• Introduction
• What is in this manual
• What is Caspoc
• User interface
• Introduction
• Starting
• Simulation
• Editing
• Viewing and printing
• Getting Started
• Basic editing
• Simulation in the time domain
• Basic User Interface Topics
• Editing
• Simulation
• Viewing
• Library
• Reports
• Project management
• Circuit and Block Diagram Components
• Introduction
• Cscript and user defined functions
• Component parameters
• Modeling Topics
• Introduction
• Power Electronics
• Semiconductors
• Electrical Machines
• Electrical drives
• Power Systems
• Mechanical Systems
• Thermal Systems
• Magnetic Circuits
• Green Energy
• Coupling to FEM
• Experimenter
• Analog hardware description language
• Embedded C code Export
• Coupling to Spice
• Small Signal Analysis
• Matlab coupling
• Tips and tricks
• Appendices

## Electrical drives and electrical machines operation principles

How does it work? What makes it turn? These are the questions that are discussed in this paragraph. Rather than a lot of boring equations, some simple animations are used to demonstrate the basic principles for each motor type.

### Electrical machines operation principles

In this paragraph the basics of electrical machines are discussed. There are separate paragraphs for each type of electrical machine in Caspoc. For the basic types of the electrical machines, the mathematical models are presented along with their parameters. From the basic electrical machine models, the electrical machine models in the library are derived. Therefore most of the electrical machines in the library are based on the equations presented in these paragraphs. The basic motor types discussed are:

• DC machine, being the basis for the permanent magnet DC, the series, shunt and universal machine.
• AC induction machine (IM)
• Brushless DC machine (BLDCM)
• Permanent Magnet Synchronous Machine (PMSM)
• Switched Reluctance Machine (SRM)
• Stepper motors

### Electrical drive operation principles

Here are simplified examples of basic power semiconductor topologies for motor drives and also basis mechanical models are discussed. For the power electronics topologies, each page contains a schematic and a short description of the circuit operation. A more detailed description of the circuit is in the workbooks on power electronics and electrical drives.

Drives for DC and Universal Motors
• Phase Angle Control
• Chopper
Drives for Three Phase Motors (IM, PMSM, BLDCM PMSM)
• Six Step with SCR input bridge
• Three Phase PWM
• Three Phase with PFC

For the mechanical models, the mathematical models are given along with the parameters for the implementation of the model in Caspoc

Industrial drives
• Planetary gear
• Conveyer
• Spindle
• Elevator
Automotive
• Gear box
• Differential Gear
• Power split for a Hybrid car
Power generation
• Wind turbine