| Image | Title | Description | Download |
|---|---|---|---|
 |
Drive Impedance and Passive Filters Category: Documents, Tech Paper Date: September 19, 2018 |
While most variable frequency drives (VFD) use a built in DC choke or AC line reactor, some lower HP drives have no built-in impedance. Passive filters are an effective solution to filter harmonic currents produced by 6-pulse VFDs and reduce source current total harmonic distortion (THD) to 5% or less. | Download |
|
Passive Harmonic Filter Selection Guidelines Category: Documents, Tech Paper Date: August 13, 2018 |
Passive harmonic filters are an effective solution to filter harmonic currents. But choosing the correct filter for your application can be confusing. TCI can provide a wide range of filtering solutions and assist in choosing the right one. Find out more in our Tech Paper! | Download |
|
Line and Load Reactor Basics Category: Documents, Tech Paper Date: February 26, 2018 |
Line and load reactors can protect both motors and variable frequency drives (VFDs) from harmful current and voltage spikes and help reduce line distortions, known as harmonics. Read More! | Download |
|
Harmonic Filters: UL 508 vs UL 508A Category: Documents, Tech Paper Date: February 21, 2018 |
UL 508 covers industrial control devices and device accessories for starting, stopping, regulating, controlling, or protecting electric motors. | Download |
|
VFD DC Bus Voltage Degradation Category: Documents, Tech Paper Date: December 14, 2017 |
Variable Frequency Drive DC Bus Voltage suffers degradation due to application of passive harmonic filters with high insertion loss. | Download |
|
Reactance Tech Paper Category: Documents, Tech Paper Date: December 14, 2017 |
Impact of additional AC Line Reactance on the DC Bus Voltage of a Motor Drive. | Download |
|
Power Quality Tech Paper Category: Documents, Tech Paper Date: December 14, 2017 |
Drives and the Black Cloud of Power Quality paper describes the differences between harmonic filter options. | Download |
|
Power Quality of UV Systems Category: Documents, Tech Paper Date: December 14, 2017 |
Active filtering solutions are being more commonly applied in wastewater plants. The elimination of the base linear motor loads has also highlighted the power quality of the UV systems – high harmonic currents and a low, leading power factor. One solution is to integrate active filtering into these systems, so they are do not adversely affect the overall IEEE-519 compliance of the plant. | Download |
|
Motor Failures Tech Paper Category: Documents, Tech Paper Date: December 14, 2017 |
Eliminating Motor Failures Due to IGBT-Based Drives when Connected with Long Leads. | Download |
|
IEEE 519 Tech Paper Category: Documents, Tech Paper Date: December 14, 2017 |
Meeting IEEE 519-1992 Harmonic Limits and Improving Power Factor using TCI Passive Harmonic Filters. | Download |
|
Hybrid Tech Paper Category: Documents, Tech Paper Date: December 14, 2017 |
In many installations with high levels of harmonic currents, the most economical harmonic mitigation solution can be a properly sized combination of line reactors, active and passive filters. | Download |
|
High Voltage Distortion Category: Documents, Tech Paper Date: December 14, 2017 |
High background voltage distortion can result in equipment malfunction and reduce the likelihood of meeting IEEE-519. Background distortion levels of 5% and higher are being seen at facilities from oil and gas pumping sites to industrial plants. It is critical to select the right harmonic mitigation approach under these harsh voltage conditions. | Download |
|
Carrier Suppression in Pumps Category: Documents, Tech Paper Date: December 14, 2017 |
Sinewave filters that highly attenuate carrier energy are required to protect leads and motors. | Download |
|
HarmonicGuard Notes Category: Documents, Tech Paper Date: December 14, 2017 |
The paper describes the effects of harmonic current and voltage distortion, as well as the source of poor power factor. | Download |
|
Harmonic Distortion in Data Centers Category: Documents, Tech Paper Date: December 14, 2017 |
Power quality and power reliability are critical to data center operation. As strides have been made to improve energy efficiency and Power Utilization Effectiveness (PUE) it is important to ensure harmonics and power quality are not compromised as a result. | Download |
|
Generator Compatibility Passive Filters Category: Documents, Tech Paper Date: December 14, 2017 |
All passive filters on the market today, regardless of kVAR, require capacitor disconnect contactors to be compatible with small generators at no load. Read More! | Download |
|
Common Mode Tech Paper Category: Documents, Tech Paper Date: December 14, 2017 |
V1k dv/dt output filters significantly reduce common mode current, increasing motor bearing life. | Download |
|
Changes to IEEE 519 Standard Category: Documents, Tech Paper Date: December 14, 2017 |
IEEE 519-2014 standard replaces the 1992 version. A number of key changes and differences exist between the two revisions, including clarification of how harmonic limits are applied at the point of common coupling, current THD limits at the PCC, and high frequency current allowance in low current distortion systems. | Download |