Results 281 to 290 of about 165,732 (302)

Inductor commutation soft-switched PWM inverter driven by frequency-modulated PWM signal

IEEE Transactions on Power Electronics, 1998
This paper presents a novel technique using frequency modulation (FM) to improve the efficiency of an inductor commutation soft-switched pulse-width-modulation (PWM) inverter (ICSI). In the ICSI, a circulating current for soft switching always flows through the switches of the inverter, independent of the load and input signal.
M. Nagao, K. Harada
openaire   +1 more source

Analog PWM and Digital PWM Controller IC for DC/DC Converters

2009 Fourth International Conference on Innovative Computing, Information and Control (ICICIC), 2009
In this paper, the chip designs of analog pulsewidth modulation (PWM) and digital PWM are developed and implemented for switching power converters. This research employed analog and digital PWM technology to design the DC/DC converter control system. The advantages and disadvantages between these two architectures are treated in this paper.
Li-Jen Liu, Yeong-Chau Kuo, Wen-Chieh Cheng   +2 more
openaire   +1 more source

A new direct digital PWM technique for microprocessor-based PWM inverters

PESC Record. 27th Annual IEEE Power Electronics Specialists Conference, 2002
This paper describes a new pulse width modulation (PWM) scheme suitable for a microprocessor-based PWM inverter. Optimal switching patterns (i.e., width and position of the pulses) minimizing a performance index can be generated in real time by numerical calculation using the microprocessor-based control system.
null Soon H. Kwon, null Ick Choy, K.H. Kim, H.S. Mok   +3 more
openaire   +1 more source

Experimental PWM Controlled Device

2019 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM), 2019
Using Pulse-Width Modulation (PWM) for LEDs powering, the frequency should be high enough so that the human eye does not notice flicker. High frequency also allows for a significant energy efficiency: most LEDs have a peak of the efficiency close to the maximum current allowed. Thus, the pulse switching on the current maximum with brightness adjustment
Aleksey V. Kudryashov, Elena S. Galishheva, German N. Yagovkin   +2 more
openaire   +1 more source

PWM Voltage Actuator

2018
Digital current controllers are used in grid-side inverters, generator-side inverters, electrical drives, and many other applications. Their purpose is to control the electrical current injected into the grid or the electrical current supplied to the windings of an electrical machine.
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COMPARATIVE ANALYSIS OF MODIFIED SHE-PSO PWM AND LS-PWM TECHNIQUES

2019
To address the issues of the multilevel inverters with better performance and efficiency there hasbeen increased advancements with level shift PWM technique. The paper deals with the analysis ofsome such advancements like particle swarm optimization techniques and is contrasted to pulse widthmodulation technique in terms of total harmonic reduction ...
V. Ramu, Dr. P. Satish Kumar, Dr. G.N. Srinivas   +2 more
openaire   +1 more source

PWM control of inverters

2023
This chapter focuses on the control of single-phase and three-phase voltage-source inverters that are widely used for the conversion of AC electrical energy. Pulse-width modulation is discussed as a means of generating reference voltages based on inverter discrete states.
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PWM inverterlerin incelenmesi

2020
162
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PWM DC/DC Converters

2014
In principle, the pulse DC/DC converters consist of two parts, a basic circuit and a regulating assembly. The basic circuit comprises of switches (usually a transistor and a diode), a choke and/or a transformer, and a capacitor. By turning on and off the switches in a controlled manner, the required amount of energy is transferred through the switches ...
Branko L. Dokić, Branko Blanuša
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Inverter PWM Control

2023
Shuiwen Shen, Qiong-zhong Chen
openaire   +1 more source