Ppt on pwm control of dc motor

Department of Electrical Engineering Southern Taiwan University Robot and Servo Drive Lab. Assessing pulse-width modulation techniques for brushless dc.

Engineering Southern Taiwan University 18 Assessment of PWM Techniques—Theoretical Analysis and Experimental Confirmation Block diagram of the sensorless experimental system Department of Electrical Engineering Southern Taiwan University 19 Motor specifications Number of poles=8 Rated power=70W V dc= 24 V Rated speed=2,500 rpm Department of Electrical Engineering Southern Taiwan University 20 CH1: high-side control, CH2: low-side control, CH3: terminal voltage CH4: phase current, duty/

Istituto Tecnico Industriale A.Monaco EURLAB Moving a robot simple example program to control a DC-Motor Next - Press the button (left)

the button (left) Istituto Tecnico Industriale A.Monaco EURLAB Moving a robot Motorspeed controlled by Arduino Next - Press the button (left) The speed of a DC motor depends on the voltage (see diagram). Arduino cannot supply variable DC output. Then you must use the Pulse-width modulation (PWM) to simulate a variable DC supply voltage Istituto Tecnico Industriale A.Monaco EURLAB Moving a robot Pulse-with-modulation/

Chapter 4 DC to AC Conversion (INVERTER)

controlled by only change of DC-link voltage (Vdc) 8 I. Voltage Source Inverter (VSI) B. Pulse-Width Modulated VSI (1) Objective of PWM Control of inverter output voltage Reduction of harmonics Disadvantages of PWM Increase of switching losses due to high PWM frequency Reduction of/with three-phase inverter motor-drive Modulation Index, Ratio Modulation Index, Ratio Regular sampling Asymmetric and symmetric regular sampling Bipolar Switching Unipolar switching Bipolar PWM switching: Pulse-width /

Amit Kulshreshtha Moog Inc & Ian Cotton National Grid Senior Lecturer

input voltage based systems, and motor windings may experience repeated applications of even higher than dc link/inverter voltage. It may increase electric motor drive voltages further during 4 quadrant operation in high PWM/dV/dT driven electric drives /instead of trying to contain it for life time of the equipment Avoidance Of Partial Discharge Can be achieved through very careful dielectric design Can reduce fields to a point below which void discharge cannot occur etc. Careful control of manufacturing/

Basics of Motor Drives Prepared By:- Muhammad Atta-ul-Ghaffar

PAPER & BOARD MILLS LTD. Drives used for the control of electric motors speed Drives used for the control of electric motors speed. AC drive used for the controlling of AC motors speed while DC drives used for DC motors. AC drive is also called Variable Frequency Drive. /frequency and voltage control. They provide good efficiency with very little motor heating associated with the other types of drives. Pulse Width Modulated or PWM drives provide the best output current to operate the motor and are becoming /

ME 407: Mechanical Engineering Design

-side” drives the machine and it generates power. ME 407 “Forward MotorControl Electronically-controlled (unidirectional) switch is turned on/off rapidly. Pulse width modulation Desired (average) voltage at the terminals of DC motor is obtained via controlling switching times: where Tp is PWM period (constant) and Td/Tp = d is called duty cycle. ME 407 Forward Motor Control (Cont’d) Mode 1: When S1 is turned off, ia flowing/

Renesas Electronics America Inc. © 2012 Renesas Electronics America Inc. All rights reserved. Sensorless Vector Control and Implementation: Why and How.

Control Lower cost but more complex implementation Current and motor parameters to estimate rotor position Increased reliability Reduced cost of sensor ($3-$20) Less physical space needed Need to estimate θ without sensors Speed /position sensor Speed Calculation Motor PWM Generation PI Controller PI Controller/ filter Negate the effect of DC offset in measured current/voltage Flux Observer Implementation © 2012 Renesas Electronics America Inc. All rights reserved.18 Sensorless Vector Control Loop abc to αβ /

DC Motor Drives Dr. Ahmad Harb.

