V/Hz Control using Processor ExpertTargeting Document 56F8300 16-
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56F8300 3-Phase Induction Motor
V/Hz Control using Processor ExpertTargeting Document
56F8300 16-bit Hybrid Controllers
8300ACIMTD Rev. 09/2004
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Document Revision History
Version History Initial release Updating format; adding references 56F8100 family 56F8367EVM Description Change
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
3-Phase Induction Motor Control V/Hz Application Closed Loop
This application demonstrates principal Volts Hertz (V/Hz) control 3-Phase Induction motor closed-loop using 56F8346, 56F8357 56F8367 board, Optoisolation board, 3-phase BLDC high-voltage power stage. Applications developed this demonstration board were designed 56F8100 devices. 56F8300 demonstration board does, however, fully support 56F8100 software development.
Specifications
This application performs principal control 3-phase induction motor using 56F8300 processor. control technique sets speed (rpm magnetic field calculates phase voltage amplitude according V/Hz table. This table private application reflects induction motor parameters (Base Voltage/frequency; Boost Voltage/frequency; Boost Voltage). incremental encoder used derive actual rotor speed. closed-loop system characterized feedback signal (Actual speed), derived from quadrature decoder controlled system. This signal monitors actual behavior system, compared with reference signal (Required Speed). magnitude polarity resulting error signal directly related difference between required actual values controlled variable, which speed motor. error signal amplified controller, controller output makes correction controlled system, reducing error signal. Protection provided against drive faults Overcurrent, Overvoltage, Undervoltage, Overheating. System Outline system designed drive 3-phase Induction Motor (ACIM). application following specifications:
Volt Hertz control technique used ACIM control Closed-loop control Targeted 56F8346, 56F8357 56F8367 Running 3-phase induction motor control development platform variable line voltage 115V 230V (range -15% +10%) Motor mode Generator mode DCBus brake Minimum speed 50rpm Maximum speed 2250rpm input power line 230V Maximum speed 1200rpm input power line 115V Power stage optoisolation board identification
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
Fault protection Manual interface (RUN/STOP switch; UP/DOWN push buttons control; indication) master software remote control interface (speed set-up)
master software remote monitor master software monitor interface (required speed; actual motor speed; drive fault status; DCBus voltage level; identified power stage boards) Application Description Volt Hertz control algorithm calculated Freescale 56F8300 devices. algorithm generates 3-phase signals induction motor inverter according user-required inputs, measured calculated signals. concept ACIM drive incorporates following hardware components:
induction motor-brake 3-phase AC/BLDC high voltage power stage 56F8346, 56F8357 56F8367 board Optoisolation box, which connected between power stage board
induction motor-brake incorporates 3-phase induction motor attached BLDC motor brake. induction motor four poles. incremental position sensor (encoder) coupled motor shaft. detailed motor-brake specifications listed Table 1-1. Table Motor-Brake Specifications
Manufactured Motor Specification Motor Type Pole-Number Nominal Speed Nominal Voltage Nominal Current Brake Specification Brake Type Pole-Number Nominal Speed Nominal Voltage Nominal Current Position Sensor (Encoder) Type Pulses revolution Brno, Czech Republic AM40V 3-Phase Induction Motor 1300rpm 200V 0.88A SG40N 3-Phase BLDC Motor 1500rpm 2.6A Baumer Electric 16.05A 1024-12.5 1024
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
following software tools needed compiling, debugging, loading EVM, remote control monitoring, RUN/STOP Switch UP/DOWN Buttons:
Metrowerks CodeWarrior master software Processor Expert 2.92 DCBus voltage Power module temperature Rotor speed Overvoltage master software error message "Overvoltage fault") Undervoltage master software error message "Undervoltage fault") Overcurrent master software error message "Overcurrent fault") Overheating master software error message "Overheating fault") Wrong hardware master software error message "Wrong used")
Measured quantities include:
faults used drive protection:
3-phase Induction Motor V/Hz application operate modes:
Manual Operating Mode drive controlled RUN/STOP switch (S3). motor speed (S2) DOWN (S1) push buttons (Figure 1-1). application runs motor spinning disabled (i.e., system ready), green user (LED2; Figure will blink. When motor spinning enabled, green user will actual state outputs indicated output LEDs. Overcurrent, Overvoltage Overheating occur, wrong system board identified, green user starts flash quickly master software signals identified type fault. This state exited only application RESET. strongly recommended that inspect entire application locate source fault before starting again. Refer Table application states.
