解决方案简介

Motor Bearing Protection Guide

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 »

Harmonic Solution Guide

  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 »

Common Mode Overview and Reduction Guide

  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 »

Motor Protection Guide

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 »

Variable Frequency Drive Effects on Power Quality

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 »

Harmonic Solution Guide

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 smooth sinusoidal waves. These perfect…

Motor Bearing Protection Guide

Defining the added benefits of the dV Sentry™ versus a shaft grounding brush Unresolved Issues 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 grounding brush is not a filter, so it does not help reduce or protect equipment…

Common Mode Overview and Reduction Guide

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 varying the frequency of the power source using pulse width modulation (PWM). This…

Meeting IEEE-519 with a Six-Pulse VFD

A six-pulse VFD with a Matrix® AP is a better and more cost effective solution to conform to IEEE-519 than a multi-pulse or AFE drive Use of VFDs & Harmonic Issues Many industries across the globe use Variable Frequency Drives (VFDs) to efficiently control the electrical power needed to run motors, pumps, and other mechanical systems.…

Motor Protection Guide

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, on and off continuously.…