/increasing the supply voltage of the DC motor will decrease/increase the DC motor speed. The most practical method to control voltage is via the PWM method. General Overview – Direction Basic concept The only way to control direction is change the ‘polarity’ of the DC motor. The ‘polarity’ of the DC motor will determine the direction of current flow hence will determine the direction of rotation of the DC motor. General Overview - Start Starting a DC motor The most easiest way/

Closed Loop Control of Halbach Array Magnetic Levitation System Height By: Kyle Gavelek Victor Panek Christopher Smith Advised by: Dr. Winfred Anakwa Mr.

voltage calculated using difference equation (shown below) Store previous voltage and velocity error values for next iteration Closed Loop Control of Halbach Array Magnetic Levitation System Height 49 Background CLCML Project Planning Motor Model Controller Lookup Table μController Conclusion Functions of PWM: Read duty cycle (DC) % from VALUE Set TH0 and TL0 based on DC % Set P4.4 output Reset on Timer 0 overflow The high and low portions/

1. The Function for SEQUIN DEVICE BOARD - It functions to operate Air Solenoid and Sequin Step Motor. ※ There are two type of B/D, Normal Sequin B/D.

switched and Switching Signal of 24V operates Motor. -PWM Control Signal of U9 No.9(R2_IN_A), U9 No.7(R2_IN__/A), U9 5 번 (R2_IN_B), U9 No.3(R2_IN_/B) makes FET switched and Switching Signal of 24V operates Motor. 1. Option Device 1. SQ3xD 3. Circuit of 4 SEQUIN DEVICE BOARD 4) Circuit of SEQUIN STEP MOTOR #3 Circuit diagramExplanation -U8 74HC595 IC controls PWM signal of U8, U9 of 74HC24 and Air solenoid/

T ORQUE R IPPLE M INIMIZATION IN D IRECT T ORQUE C ONTROL OF B RUSHLESS DC M OTOR 指導老師:龔應時 老師 學 生:黃品翰 日 期: 2014/11/12 Zhenguo Li†, Songfa Zhang*, Shenghai.

corresponds to the upper and lower switch states in a, b, c phase, respectively. D IRECT T ORQUE C ONTROL S YSTEM OF BLDCM - D IRECT TORQUE CONTROL TECHNOLOGY WITH HYSTERESIS AND PWM MODE Due to small value of inductance in brushless DC motor,when one voltage vector is applied in one cycle, large current and torque ripple would be resulted. In this paper, direct torque/

1 Lecture on Lab 6 Lab 7 Lab 8. 2 Lab 6: Open Loop Controller As you learned in lab 5, there are two kinds of control systems: open loop and closed loop.

an open loop DC motor controller. The ‘plant’ to be controlled in this lab is a DC motor. The speed of the motor is controlled by a power FET. The signal to the gate of the FET is the PWM output of the microprocessor (μP). The greater the duty cycle of the PWM output, the faster the motor turns. The circuit is shown in the next slide. 3 Lab 6: Open Loop Controller Motor Speed Control with Power/

INVESTOR PRESENTATION January 2016. 2 Notes on Forward Looking Statements and Non-GAAP Measures Comments in this presentation other than statements of.

nd Inverter AC Output PWM Controller IP Leadership 19 AC-DC Power System Solutions DC-DC LS driver SR PFC Bridge Rectifier Bridge Rectifier Power or Signal Control or Command AC Input DC Output Aux PS PFC Controller / DSP LS driver SR Controller / DSP SR Controller / DSP HVIC PWM/PFM Controller / DSP PWM/PFM Controller / DSP PWM Controller PWM Controller IP Leadership 20 Key Product Verticals Automotive Cloud & Telecom Renewable Energy Lighting Mobile Power & Interface Motor Control Motion Tracking Wall/

㈜ 델타타우코리아 2013.08. Featuring DELTA TAU Data Systems, Inc. Welcome to PMAC UMAC and Board Level Controllers Software Turbo PMAC2 Ultralite with MACRO Peripherals.

