Technical Articles

Harmonic Mitigation in Variable Frequency Drives: 6-Pulse Drive with Matrix AP Harmonic Filter vs. AFE Drive

Todd Shudarek, Principal Engineer – The proliferation of variable frequency drives (VFDs) has brought increased attention to harmonic effects created by drives. A standard 6-pulse drive with no harmonic mitigation technology may interfere with neighboring equipment, reduce equipment life, and negatively impact the utility power quality. Under some circumstances the total harmonic current distortion (THID)… Read more »

Harmonic Mitigation in Variable Frequency Drives: 6-Pulse Drive with MTE Matrix AP Harmonic Filter vs. 18-Pulse Drive

Todd Shudarek, Principle Engineer – The proliferation of variable frequency drives (VFDs) has brought increased attention to harmonic effects created by drives. A standard 6-pulse drive with no harmonic mitigation technology may interfere with neighboring equipment, reduce equipment life, and negatively impact the utility power quality. Under some circumstances the total harmonic current distortion (THID)… Read more »

Permian Basin

MTE Offers Solutions to Ensure Power Quality in the Permian Basin Local Utility Companies are Demanding that Oil Producers Control Their Harmonic Distortion The Permian Basin, which is located in West Texas and New Mexico, has recently become the global hot bed of oil production. This is great for the local and national economy; however, it… Read more »

Using a Passive Sinewave Filter to Eliminate Common Mode and Differential Mode

An integrated output filter that eliminates motor problems due to the PWM waveforms in both common mode and differential mode operation is proposed. The filter includes a three phase inductor constructed with tricore laminations with six mutually coupled windings. The windings possess differential mode inductance and proportionally very large common mode inductance characteristics. The single integrated inductor with the capacitors creates a…