Motors and Variable Speed Drives

After participating in this course, you will be able to:

• Identify various types of motors, variable-speed drives, and their protection requirements.
• Apply knowledge of regenerative drives and active front-end systems.
• Choose the appropriate drive control for specific applications, including scalar, vector-field orientation, and active front-end drives.
• Analyze the four-quadrant operation of drives based on application requirements.
• Select the optimal power converter for multiple quadrant operations.

Description
Variable speed drives (VSDs) are integral to modern industrial and residential applications, powering everything from pumps and fans to compressors and process lines. Understanding these systems' operation and integration is essential for those involved in their selection, application, or maintenance. This course will equip you with a thorough understanding of VSDs, the differences between DC and AC motor fundamentals, and how these technologies can be optimized for energy efficiency and performance.

You'll delve into the core concepts of fixed and variable-speed drives, learning about their unique characteristics, applications, and criteria for selecting the right drive system. The course also explores the impact of power line effects on drive systems and covers essential installation and maintenance practices to ensure long-term reliability and safety.

By the end of this course, you will have the skills to confidently design, select, and maintain motor and drive systems tailored to your specific needs. Additionally, you'll gain hands-on experience through a drive system application workshop, enhancing your practical understanding of these critical technologies.

Who Should Attend
This course is designed for professionals selecting, applying, or maintaining motors and variable-speed drives.

Ideal attendees include manufacturing and plant engineering personnel, purchasing agents, maintenance personnel, consulting engineers, and motor designers. It's also highly suitable for electrical technicians responsible for electrical drive setups.

Additionally, the course benefits plant operators, control engineers, energy managers, and anyone interested in understanding the latest advancements in drive technology and motor systems.

Welcome, Introduction, Course Preview, Learning Outcomes and the Assessment Method

DC and AC Motor Fundamentals

• A review of motor fundamentals: DC Motors And Permanent Magnet DC Motors, Special High-Speed Motors, Rotating Field Concept, Induction Motor Squirrel Cage; Wound Rotor and

Synchronous Motors, as well as Permanent Magnet Motors

DC and AC Variable Speed Drive Fundamentals

• DC Power Converters, Choppers and Rectifiers,
• DC Drive Close Loop Control Setup and Tuning
• AC Drive Power Structure, Full REGEN DRIVE and ACTIVE FRONT END
• Voltage SCALAR DRIVES and Current Invertors
• SENSOR AND SENSORLESS VECTOR DRIVE
• DIRECT TORQUE CONTROL DRIVES and ACCELERATED VECTOR DRIVES
• MEDIUM VOLTAGE DRIVES and Applications
• Motion Control and TUNING System Requirements
• DC Injection Braking
• PWM; Amplitude and Fixed Modulation

Applications for Fixed and Variable Speed Drives

• Details of many different motor and drive applications
• SOFT STARTERS
• Limitation of SCALAR DRIVES
• Typical Application for VECTOR DRIVES
• Typical Application for FIELD ORIENTED DRIVES
• Filters and FERANTI EFFECT

Drive System Selection Criteria

• DRIVES POWER SIZING –Example of Complex Application
• Typical shortfall when selecting the Drive Type

Drive System Power Line Effects

• Power factor – what effects will the new system have on the rest of the plant
• Harmonics – what are they, and how will they affect you
• Harmonics Mitigation and FFT Study
• Special requirements for Transformers: Circuit Breakers and Cables for Large Drives

Motor and Drive System Installation and Maintenance Aspects

• What special installation efforts are required to ensure a successful application?
• What are the typical motor and drive system failures
• Root Cause Investigation
• What routine maintenance should be followed?
• The Importance of Grounding
• Internal and External Motor Drive Protection

Drive System Application Workshop

• Go through a drive selection process to apply a drive system. This will reinforce all the Course material and can be directly applied back at your plant

Questions and Answers and Feedback to Participants on Achievement of Learning Outcomes