5A, 3A, 4.5A, 6A, 8A, 10A, 13A, 20A, 24A 초소형 DC Brush/ Brushless 모터 제어 앰프 12~48V DC Input / 7/12Arms ( 정격 / 최대 ) 소형 로봇 및 의료용 장비에 적합 - Direct PWM Interface – Delta Tau Controller - High Performance Servo Drive Family - Mini-size High-Current DC Servo Drive Yaskawa Mechatrolink-3 (ML-3) Interface ►(Power) UMAC ML-3 Interface/ Matlab/Simulink tm Sinusoidal commutation of AC servo motors Vector control of AC induction motors Digital current-loop closure with direct PWM output Commutation Features Motion Program /

LED Lighting Material PDH Promotion – Aug 2012. Decentralized Front Light Module – LED Lighting Light Levelling Curve Light Stepper Motor Driver Decentralized.

TLD 5095EL TLD 5098EL Power LED Driver TLD 5085EJ Headlight Low Beam Headlight High Beam Turn Indicator Motor Driver / Beam Control LED Driver Supply Communication System Basis Chip TLE 8261E/-2E TLE 8262E/-2E 16/32-bit Microcontroller / lifetime Diagnosis and PWM Capability on Remote Module Usage of LED Nominal Current Direct or Networked Control Applications: Low Beam High Beam DRL Fog Light Applications: Low Beam High Beam DRL Fog Light VBAT (KL30) PWM Body Control ModuleLED Module DC/DC Buck or Boost in/

Ch8 Inverters (converting DC to AC)

dc input voltage. Fig 8-5 A graphical representation of the integration in the Fourier series coefficient. 8-8 The half – bridge Inverter Fig 8-7 A square-wave output or bipolar pulse-width-modulated (PWM) output. The voltage across an open switch is twice the load voltage 8-9 pulse-width-modulated (PWM) output Advantage:Reduced filter requirements to decrease harmonics and the control of/

Space Vector Modulation (SVM)

PWM – Voltage Source Inverter Open loop voltage control AC motor PWM VSI vref Closed loop current-control VSI AC motor PWM iref if/back Pulse Width Modulation PWM – Voltage Source Inverter + vc - + vb - + va - n N Vdc a b c S1 S3 S5 S4 S6 S2 va* vb* Pulse Width Modulation S1, S2, ….S6 vc* PWM – Voltage Source Inverter PWM/V1 is applied for T1, Sector 1 V2 is applied for T2 Zero voltage is applied for the rest of the sampling period, 100 V1 T0 = T  T1 T2 Space Vector Modulation Reference voltage is sampled /

GE - ECM Motor Technology and Troubleshooting

, 598W Condensing Units Uses logic in Circuit Board of outdoor unit Control Board sends a PWM signal to the motor Signal can be read with a “DC” volt meter, with motor at full speed (22º 90º) at PW1, PW2 16-20 VDC with motor connected 20-40 VDC with motor Disconnected In the 38TDA/YDA, the condenser fan motor is controlled by the control board. The sixteen pin header is configured/

PWM Pulse Width Modulation

With appropriate duty cycle, the output will approximate voltage at the desired level Switching noise can be filtered Application: DC Motors Austin Farmer Application: DC Motors Commonly used to control the speed of a DC motor Continuous application of PWM cycle results in average voltage being applied to motor Output speed of motor is proportional to input voltage http://www.youtube.com/watch?v=Lf7JJAAZxEU Used in Lab 3 Application: Telecommunications Austin Farmer/

Electronics Fabrication and Assembly Workshop

mechanism can give exact position control DC Motors – Servo Motors The DC motor is a simple motor that will rotate when powered. Changing the polarity of the power cables will allow you to reverse direction. Adding feedback causes it to become a servo motor. Requires a motor drive for speed control DC Motors use PWM drives External controller and some type of positional feedback can allow for position control Brushed DC Motor RC Servo Motor The RC Servo is an/

Motor Control Lab Using Altera Nano FPGA

and Computer Engineering Oakland University ASEENCS2014 Introduction: We describe a Laboratory exercise to learn control of a small DC motor using Altera FPGA DE0-Nano Board. This board uses Cyclone IV FPGA chip and has ADC (analog/ for high torque start conditions. The NIOS ISR (found in BSP section) made implementation of timing and logging functions easier to support. It was easy to tweak the base frequency of the PWM. The demonstration module is friendly enough to use and suggest to be used for robot /

1 EECS 373 Design of Microprocessor-Based Systems Student Presentations Tianhua Zheng and Jason Shintani Motor control November 27 th, 2012.

