Compare courses
Register
Harvard Medical School

Intensive Course in Transcranial Magnetic Stimulation

Add course to comparison

Next dates

Jun 17—21
5 days
Boston, MA, USA.
USD 3750
USD 750 per day

Description

CNBS offers a 5-day intensive course in TMS three times per year.

This intensive transcranial magnetic stimulation (TMS) course provides a unique opportunity for hands-on learning of the basic principles, standards of use, and potential applications of TMS in clinical neurophysiology, cognitive neuroscience, neurology, and psychiatry. It is a one-week course offered three times per year. The course is conducted in small groups of up to 24 participants with formal teaching sessions and ample practical exposure. At the end of the course participants will have learned and directly experienced how to determine motor threshold, how to record motor evoked potentials, how to conduct cortical mapping, silent period, input-output curve, and paired-pulse TMS studies, and how to safely apply repetitive TMS. Participants will have also learned how to design TMS studies, write TMS protocols and interpret findings of TMS studies.

ICTD International Centre for Training and Development

Ac Electrical Motor & Drives: Troubleshooting, Maintenance & Protection

Add course to comparison

Next dates

Aug 25—29
5 days
Dubai, United Arab Emirates
USD 3300
USD 660 per day

Unsure if this course is right for you? Connect with our experts to get unbiased course recommendations.

Schedule a call

Categories

Operations

Description

The course covers all topics relating to both AC motors and their drives. AC motors represent industry's workhorse in all applications. It is no exaggeration to suggest that more than half of the energy consumed worldwide is converted by AC motors into work and these are controlled by drives. Understanding maintenance and troubleshooting procedures of such vital industrial equipment means that reduced downtime and increased productivity for the company. The protection a requirement along with their function and integration with the overall system ensures that such expensive apparatus is well guarded against failures which further offer safety for operations personnel as well.

This course will feature:

  • Understanding types of AC motors and their starting methods
  • Principle of operation of variable speed drives
  • Identification of the various types of variable speed drive
  • Trouble shooting and maintenance of variable speed drives
  • Protection of motors and drives

Course Outline

Day One

AC Motors

  • Discussion - Goals
  • Introduction to magnetic, excitation and the generation of back emf.
  • Fundamentals of rotating machines theory, AC motors and their construction, rotor slip and principles of operation, equivalent circuit, torque-speed characteristics, motoring and regenerative region of operation, efficiency, inertia, horsepower, power factor.
  • Single-phase and three-phase AC motors, types of single-phase motors, split-phase and capacitor.
  • Starting of induction motors and associated techniques, accelerating.
  • Speed control requirements of AC motors and load matching.

Day Two

Drives

  • Basic principles of AC Variable-Speed Drives (VSD's), constant torque region, constant power (extended speed) region, four quadrant operation.
  • Power semiconductors, diode, thyristor (SCR), IGBT, MOSFET, GTO and others.
  • Inverters, voltage-source and current-source, pulse width modulated (PWM) inverters.
  • Two-level pulse width modulated inverter, DC link energy and capacitor sizing, regeneration or dynamic slowdown, dynamic breaking, regeneration.
  • PWM waveforms and analysis, effects of PWM on motor bearings and insulation and life expectancy, volts/Hertz control, start up and operation, dynamics, PWM rectifier inverter systems.
  • Switching transients, harmonics and power factor.
  • AC drive line power factor, effect of AC input on drive operation, switching transients, insulation voltage stress, motor winding voltage distribution, radiated and conducted electromagnetic interferences (EMI), EMI filtering.

Day Three

Troubleshooting and Maintenance of Motors

  • Characteristics of motors, enclosures and cooling methods, application data, design characteristics, insulation of AC motors.
  • Failures in three-phase stator windings, predictive maintenance, motor troubleshooting, diagnostic testing for motors.
  • Troubleshooting and maintenance of AC motors, routine care, dirt and corrosion, lubrication, heat, noise and vibration, insulation.
  • Slow acceleration or refusal to starting of an AC motor, overheating and noise making of the motor, running of bearings at high temperature or making noise.
  • Standards and testing.

Day Four

Troubleshooting and Maintenance of Drives

  • Converter failures, common failure modes, fault current limit, device explosion rating, device application, thyristor failures and testing, identification of failed thyristor and diode, testing of thyristor and diode.
  • Reversing circuits for single-phase and three-phase AC motors, finding open and short-circuit, detection of AC motor symptoms.
  • Preventative maintenance, approaches, guidelines and scheduling, checking, dynamic and static inspections, detecting phase unbalances, loss of phases, and phase reversal.

Day Five

Protection of Motors and Drives

  • Protection of AC motors, requirements, overload protection, currents during starting and stalled point, operation of motors under three-phase unbalanced power supply, motor de-rating due to unbalanced currents, stator and rotor protection, single-phase over-current relays, phase unbalance relays, faults in stator and rotor windings, earth faults, phase-to-phase faults, modern relay design and applications, protection targeting AC synchronous motors, over-voltage and under-frequency protection.
  • Fuses, circuit breakers, magnetic and thermal, overload, eutectic, bimetal and solid-state, others.
  • Motor protection curves, back-up protection.
  • Protection of inverters and electronic converters driving motors.
  • Case studies, selection and design of systems and their protection.

Course Methodology:

A variety of methodologies will be used during the course that includes:

  • (30%) Based on Case Studies
  • (30%) Techniques
  • (30%) Role Play
  • (10%) Concepts
  • Pre-test and Post-test
  • Variety of Learning Methods
  • Lectures
  • Case Studies and Self Questionaires
  • Group Work
  • Discussion
  • Presentation

Who should attend

This course will benefit all levels of professional in an electrical installation. It will enable them to understand operation, maintenance and troubleshooting of AC motors and drives

This course is suitable to a wide range of technical professionals but will greatly benefit:

  • Electricians
  • Electrical supervisors
  • Plant electricians
  • Operations & maintenance engineers, supervisors & technicians
  • Maintenance technicians

Files

Detailed Description
Detailed Description
Show more