Information

Joliet Technologies is dedicated to providing our customers and website visitors with quality information about our products and services. As well as helpful information you can use to make well informed decisions regarding your drive needs. 

In addition we will make every effort to provide hard to find information you can use on a daily basis. If there is specific information regarding variable frequency drives, variable speed drives and adjustable speed drives you are looking for and did not find it, let us know and we will do our best to find it and publish it. Below are links to information at our site we hope you find helpful. 

• Technical Guide to Harmonics with AC Drives - Introduction
  • Basics of the harmonics phenomena
  • Harmonic distortion sources and effects
  • Harmonic distortion calculation by using DriveSize software
    • Circuit diagram for the calculation example
    • Input data for motor load
    • Motor selection
    • Inverter selection
    • Network and Transformer data input
    • Calculated harmonic current and voltage
    • Calculated harmonic currents in graphical form
    • Part of the printed report
  • Standards for harmonic limits
    • EN61800-3 (IEC1800-3) Adjustable speed electrical power drive systems
    • IEC1000-2-2, Electromagnetic compatibility (EMC)
    • IEC1000-2-4, Electromagnetic compatibility (EMC)
    • IEC1000-3-2, Electromagnetic compatibility (EMC)
    • IEC1000-3-4, Electromagnetic compatibility (EMC)
    • IEEE519, IEEE Recommended practices and requirements for harmonic control in electrical power systems
  • Evaluating harmonics
  • How to reduce harmonics by structural modifications in the AC drive system
    • Factors in the AC drive having an effect on harmonics
    • Table: List of the different factors and their effects
    • Using 6-pulse diode rectifier
    • Using 12-pulse or 24-pulse diode rectifier
    • Using phase controlled thyristor rectifier
    • Using IGBT bridge
    • Using larger DC or AC inductor
  • Other methods for harmonics reduction
    • Tuned single arm passive filter
    • Tuned multiple arm passive filter
    • External active filter
  • Summary of harmonics attenuation
    • 6-pulse rectifier without inductor
    • 6-pulse rectifier with inductor
    • 12-pulse rectifier with polycon transformer
    • 12-pulse with double wound transformer
    • 24-pulse rectifier
    • Active IGBT rectifier
  • Definitions
• FAQ (Frequently Asked Questions)
• NEMA and T-Frame Chart 
• Variable Frequency Drives and Cooling Towers
• IGBT - Insulated Gate Bipolar Transistors
  • Soft Switching Technology
• DC Drive Fundamentals
• Adjustable Speed Drives - Application Information
  • DC Drives - Principles of Operation
  • DC Drive Types
  • DC Motor Control Characteristics
  • AC Drives - Principles of Operation
  • AC Controller Types
  • AC Motor Control Characteristics
  • Motor Selection
  • AC vs. DC Drive Comparison
  • Basic Mechanics
  • Other Application Factors
  • Measuring Machine Torque
  • Mechanical Formulas
• ABB Drive Information
  • DCS 400 Digital DC Converter (20 to 1000A DC)
  • DCE 400 plus (.pdf) the complete DC Drive for regenerative or 
    non-regenerative operation 
    (20 to 260A DC, 230/380/400/415/460/500V AC, 3-Phase)
  • DCS 500 Digital DC Drive (25 to 5150A) 220...1000V, 3-phase, 
    Regenerative / Nonregenerative
  • DCS500B (.pdf) Digital DC Drive (25 to 5150A) 220 to 1000V, 
    3-phase, Regenerative / Non-regenerative
  • Direct Torque Control (.pdf) 
    (the world's most advanced AC drive technology)
  • Extruding Applications ACS 600 Adjustable Speed AC Drives for advanced speed control of 3 to 4,000 HP induction motors
  • ACS 800 (.pdf) Drive^IT Low Voltage AC Drive Catalogue 
  • ACS 1000 (.pdf) Medium-Voltage Drives for speed and torque 
    control of 400-6700Hp motors - Technical Catalog
• SIMOREG 6RA24 Siemens DC Drive
• SIMOREG 6RA70 Siemens DC Drive
• Variable Speed Drive Case Studies
  • ABB drives & motors help RNLI
  • Paperboard mill benefits from using DC drives
  • ABB Drive cuts water pumping bill for semiconductor plant 
  • Insulation manufacturing process saves energy with ABB
  • ABB drives cut costs at MINI production plant
  • Film maker slashes costs with ABB drives
  • ABB drive cuts costs for wooden toy company
  • Close pump control doubles efficiency for West of Scotland Water
  • ABB energy appraisal saves £17,000 for cooker plant
  • Staggering energy savings prove value of professional audit
  • Soft starters save costs for mechanical engineers
• Model 1681 Instruction Manual (Firing Circuits)

As always feel free to contact us with any questions and/or comments you may have.

Helpful Internet Links

• Electric Motors, DC Motors, Stepper Motors & Servo Motors Electric Motors Machine Design offers engineers information they need for AC motors, DC motors, stepper motors and servo motors.
• Variable Frequency Drive Energy Savings Calculator