News & Stories

CTM Filters Lower PM Motor Drive Investment

CTM Filters Lower PM Motor Drive Investment

Lower the capital investment (CAPEX) of your motor drive system. Avoid costly derates, without sacrificing performance. A better solution exists today.   CTM HighSine™ & FlexSine® Filters  Terminology: VFD (THD OUT): The total harmonic distortion...

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High Frequency Filtering For High Speed Motors

High Frequency Filtering For High Speed Motors

High Frequency Motor Applications Require Extra Filtering   High frequency motor applications lead to higher harmonic distortion for the entire motor drive system. To account for this one can either reduce the harmonics by derating the VFD, increasing the drive...

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GridHawk® Series Advantages

GridHawk® Series Advantages

GridHawk Passive Harmonic Filters   CTM’s GridHawk® series passive harmonic filters boast several key advantages over market standard harmonic filters. These advantages include: High Grid Voltage Survivability GridHawk® filters are unique in that they are built...

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Film Capacitors vs. Electrolytic Capacitors

Film Capacitors vs. Electrolytic Capacitors

Film Capacitor Advantages   CTM Magnetics utilizes high-reliability poly-film capacitors. Compared to the electrolytic capacitors used in our competitors’ filters, CTM's film capacitor advantages include higher temperature ratings, higher surge voltage ratings,...

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Sealed Contactors Protect Outdoor Harmonic Filters

Sealed Contactors Protect Outdoor Harmonic Filters

Sealed Contactors Protect Outdoor Harmonic Filters   Many harmonic filters use NEMA 3R outdoor cabinets in blowing dust or high humidity environments. A harmonic filter awaiting installation in the field for 30 days can collect enough dust on the contactor to...

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CTM Sine Wave Filters Don’t Create Common Mode Noise

CTM Sine Wave Filters Don’t Create Common Mode Noise

Common Mode Noise Protection   Conventional sine wave filters introduce a substantial amount of common mode noise. Common-mode (bearing) current can have disastrous effects on induction motors, leading to electric fluting and premature bearing failure. As a...

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Impact of Cable Connection Length on Harmonic Distortion

Impact of Cable Connection Length on Harmonic Distortion

The Problem With Cable Length   Long cables increase harmonic distortion for the overall motor drive system (figure 1). CTM discovered the effect of cable lengths on harmonic distortion through customer provided field data. Due to the additional noise generated...

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Advantages of CTM Liquid Cooled Technology

Advantages of CTM Liquid Cooled Technology

Customer Case Studies:   Customer Case Study #1: Military Application CTM Magnetics engineered the highest power density solution of it's kind in order to solve a power conversion problem no one else could. Now, CTM parts are used on all DDG 1000 class US Naval...

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The Basics of Reactors

The Basics of Reactors

Introduction: In order to understand the basics of reactors, we first need to look at how motor drive systems work. Motors that operate on alternating current need special power supplies that deliver power to start and stop the motor smoothly. For example, a motor...

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The Basics of Passive Harmonic Filters

The Basics of Passive Harmonic Filters

Introduction: In order to understand the basics of passive harmonic filters, we first need to look at how motor drive systems work. Motors that operate on alternating current need special power supplies that deliver power to start and stop the motor smoothly. For...

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Microgrids Growing Beyond Expectations

Microgrids Growing Beyond Expectations

Microgrids are Growing Washington state received $7 million from the state's Clean Energy Fund, which has been earmarked to improve the efficiency, security, and reliability of Washington's electrical grid. A portion of the grant is being applied to build a microgrid...

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