, steppers, actuators) H-bridge CEMF H-bridge A set of four switches, mechanical or solid-state, with series pairs in parallel. Used to provide direction control for DC motors. Often found in IC packages. DC brushed motors 15 H-bridge speed control Control signal: PWM –Unlike servos, H-bridges use PWM to regulate power supplied to the motor. –This can be correlated to speed if the mechanical load is know or/

Chapter 16 Feedback control of motors, based on PIDRobotDemo.c

control of motors, based on PIDRobotDemo.c CEG2400 - Microcomputer Systems Reference : www.tic.ac.uk/micromouse/PRESENTATIONS/Heretic.ppt http://www.cse.cuhk.edu.hk/khwong/ceg2400/PIDRobotDemo093.c CEG2400 Ch16: feedback control V4a CEG2400 Ch16: feedback control V4a Objectives Study DC motors Study open-loop and closed-loop control Control methods I) Proportional feedback control II) PID (proportional-integral-derivative) control CEG2400 Ch16: feedback control V4a CEG2400 Ch16: feedback control V4a 1) DC/

ECGR-6185 Advanced Embedded Systems University Of North Carolina at Charlotte A. Srinivas Reddy Stepper/Servo/DC Motors.

; } Typical Connection The Components Regulated power Supply IR2104 Driver Half bridge Circuit using MOSFETs DC motor The operating Conditions of IR2104 FET Driver MOSFET: MOSFETs are high power application reactive component of all the switching components. It is a high speed switching element. Operation The PWM signal generated by a micro – controller is given to IR2104 FET Driver. The IR2104 driver is a high voltage high/

VisSim for Embedded Control System Development Visual Solutions, Inc. 487 Groton Road, Westford MA 01886 USA (800) VISSIM-1 www.vissim.com.

control application –Boots into application on power up –Uses sensors (ADC,QEP,CAP,SPI…) and actuators (PWM, DAC, SPI…) Characteristics of embedded systems –More RAM and flash => $$ –Faster CPU clock =>$$ –MMU? = memory mapping unit – runs Linux, cell phone, PDA etc. Motor controllers/ and highly flexible digital control of: high-power isolated AC-DC converters (30kW parallelable modules) with three-phase PFC Control of high-power DC-AC inverters Control of high-power DC-DC converters Rugged protocols using /

OmniPulse™ DDC Magnetek Training. OmniPulse™ DDC Training The objective of this training is to familiarize service and maintenance personnel with –The.

up Maintenance Troubleshooting –The training course is designed to provide knowledge on: The basics of DC motors and DCCP control The User Manual layout and information OmniPulse™ DDC Training The basic operating theory of the technology Hardware layout, circuit board layout, and circuit board jumper and switch settings/V 0 -V Q 1 P Q 1 N Q 3 P Q 3 N Q 2 P Q 2 N 0 0 Current PWM Power Lowering t 10 - t 11 Current Path Power Lower Power Hoisting T1T2T3 151V125V 10% RPM 122V +26V+3V Deceleration Braking T1T2T3 /

12-sided polygonal voltage space vector structure for induction motor drive By Prof. K. Gopakumar CEDT, Indian Institute of Science, Bangalore.

dc 3111 1.0kV dc 2011 0.366kV dc 1101 0V dc 0100 Consists of three cascaded 2-level inverters. The switch status for different levels of pole voltage are shown below. These are defined with respect to the lower rail of the dc bus. Switch status for different levels of/the vertices from the outer most hexagonal structure is used for PWM control, resulting in highly suppressed 5 th and 7 th order harmonics thereby improving the harmonic profile of the motor current. This leads to the 12-step operation at 50Hz /

Principles of Regenerative Electric-powered Flight J. Philip Barnes 04 April 2014 Update 1 Regenerative Electric-powered Flight J. Philip Barnes 04 Apr.

