technology

2012 ◽  
Vol 241-244 ◽  
pp. 2215-2220
Author(s):  
Gao Wei Gu ◽  
En Zhu
Keyword(s):  
Gain Control ◽  
Cmos Technology ◽  
Fast Response ◽  
High Gain ◽  
Settling Time ◽  
Output Buffer ◽  
Peak Detector ◽  
Burst Mode ◽  
Variable Gain ◽  
Response Peak

A 10Gbit/s burst-mode transimpedance preamplifier is described. Regulated cascade (RGC) TIA core with variable gain, fast response peak detector, single-to-differential and output buffer are included, providing auto-gain-control and threshold extraction functions. The burst-mode preamplifier is implemented by 0.13µm CMOS technology, presents a high gain of 67.9dB with a 3-dB bandwidth of 6.92GHz and a low gain of 57.4dB with a 3-dB bandwidth of 8.60GHz with a settling time less than 20ns.

scholarly journals A Speed Control of DC Motor with PWM Using Microcontroller in Hardware in Loop

2018 ◽  
Vol 7 (3.27) ◽  
pp. 116
Author(s):  
S Reeba Rex ◽  
Mary ` Synthia Regis Praba2
Keyword(s):  
Duty Cycle ◽  
Pulse Width ◽  
Firefly Algorithm ◽  
Pulse Width Modulation ◽  
Speed Control ◽  
Dc Motor ◽  
Boost Converter ◽  
Motor Speed ◽  
Speed Controller ◽  
Hardware In Loop

This paper presents an implementation of a microcontroller based boost converter to maintain constant speed of a DC motor. The optimised values namely kp,ki,kd  of the  Boost Converter  are taken from firefly algorithm[10] and implemented using microcontroller. Pulse width modulation (PWM) is a procedure to generate changeable pulse width with different duty cycle. The PWM signal reduces the switching losses. This paper presents a DC motor speed controller where PID Controller is used where the optimized values of kp,ki,kd are taken from firefly algorithm[10]. The PWM pulse width will alter the speed of the motor.  The motor voltage and revolutions per seconds (RPS) obtained at different duty cycle rates. With increase in duty cycle, further voltage is applied to the motor. This gives stronger magnetic flux in the armature windings and to enhance revolutions per seconds. The characteristics and concert of the DC motor speed control system was discussed. In this paper, a PIC microcontroller is designed with a DC-DC boost converter for the motor speed controller system. Finally to improve the graphical result we design the hardware in loop method using matlab.  

Discrete‐time sliding‐mode‐based digital pulse width modulation control of a boost converter

2015 ◽  
Vol 8 (5) ◽  
pp. 708-714 ◽  
Author(s):  
Enric Vidal‐Idiarte ◽  
Adria Marcos‐Pastor ◽  
Germain Garcia ◽  
Angel Cid‐Pastor ◽  
Luis Martinez‐Salamero
Keyword(s):  
Discrete Time ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Sliding Mode ◽  
Boost Converter ◽  
Digital Pulse ◽  
Modulation Control

scholarly journals A Zero-Voltage-Transition Interleaved Boost Converter and Its Application to PFC

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Lúcio dos Reis Barbosa
Keyword(s):  
Conversion Efficiency ◽  
Power Factor ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Power Factor Correction ◽  
Switching Frequency ◽  
High Conversion Efficiency ◽  
Interleaved Boost Converter ◽  
Efficient Power ◽  
Zero Voltage

An efficient power factor correction converter is presented. Two boost-topology switching cells are interleaved to minimize EMI while operating at lower switching frequency and soft switching to minimize losses. The result is a system with high conversion efficiency, able to operate in a pulse-width-modulation (PWM) way. Seven transition states of the ZVT converter in one switching period are described. In order to illustrate the operational principle key, implementation details, including simulations, are described. The validity of this converter is guaranteed by the obtained results.

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