Day One and Two - Power Quality Analysis Training Course
Instructor
John Houdek, Power Quality Consultant, The Electricity Forum
DAY ONE
POWER QUALITY DISTURBANCES
• Typical Disturbances
• Disturbances associated with motor control applications
• Voltage quality
VOLTAGE SAGS
• Across the line motor starting
• What are effects of voltage sags
• Motor inrush current
• Flat – topped voltage
• Preventing Voltage sags
• Soft starting with VFDs, RVSS
POWER FACTOR
• Fundamental Frequency Power Factor
• Causes of low power factor
• What are effects of low power factor
• Motor currents
• Power factor vs energy savings
• Improving Power Factor
• Selection methods for power factor capacitors
• Cost of low power factor
• Locating PF capacitors
• Capacitor applications issues
• Best practices
VOLTAGE TRANSIENTS
• Sources of transients
• What are effects of transients
• Capacitor switching transients
• Effects of Transients on drives
• Voltage notching
• Best practices
DAY TWO
HARMONICS
• What is harmonic distortion and what does it look like?
• What are effects of harmonics
• Causes of harmonic distortion
• Power system reactance – effect on harmonics
• AC-DC Rectifier types
• Problems caused by harmonics
• Harmonics vs energy loss
• Harmonic Voltage distortion & effect on circuit elements
• Capacitors vs harmonics
• Harmonic resonance
• IEEE-519-2014 harmonic distortion limits
• Analyzing harmonic distortion
• Remedies for harmonic distortion
• Line reactors
• Tuned harmonic filters
• Wide band harmonic filters
• Multi-pulse drives
• Active filters
• Filter for grid connected inverters
• Symptoms of harmonics
• Best practices
PWM Voltage effects on motors
• PWM effects on motor temperature
• What are effects of PWM Voltage
• PWM voltage when motors have long cables
• Motor bearing currents
• Remedies for PWM motor issues
EMI / RFI
• Definition of EMI and RFI
• What are effects of EMI/RFI
• Equipment vulnerable to EMI
• Causes of EMI
• EMI propagation methods
• Measuring common mode current
• Remedies for EMI
• Best practices
Cautions for Retrofits
• Starter to VFD upgrades
• LED lighting upgrades
• Best practices
Waveforms & Measurements
Day Three - Power Factor Correction Training
Instructor - John Houdek, Power Quality Consultant, The Electricity Forum
Introduction to Power Factor
- Definition Of Power Factor
- Benefits Of High Power Factor
- Problems With Low Power Factor
- Types Of Power Factor
Fundamental Frequency (Displacement) Power Factor
- Motor Currents And PF
- Typical PF By Industry
- Lagging (Inductive) Current
- Leading (Capacitive) Current
- How Much Capacitance To Add
- Harmonic Resonance
- Detuning Capacitors To Avoid Resonance
- Capacitor Boosting (Voltage, KVAR, Current)
- Local Vs. Centralized Capacitors
- Fixed Vs. Automatic PF Capacitor Systems
- Capacitor Switching Device Ratings
- Cost Of Low Power Factor
Distortion Power Factor
- Estimating Distortion PF Based On Harmonic Current Distortion
- Causes Of Low Distortion Power Factor (Harmonic Distortion)
- Typical Current Distortion By Equipment
- What Does Harmonic Current Distortion Look Like?
- Improving Distortion PF
Total (true rms) Power Factor
- Function Of Both Displacement And Distortion PF
- Best Practices
- Decisions To Be Made About Total PF
Questions and Answers
COURSE SCHEDULE:
All Days days:
Start: 10 a.m. Eastern Time
Finish: 4:30 p.m. Eastern Time
