Webinar on OSHA Violations

Life after an OSHA Citation: Turning a Black Mark into a Better Workplace

OSHA citations happen: the agency conducted 35,000 inspections in 2015 and cited 65,000 violations for a range of common hazards. The facilities that come back strongest from a citation are the ones that go beyond hazard correction to establish a culture of safe work practices.

AC-DC Drives

AC-DC Drives

This maintenance training course covers electromechanical systems, their terminology, and how the components function together. It examines the magnetic and electromagnetic properties of dc motor components, motor operation and classification, the creation of mechanical energy by ac motors and how electromagnetism and induction produce rotation. The online course also discusses methods for stopping motors, the components of a brushless servo motor, and speed torque curves. It concludes with coverage of output power, the control section, and I/O servo drives. AC-DC Drives is only available in online format.


TPC Training Systems is authorized by IACET to offer 0.4 CEUs for this program.

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  • Online Course & Test $85.00

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Lesson 1 - Fundamentals of AC-DC Drives

This course explains electromechanical systems. It begins by looking at their related terminology. It goes on to explain how the various components function together.


ST-Overview, ST-Eletromechanical System, ST-Voltage, ST-Current, ST-Frequency, ST-Sine Wave, ST-Resistance, ESC-Overview, ESC-Power Source, ESC-Controller, ESC-Drive, ESC-Motor, ESC-Feedback Loops, ESC-Coupling, ESC-Machine, HTS-Overview, HTS-Horsepower, HTS-Torque, HTS-Speed, LIC-Overview, LIC-Constant Torque Loads, LIC-Constant Horsepower, LIC-Variable Torque Loads

Lesson 2 - DC Motors

Examines the magnetic and electromagnetic properties of dc motor components. The influences that affect motor operation and classification are later discussed.


ME, ME-Magnetism, ME-Electromagnetism, DCMT, DCMT-Armature Current, DCMT-Base Speed, DCMT-Commutation, DCMT-Field Current, DCMT-Flux, DCMO, DCMO-Power Electromagnetism, DCMC, DCMC-Series Wound Motor, DCMC-Shunt Wound Motor, DCMC-Compound Motor, DCMC-Stabilized Shunt Motor

Lesson 3 - AC Motors

Covers how ac motors create mechanical energy. Discusses how electromagnetism and induction produce rotation by becoming familiar with the related terms and concepts. Explains how motors are classified by NEMA.


AC Motor Hardware, OP1, OP1-Breakdown Torque, OP1-Cogging, OP1-Slip, OP1-Starting Current, OP1-Starting Torque, OP2-Induction, OP2-Induction Magnetism, OP2-Motoring Action, OP2-Slip Calculation, OP2-Torque Production, NEMA, NEMA-Design A, NEMA-Design B, NEMA-Design C, NEMA-Design D

Lesson 4 - DC Drives

Covers the control section, armature bridge, and dc drive controls. The various components of each are examined and explained.


Control Section, Power Section, AB, AB-DC Contractor, AB-AC DC Conversion, AB-Field Bridge, DCDF, DCDF-Power Conversion

Lesson 5 - AC Drives

Covers the two main sections of AC drives: control and power. The control section explains how a series of control boards performs the drive's control functions. Under power, DC conversion, filters, and inverters are discussed.


Hardware, Control Section, PS-Overview, PS-DC Converter Section, PS-Filter, PS-Inverter, PS-Driver Inverter Classification, AC Drive Functions, PC-Overview, PC-Power Conversion Path, PC-AC DC Conversions, PC-Voltage Spike Smoothing, PC-DC AC Inversion

Lesson 6 - AC-DC Braking Methods

Discusses the three methods for stopping motors: coasting, mechanical braking, and electrical braking. Other types of ac motor braking are also explained.


Coasting, Mechanical Braking, Electrical Braking, Dynamic Braking, Regenerative Braking, Deceleration Modes

Lesson 7 - Brushless DC Motors

The components of a brushless servo motor are discussed. The course goes on to describe speed torque curves. It concludes by examining how to select a brushless dc motor.

MC-Overview, MC-Rotor, MC-Stator, MC-Feedback. MC-Holding Brake, COM-DC Motor Commutation, COM-Brushless Commutation, MP-Motor Specifications, MP-Speed Torque Curves, Speed/Torque Curves 1, Speed/Torque Curves 2, Selecting, Constant Torque, Distance in Motor Rev, Maximum Rotational Speed, Angular Acceleration, Load Component Inertia, Motors Rotor Inertia, Load to Motor Inertia, Acceleration Deceleration, Peak Torque, RMS Torque, PIS-Bus Discharge

Lesson 8 - Brushless Servo Valves

The output power, control section, and I/O servo drives are discussed. The function of various components for each are explained.


POS-Overview, POS-Transistor Types, POS-Three Phase Bridge, POS-PWM, CS-Commutation, CS-Loop Closure, CS-PID, PID1, PID2, Digital IO, Analog IO, IO-Fieldbus, Power Cables, Servo Actuators

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