Harmonic distortion reduction on vibrators — Suppressing the supply pressure ripples

2007 ◽  
Author(s):  
Zhouhong Wei ◽  
John J. Sallas ◽  
John M. Crowell ◽  
James E. Teske
Keyword(s):  
Harmonic Distortion ◽  
Supply Pressure ◽  
Distortion Reduction ◽  
Pressure Ripples

Harmonic distortion reduction on seismic vibrators

2010 ◽  
Vol 29 (3) ◽  
pp. 256-261 ◽  
Author(s):  
Zhouhong Wei ◽  
Thomas F. Phillips
Keyword(s):  
Harmonic Distortion ◽  
Distortion Reduction

Energieeffizienz durch Oberschwingungsreduzierung*/Energy efficiency through harmonic distortion reduction – Harmonics-minimized control strategy in production machines

2019 ◽  
Vol 109 (10) ◽  
pp. 793-800
Author(s):  
S. Ju ◽  
N. Hanenkamp
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Power Electronics ◽  
Control Strategy ◽  
Harmonic Distortion ◽  
Wird Eine ◽  
Motor Speed ◽  
Increase Energy Efficiency ◽  
Fundamental Oscillation ◽  
Distortion Reduction

Oberschwingungen durch frequenzgeregelte Antriebe wirken sich stark negativ auf den Energieverbrauch aus. Diese Oberschwingungen verstärken sich immer dann, wenn schnelle Drehzahländerungen aus Produktivitätsgründen notwendig sind. Zur Kompensation dieser Effekte müssen Steuerungsstrategien optimiert und weiterentwickelt werden. Durch die Erhöhung des Grundschwingungsanteils im Motorsteuersignal lässt sich die Energieeffizienz um bis zu 20 % steigern. Um dieses Ziel zu erreichen, wird eine Bibliothek standardisierter Steuerungsbausteine entwickelt.   The effect of harmonic distortions triggered by frequency-controlled power electronics on energy consumption is non-negligible. These distortions increase when productivity-related accelerations and decelerations occur. A new control strategy has been developed. By increasing the fundamental oscillation ratio in the motor speed changing process, it is possible to increase energy efficiency by up to 20 %. A library model has been developed.

A Column-Row-Parallel Ultrasound Imaging Architecture for 3-D Plane-Wave Imaging and Tx Second-Order Harmonic Distortion Reduction

2018 ◽  
Vol 65 (5) ◽  
pp. 828-843 ◽  
Author(s):  
Kailiang Chen ◽  
Byung Chul Lee ◽  
Kai E. Thomenius ◽  
Butrus T. Khuri-Yakub ◽  
Hae-Seung Lee ◽  
...  
Keyword(s):  
Plane Wave ◽  
Ultrasound Imaging ◽  
Harmonic Distortion ◽  
Second Order ◽  
Wave Imaging ◽  
Distortion Reduction
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