Introduction single-phase induction motor brushless motor designe

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Introduction single-phase induction motor brushless motor designe

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Monophase Motor Control ST52 with Noiseless Driver
Introduction
single-phase induction motor brushless motor designed either with single stator coil plus "shaded pole" coil, with stator coils phase-shift capacitor. rotor usually made aluminum squirrel cage. Speed controlled either varying motor voltage stator frequency. Typical Parameters
Voltage: Motor Power: 2000 Speed Range: 3000 Features: Robust, start torque
monophase motors among most diffused industrial Home Appliances applications. factors their diffusion are: system cost efficiency Most commonly diffused motors control solutions today based Triac Drivers Inverter Drivers ST52 proposed either both solutions noiseless driver.
STFive Applications
Major Applications
Washing Machine Fans Refrigerators Compressor Heating, Ventilation, Conditioning Window door openers Domestic water pumps
STFive Applications
Motor driver topologies
TRIAC solution
Phase Angle Partialization
Vsource
motor
control
Controlled Phase Angle Vsource
Monophase Motor
Advantages
cost
Drawbacks
High harmonics distortion linear regulation: Voltage value linear with phase angle
STFive Applications
Motor driver topologies
Inverter solution
Step Modulation
mains Filter
DC/AC
conversion
AC/DC
conversion
Chopped Sinus
Vline
MOTOR
duty-cycle
Drawbacks
four switches Cross conduction problems Complex digital modulation High distortion line current often required) AC/DC DC/AC conversion High side drivers required High system cost
Advantages
Variable frequency regulation Variable speed regulation
STFive Applications
Motor driver topologies (3):
Noiseless Driver solution
induction motor driven high frequency mode innovative single switch topology, which delivers silent cost effective variable speed drive. speed controlled motor voltage: power switch runs mode duty cycle changes linearly control speed versus torque.
Modulation
mains
line informations
Active Bi-directional free-wheeling
motor Bi-directional switch
reference voltage other inputs
ST52 Micro
current sensing modulation
STFive Applications
Motor Driver Circuit
Current during
When
Vbe(sat)
Vbe(sat)
220Vac
line current during positive grid voltage
CON1
ST52 Micro
Patented Solution
more information AN1255, AN1221
STFive Applications
Monophase Motor: driver Board
Details contact reference ST52 Motor Control page (http:\\mcu.st.com)
STFive Applications
Motor Results
with proposed noiseless driver modulation
Motor Current
Harmonic Content Motor Current load
IGBT Voltage
Time
2mS/Div.
Hz/Div.
STFive Applications
Motor Results
with Triac driver phase angle partialization
Motor Current
load Harmonic Content Motor Current
Time
2mS/Div.
Comparing Harmonics Power Content between solutions
(Watt) (Watt) (Watt)
Hz/Div.
Triac Solution Proposed Solution
STFive Applications
Advantages proposed driver solution with ST52
third higher harmonic content mains current Sinusoidal current motor Absence torque pulsation phase partialization control case Vibration reduction structures (motor mechanical support) Linear regulation power load need AC-DC conversion cost system with respect inverter topology Control algorithms speed regulation easily designed using Fuzzy Logic Prototyping phase shortened thanks software development tool FUZZYSTUDIO
This solution used from motors loads
STFive Applications

Introduction single-phase induction motor brushless motor designe

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