Implementation of Control Variables to Exploit Output Power for Switched Reluctance Generators in Single Pulse Mode Operation

2016 ◽  
Vol 29 (4) ◽  
Keyword(s):  
Output Power ◽  
Single Pulse ◽  
Pulse Mode ◽  
Control Variables ◽  
Switched Reluctance ◽  
Mode Operation

scholarly journals 808 nm tapered diode lasers optimised for high output power and nearly diffraction-limited beam quality in pulse mode operation

2007 ◽  
Author(s):  
Ole B. Jensen ◽  
Andreas Klehr ◽  
Frank Dittmar ◽  
Bernd Sumpf ◽  
Götz Erbert ◽  
...  
Keyword(s):  
Output Power ◽  
Beam Quality ◽  
Diode Lasers ◽  
Pulse Mode ◽  
High Output Power ◽  
Mode Operation ◽  
High Output

9-W Output Power From an 808-nm Tapered Diode Laser in Pulse Mode Operation With Nearly Diffraction-Limited Beam Quality

2007 ◽  
Vol 13 (5) ◽  
pp. 1194-1199 ◽  
Author(s):  
Frank Dittmar ◽  
Andreas Klehr ◽  
Bernd Sumpf ◽  
Arne Knauer ◽  
Jorg Fricke ◽  
...  
Keyword(s):  
Diode Laser ◽  
Output Power ◽  
Beam Quality ◽  
Pulse Mode ◽  
Mode Operation ◽  
Tapered Diode Laser

scholarly journals Simulation of Switched Reluctance Generator in Low and Medium Speed Operations for Wind Energy Application

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
A. Arifin ◽  
I. H. Al-Bahadly ◽  
S. C. Mukhopadhyay
Keyword(s):  
Manufacturing Industry ◽  
Closed Loop ◽  
Single Pulse ◽  
Least Square Method ◽  
Pulse Mode ◽  
Least Square ◽  
Voltage Level ◽  
Loop Control ◽  
Switched Reluctance ◽  
Medium Speed

This paper provides a new approach to maximize the amount of power generated by the switched reluctance generator (SRG) in the low and medium speed operations. There are many control variables which affect the power generated such as: firing angles, reference current, speed and voltage. It will incur high costs and time consuming to modify the variables using experimental set up. Hence, to minimize time, cost and aid in the manufacturing industry, a simulation model of the overall SRG drive is developed. The objective of the work is to identify the optimal parameters and characterize them under closed loop control. The study indicates that there is an optimal voltage, firing angles and reference current at each speed range. Also, the percentage of the power generated can be categorized as a function of dwell angle and speed at optimal voltage level. The optimal dwell angle is determined using the least square method. Within the closed loop system, the high percentage of power generated can be maintained by adjusting the voltage level. It allows operation in single pulse mode as opposed to the conventional current chopping during the low and medium speed.

Efficiency Improvement of Switched Reluctance Motor by Single-Pulse Control with Variable Excitation Period

2015 ◽  
Vol 135 (3) ◽  
pp. 284-290 ◽  
Author(s):  
Yoshihiro Nakazawa ◽  
Kazuhiro Ohyama ◽  
Hiroaki Fujii ◽  
Hitoshi Uehara ◽  
Yasushi Hyakutake
Keyword(s):  
Single Pulse ◽  
Switched Reluctance Motor ◽  
Efficiency Improvement ◽  
Pulse Control ◽  
Switched Reluctance ◽  
Reluctance Motor ◽  
Excitation Period

scholarly journals Influence of Duty Ratio and Current Mode on Robot 316L Stainless Steel Arc Additive Manufacturing

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 508
Author(s):  
Ping Yao ◽  
Hongyan Lin ◽  
Wei Wu ◽  
Heqing Tang
Keyword(s):  
Stainless Steel ◽  
Additive Manufacturing ◽  
Heat Input ◽  
Low Frequency ◽  
Single Pulse ◽  
Pulse Mode ◽  
Double Pulse ◽  
Duty Ratio ◽  
Utilization Rate ◽  
Specimen Height

Wire and arc additive manufacturing (WAAM) is usually for fabricating components due to its low equipment cost, high material utilization rate and cladding efficiency. However, its applications are limited by the large heat input decided by process parameters. Here, four 50-layer stainless steel parts with double-pulse and single-pulse metal inert gas (MIG) welding modes were deposited, and the effect of different duty ratios and current modes on morphology, microstructure, and performance was analyzed. The results demonstrate that the low frequency of the double-pulse had the effect of stirring the molten pool; therefore, the double-pulse mode parts presented a bigger width and smaller height, finer microstructure and better properties than the single-pulse mode. Furthermore, increasing the duty ratio from 35% to 65% enlarged the heat input, which then decreased the specimen height, increased the width, and decreased the hardness and the tensile strength.

scholarly journals Modelling of an Electromagnetic Space Propulsion System for Pulse Mode Operation

2012 ◽  
Vol 38 ◽  
pp. 3691-3699
Author(s):  
S. Sarathkumar ◽  
K. Periyannaswamy ◽  
S. Thanigaiarasu
Keyword(s):  
Pulse Mode ◽  
Propulsion System ◽  
Space Propulsion ◽  
Mode Operation
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