解决方案简介

Download a PDF version of this page Download a PDF version of this page Defining the added benefits of the dV Sentry™ versus a shaft grounding brush. What’s a Shaft Grounding Brush? A common method across industries is to use a shaft grounding brush or ring to protect motor bearings from common mode over voltage. A shaft… Read more »

  Download a PDF version of this page   Power quality solutions for line side harmonic distortion in non-linear loads What are Harmonics? Harmonics can be best described as the shape or characteristics of a voltage or current waveform relative to its fundamental frequency. But what does that mean? Well, the ideal power source for all power systems are… Read more »

  Download a PDF version of this page   Understanding the creation, effects, and how to reduce common mode over voltage What is Common Mode? To start off, common mode is bad. Common mode voltage is created by Variable Frequency Drives (VFDs) that serve as a way of controlling the speed of AC motors by… Read more »

Download a PDF version of this page Load-side solutions for power quality in systems using Variable Frequency Drives How Variable Frequency Drives (VFDs) Work VFDs serve as a way of controlling the speed of AC motors by varying the frequency of the power source using pulse width modulation (PWM). This is done by switching the transistors, IGBTs, or thyristors,… Read more »

A simplified approach to what you need to know. VFDs Add Efficiency…But Create Power Quality Issues Adding a VFD to electrically control motor speed increases efficiency by limiting energy consumption and reducing equipment wear. However, VFDs inadvertently create power quality issues in the form of harmonics, which are changes or distortions in the waveforms. There… Read more »