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EC-Motor
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Description
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This eBook with 84 pages shows the basics
of BLDC Motors (brush less direct current). The focus of this eBook are
DC-Motors that are driven an DC-Voltage with the help of frequency
converter. AC-Motors are not in scope of this eBook but we will show how to
operate a AC-Motor on DC-Supply with a frequency converter.
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In the first chapter we describe the
basics of rotary motion of electrical motors like magnetic field, force,
current, voltage and so on. The difference between DC- and AC-motors will be
described.
In the second chapter the classical
DC-motors with brushes will be detailed
analysed. With animations the principal functionality will be shown.
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In the third chapter
the first motor without brushes the stepper motor will be discussed. With
the basics of the stepper motor the really
BLDC-motor (Brush Less Direct Current) will be detailed described in the
chapter four.
In the last
two chapters 5 and 6 the different algorithms for the control
of the BLDC-motor like sine-control,
sensorless-control and also complex algorithms
like FOC (Field Oriented Control) will be
explained. With a lot of animation we try to help you the understanding of
this complex algorithms. No more mathematical explanation as necessary.
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Content |
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Introduction
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Energy consumer
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The electric motor
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Power, speed, torque and efficiency
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Basic function of a electric motor
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Coil, magnetic field, current and
mechanical force
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AC generator and AC motor
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Synchronous and Asynchronous
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Frequency converter
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Types of electrical motors
DC motor with brushes
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Wire loop is rotating
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Change the direction of the DC current
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Brushes respectively collector
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Change the rotation direction
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Transistors as switches
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How much is the idle speed?
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Torque-Speed characteristic
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Linear motor
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Dimensioning a system
Stepper motor
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Introduction
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Types of rotors
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Hybrid stepper motor
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Angle per step
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Types of stator
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Control of unipolar and bipolar
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Only one coil in operation
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Full step operation
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Half step operation
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Vector control
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Micro step method
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Voltage or current control
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Current control
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Stepper motor driver
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Data sheet of a stepper motor
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Dimension s system
Brushless motor (BLDC)
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Introduction
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Replace rotor and stator
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Simple rotating magnetic field
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The rotor do not rotate synchron
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Sensors for position recognition
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Hall sensor
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Mechanical and electrical revolution
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Mechanical and electrical revolution
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One, two or three sensors?
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Wye- or delta connection?
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Torque and the number of pole pairs
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How to drive three coils with a DC voltage
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Electronic switchers
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Closed loop
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Left-Right and starting procedure
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How to change rotation speed
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Change the speed with PWM
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Closed loop control
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Different names for BLDC
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Inside or outside rotating machine
BLDC algorithms
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Sine control
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Trapezoidal and sine commutation
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Sine voltage with PWM signal
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Sine signal in software
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Lead and lag angle delay
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BLDC without sensors
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Induced voltage in the coil
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Zero crossing
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How to measure the induced voltage
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Virtual star-point
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The induced voltage is destroyed
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Start procedure without sensors
Field Oriented Control
- Field Oriented Control
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Current and position measurement
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Transformation in the rotor coordinate system
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Two current controller
- Inverse Clarke-Park Transformation
- State Space Vector
- PWM
with state space vector
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State space vector modulation
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Estimate the rotor position
- PWM
variants
THE END
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eBooks prices
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1
5,5€
2
10,0€
3
10,0€
4
14,5€
5
14,5€
6
19,0€
7
19,0€
8
23,5€
9
23,5€
10
28,0€
11
28,0€
12
32,5€
13
32,5€
14
37,0€
15
37,0€
ALL
41,5€
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CD +1,50€
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for Europe
other countries
please ask
per e-mail
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DC-motor
BLDC
stepper motor
FOC
field oriented control
AC-motor
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