DOWN Buttons
STOP Switch
Figure RUN/STOP Switch UP/DOWN Buttons Daughter Card
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
User LEDs Yellow Green
Output LEDs
Figure USER LEDs Daughter Card
Table Motor Application States
Application State Stopped Running Fault Motor State Stopped Spinning Stopped Green State Blinking frequency Blinking frequency
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
master software (Remote) Operating Mode drive controlled remotely from through communication channel device RS-232 physical interface. drive enabled RUN/STOP switch, which used safely stop application time.
following control actions supported:
Required Speed motor Close/Open loop checking/unchecking "Close Loop" checkbox; Figure Actual Required Speed motor Phase voltage amplitude (related given DCBus voltage) Application mode RUN/STOP DCBus voltage temperature power module Drive Fault status Identified hardware
master software displays following information:
Overcurrent, Overvoltage, Undervoltage Overheating occur, internal fault logic asserted application enters fault state (the user will flash quickly). This state exited only application RESET. strongly recommended that inspect entire application locate source fault before starting again. Project files master software located project directory which uses file small memory model external memory which uses file large memory model external memory .\PC_Master\sdm_pROM-xRAM.pmp, which uses file small memory model internal memory .\PC_Master\ldm_pROM-xRAM.pmp, which uses file large memory model internal memory .\PC_Master\sdm_xROM-xRAM.pmp, which uses file small memory model internal memory .\PC_Master\ldm_xROM-xRAM.pmp, which uses file large memory model internal memory Start master software window's application choose master software project desired master software Operating Mode. Figure shows master software control window internal pROM-xRAM.pmp.
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
Figure Master Software Control Window
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
Hardware Set-up
Figure illustrates hardware set-up 3-phase Induction Motor Control V/Hz Application Closed Loop.
Induction Motor
Motor Power Connector Optoisolation Board Power Supply
Incremental Sensor Connector Daughter Card Controller Board
Power Line Connector
3-Ph, BLDC Power Stage
Serial Cable
Parallel Cable
Figure Set-up 3-phase Induction Motor Control Application Closed Loop correct order phases (Phase Phase Phase induction motor shown Figure
Phase wire Phase white wire Phase black wire
When facing motor shaft, phase order Phase Phase Phase motor shaft should rotate clockwise (i.e., positive direction, positive speed). detailed information, 56F83xx User Manual device being implemented. serial cable needed master software debugging tool only.
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
Jumper Settings
jumper settings, 56F8346 Evaluation Module Hardware User's Manual, 56F8357 Evaluation Module Hardware User's Manual 56F8367 Evaluation Module Hardware User's Manual. execute 3-phase Induction Motor Control V/Hz Application Closed Loop, 56F8300 Daughter Card requires strap settings shown Figure Table 2-1. Note: When running target system stand-alone mode from Flash, 56F8346EVM jumper must configuration disable command converter parallel port interface. 56F8357 56F8367 EVM, jumper must configuration disable command converter parallel port interface.
Figure 56F8300EVM Daughter Card Jumper Reference
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
Jumper Settings
Table 56F8300EVM Daughter Card Jumper Settings
Jumper Group JG10 JG11 JG12 Primary Secondary Phase_IS Over_I Primary Zero-Crossing Encoder Secondary Zero-Crossing Encoder Primary Back-EMF Phase-IS Secondary Back-EMF Phase-IS Fault Monitor Fault Monitor Switch Switch Switch (Run Stop) Comment Connections 1-2, 3-4, 5-6, 7-8, 9-10 2-3, 5-6, 2-3, 5-6, 1-2, 4-5, 1-2, 4-5, 1-2, 3-4, 1-2, 3-4,
Build
build this application, open 3ph_AC_VHz_CL.mcp project file execute Make command, shown Figure 3-1. This will build link 3-phase V/Hz Motor Control application needed Metrowerks Processor Expert libraries.
Figure Execute Make Command
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
Execute
execute 3-phase V/Hz Motor Control application, choose Program/Debug command CodeWarrior IDE, followed command. execute 3-phase V/Hz Motor Control application's internal Flash version, choose Program/Debug command CodeWarrior IDE. When loading finished, 56F8346EVM, jumper disable JTAG port enable boot from internal Flash, then push RESET button. 56F8357 56F8367 EVM, jumper disable JTAG port enable boot from internal Flash, then push RESET button. more help with these commands, refer CodeWarrior tutorial documentation following file, located CodeWarrior installation directory: <.>\CodeWarrior jumper settings, 56F8346 Evaluation Module Hardware User's Manual, 56F8357 Evaluation Module Hardware User's Manual 56F8367 Evaluation Module Hardware User's Manual. Once application running, move RUN/STOP switch position required speed with UP/DOWN push buttons. Pressing UP/DOWN buttons should incrementally increase motor speed until reaches maximum speed. successful, 3-phase Induction motor will spinning. Note: RUN/STOP switch position when application starts, toggle RUN/STOP switch between STOP positions enable motor spinning. This protection feature that prevents motor from starting when application executed from CodeWarrior. should also lighted green LED, which indicates that application running. application stops, green blinks frequency 2Hz.
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
Jumper Settings
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
Jumper Settings
3-Phase Induction Motor V/Hz Control, Rev. Freescale Semiconductor
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