A new technique for reducing switching losses in pulse-width-modulated boost converter

2003 ◽  
Author(s):  
Yungtaek Jang ◽  
M.M. Jovanovic
Keyword(s):  
Pulse Width ◽  
Boost Converter ◽  
New Technique ◽  
Pulse Width Modulated ◽  
Switching Losses ◽  
A New Technique

Variable Resistance Type Energy Regenerative Damper Using Pulse Width Modulated Step-up Chopper

2001 ◽  
Vol 124 (1) ◽  
pp. 110-115 ◽  
Author(s):  
Sang-Soo Kim ◽  
Yohji Okada
Keyword(s):  
Pulse Width ◽  
High Speed ◽  
Low Voltage ◽  
Dead Zone ◽  
Control Technique ◽  
Vibration Energy ◽  
Low Speed ◽  
Pulse Width Modulated ◽  
Active Mass Damper ◽  
A New Technique

This paper describes a new technique for improving the damping property and efficiency of an energy regenerative damper. It is intended for a linear DC motor type vibration damper to regenerate vibration energy efficiently. Normally a regenerative damper can regenerate vibration energy only at high speed motion. For low speed motion, the damper has nonlinear characteristics with dead zone and cannot regenerate energy. In order to overcome this problem, a step-up chopper is introduced between the actuator and the charging circuit. The energy is regenerated from low speed and low voltage actuator to high voltage charging circuit. This paper also proposes a new control technique to the step-up chopper by using pulse width modulated signals. The damper can change its damping coefficient and the energy can be regenerated more efficiently. The proposed damper is applied to an active mass damper system. A simple experimental setup is used to validate the proposed technique. The results show an increase in performance and energy regeneration as compared to the previously proposed regenerative damper.

A New Technique for SET Pulse Width Measurement in Chains of Inverters Using Pulsed Laser Irradiation

2009 ◽  
Vol 56 (4) ◽  
pp. 2014-2020 ◽  
Author(s):  
V. Ferlet-Cavrois ◽  
D. McMorrow ◽  
D. Kobayashi ◽  
N. Fel ◽  
J. S. Melinger ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Pulse Width ◽  
Pulsed Laser ◽  
New Technique ◽  
Width Measurement ◽  
A New Technique ◽  
Pulsed Laser Irradiation

A new zero-voltage transition pulse width modulated boost converter

2011 ◽  
Vol 4 (7) ◽  
pp. 827 ◽  
Author(s):  
H. Bodur ◽  
S. Cetin ◽  
G. Yanik
Keyword(s):  
Pulse Width ◽  
Boost Converter ◽  
Pulse Width Modulated ◽  
Zero Voltage

Energy Regenerative Damper Using Pulse Width Modulated (PWM) Step-up Chopper

1999 ◽  
Author(s):  
Sang-Soo Kim ◽  
Yohji Okada
Keyword(s):  
Pulse Width ◽  
High Speed ◽  
Low Voltage ◽  
Dead Zone ◽  
Control Technique ◽  
Vibration Energy ◽  
Low Speed ◽  
Pulse Width Modulated ◽  
Dynamic Type ◽  
A New Technique

Abstract This paper describes a new technique of improving the efficiency of an energy regenerative damper. It is intended for an electro-dynamic type vibration damper to regenerate vibration energy efficiently. Normally regenerative damper can regenerate vibration energy only at high speed motion. For low speed motion, the damper has nonlinear characteristics with dead zone and the energy is not regenerated. In order to overcome the problem of dead zone, a step-up chopper is introduced between the actuator and the charging circuit. The energy is regenerated from the low speed and low voltage actuator to high voltage charging circuit. This paper also proposes a new control technique to the step-up chopper by using pulse width modulated (PWM) signal. The proposed damper is applied to a dynamic damper system and is simulated on a computer. A simple experiment is performed to confirm the proposed technique. The results show an improvement in performance than the usual regenerative damper.

scholarly journals Improvement of Stability in a PCM-Controlled Boost Converter with the Target Period Orbit-Tracking Method

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1432 ◽  
Author(s):  
Yanfeng Chen ◽  
Fan Xie ◽  
Bo Zhang ◽  
Dongyuan Qiu ◽  
Xi Chen ◽  
...  
Keyword(s):  
Implementation Process ◽  
Current Mode ◽  
Boost Converter ◽  
Duty Ratio ◽  
Current Loop ◽  
Stable Range ◽  
Chaotic State ◽  
Pulse Width Modulated ◽  
Stable Operating ◽  
A New Technique

Thee peak-current-mode (PCM) control strategy is widely adopted in pulse width-modulated (PWM) DC-DC converters. However, the converters always involve a sub-harmonic oscillating state or chaotic state if the active duty ratio is beyond a certain range. Hence, an extra slope signal in the inductor-current loop is used to stabilize the operation of the converter. This paper presents a new technique for enlarging the stable range of PCM-controlled DC-DC converters, in which the concept of utilizing unstable period-1 orbit (UPO-1) of DC-DC converters is proposed and an implementation scenario based on the parameter-perturbation method is presented. With the proposed technique, perturbations are introduced to the reference current of the control loop, and the converters operating in a chaotic state can be tracked, and thus be stabilized to the target UPO-1. Therefore, the stable operating range of the converters is extended. Based on an example of a PCM-controlled boost converter, simulations are presented as a guide to a detailed implementation process of the proposed technique, and comparisons between the proposed technique and techniques in terms of ramp compensation are provided to show the differentiation in the performance of the converter. Experimental results in the work confirm the effectiveness of the proposed technique.

Design and Simulation of Energy Efficient Fixed Frequency Pulse Controlled Power Converter for Induction Melting Application

2013 ◽  
Vol 768 ◽  
pp. 404-410
Author(s):  
Nagarajan Booma ◽  
S. Rama Reddy ◽  
M. Beryl
Keyword(s):  
Control Strategy ◽  
Power Supply ◽  
High Frequency ◽  
Pulse Width ◽  
Harmonic Distortion ◽  
Power Converter ◽  
Induction Melting ◽  
Pulse Width Modulated ◽  
Switching Losses ◽  
Frequency Inverter

This paper discusses the design and simulation of pulse width modulated based circuit for induction melting application. This high frequency inverter topology have the practical advantages of energy saving, clean environment, high output power due to low switching losses, less electromagnetic noise and low total harmonic distortion. This two stage power converter has single phase full bridge rectifier, DC filter, zero voltage switching pulse width modulation controlled high frequency inverter. In this work, the steady state operation and control strategy of pulse width modulated high frequency inverter is analyzed. In order to achieve energy efficiency switching losses are reduced by operating the inverter above resonance frequency. Input side supply harmonics is also reduced using EMI filter. The simulation of the designed high frequency power supply is carried out at a frequency of 20 kHz using MATLAB simulink tool. Simulation results proof the energy saving due to reduction in switching losses of the presented control strategy and reduction in harmonic distortion of the presented power supply for induction heating load.

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