1.0 Introduction to digital
motor control
– Overview of motor technologies evolution and
influence of digital motor control
– Motion system elements : motors, power drivers,
feedback devices, transmission
– Review of analogue and digital control
– DSP Advantages and benefits for
digital motor control
KLM 2006-2007 – Procesoare DSP in actionari electrice 3
Evolution of electrical
machines
Evolution of electrical
machines
• Classical electrical machines
• Impact of power electronics
• Impact of modern digital control
• Future evolution
KLM 2006-2007 – Procesoare DSP in actionari electrice 4
EEvvoolluuttiioonn ooff eelleeccttrriiccaall mmaacchhiinneess ((II))
DC
POWER
CONVERSION
AC
Synchronous
Asynchronous
AC and DC Power Supply
Universal
Series
Compound
Per. Magnet
Shunt
Wound rotor
Squirrel cage
Salient poles
Var. reluctance
Perm. magnet
Classical
electrical
machines
KLM 2006-2007 – Procesoare DSP in actionari electrice 5
The basic functions of
an electrical drive
The basic functions of
an electrical drive
• Electrical Mechanical
Power Power
• Electromechanical power conversion
ELECTRIC
MOTOR
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MMoottoorr tteecchhnnoollooggiieess
1 10 100 1000 10000
DC ironless
DC ironcore
Stepper
DC brushless
AC servo
AC induction
Power
KLM 2006-2007 – Procesoare DSP in actionari electrice 7
PPMM IIrroonn CCoorree BBrruusshh MMoottoorr
Stator
PM
Wound
Rotor
Stator
Housing
N
S
SN
KLM 2006-2007 – Procesoare DSP in actionari electrice 8
PPMM IIrroonnlleessss BBrruusshh MMoottoorr
Wound
Rotor
Stator
Housing
N
S
Stator
Permanent
Magnet
KLM 2006-2007 – Procesoare DSP in actionari electrice 9
Torque-speed characteristic
of a DC Motor
Torque-speed characteristic
of a DC Motor
TORQUE
SPEED
V1
V2 >V1
current
KLM 2006-2007 – Procesoare DSP in actionari electrice 10
AACC SSyynncchhrroonnoouuss MMoottoorr
Motor
Housing
Wound
Stator
Rotor
KLM 2006-2007 – Procesoare DSP in actionari electrice 11
AACC SSyynncchhrroonnoouuss MMoottoorr
ROTOR
FIELD
STATOR
FIELD
KLM 2006-2007 – Procesoare DSP in actionari electrice 12
Torque-speed characteristic of a
synchronous motor
Torque-speed characteristic of a
synchronous motor
TORQUE
SPEED
Tmax
ω0
KLM 2006-2007 – Procesoare DSP in actionari electrice 13
Wound
Stator
Rotor
Motor
Housing
Permanent Magnet AC
Synchronous Motor
Permanent Magnet AC
Synchronous Motor
Permanent
magnets
N
S
KLM 2006-2007 – Procesoare DSP in actionari electrice 14
Wound
Stator
Rotor
Motor
Housing
AACC IInndduuccttiioonn MMoottoorr
Rotor
bars
Prezentare controlului motoarelor electrice cu ajutorul DSP-urilor
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