Regenerative Electric-powered Flight J. Philip Barnes 04 Apr 2014 www.HowFliesTheAlbatross.com Motor Gen Motor Gen Speed Control Speed Control 5 Thermal Updraft Contours Total Energy = Kinetic + Potential Total Energy = Kinetic/motoring or regeneration Low-voltage option: Batteries in parallel, brushed-DC motor-gen Hi-voltage option: Batteries in series, inverter & brushless DCMG Regen M-G Motor "Evaluation of 2004 Toyota Prius," Oakridge National Lab, U.S. Dept. of Energy 233 Vdc in 5 10 15 20 kW PWM/

Department of Electrical Engineering Southern Taiwan University Robot and Servo Drive Lab. 2015/9/18 Pulsewidth Modulation Technique for BLDCM Drives to.

PWM control, and two-phase PWM control is retained during this period. “ ” can be derived from a control loop such as speed control loop, torque control loop, etc. In contrast, turn-on times “ ” and “ ” are used during the commutation period (CP = “High”), and three-phase PWM control/ control of position-sensorless brushless dc motor based on neural network identification,” in Proc. IEEE ICIEA, 2008, pp. 752–757. [5] X. Xiao, Y. Li, M. Zhang, and M. Li, “A novel control strategy for brushless dc motor drive/

Department of Electrical Engineering Southern Taiwan University of Science and Technology Robot and Servo Drive Lab. 2015/12/6 Professor : Ming-Shyan Wang.

, P. Xu, S. Zhou, G. Guo and X. Wu, “Torque ripple control of position- sensorless brushless DC motor based on neural network identification,” in Proc. of IEEE ICIEA, pp. 752-757, 2008. [5] X. Xiao, Y. Li, M. Zhang and M. Li, “A novel control strategy for brushless DC motor drive with low torque ripples,” in Proc. of IEEE IECON, pp.1660-1664, 2005. 2015/12/6 Robot and/

Electronics Computer Club “the geek club” Where you will learn and have fun building interesting electronic gadgets (automation – controllers – robots).

DC Motor DC motor turns continuously in either direction depending on the polarity of the wires Need a L 293D H-Bridge driver chip to control the direction and speed of the turning DC Motor L 293D IC L 293D H-Bridge IC1 – Enable pin for motor 1 2 & 7 – Control for motor 1 3 & 6 – Output to motor 1 9 – Enable pin for motor 2 10 & 15 – Control for motor/.Arduino.ccwww.Arduino.cc Index 7-Segment Display Analog Input Output (PWM) Arduino Programming Bluetooth Breadboard Integrated Circuit (IC) EEPROM High Power /

Nottingham July 2008Control of AC-DC, HF DC-DC and Automotive DC-DC Converters Power Electronics Research Laboratories, Dept of Electrical and Electronic.

explored. ATRP/01/314DigiPowerSave Nottingham July 2008Control of AC-DC, HF DC-DC and Automotive DC-DC Converters Power Electronics Research Laboratories, Dept of Electrical and Electronic Engineering, University College Cork, Ireland Commercialisation II June, 2005, A digital PWM controller for multi- phase dc/dc converters (DigiPowerSave). This patent was allowed to lapse as it was not licensed. June, 2005, A digital PWM controller for multi- phase dc/dc converters (DigiPowerSave). This patent was allowed/

EEEB443 Control & Drives Induction Motor – Vector Control or Field Oriented Control By Dr. Ungku Anisa Ungku Amirulddin Department of Electrical Power.

* fed to the PWM inverter feeding the IM from vsdqs* using the dsqs  abc transformation. Dr. Ungku Anisa, July 2008 EEEB443 - Control & Drives Rotor Flux Orientation Control qs ds d- axis of dq- rotating frame is aligned with r . Hence, Therefore, qr (4) dr (5) r (6) = torque producing current = field producing current Similar to ia & if in DC motor Decoupled torque and flux/

Enabling Objective 1.3 Describe the Design of the Magnetek Impulse VG+ series 3 Variable Frequency Drive Controller.

motor, a 3 phase output is developed and delivered to the motor. IMPULSE ® VG+ Series 3 Theory of Operation IMPULSE ® Drive Flux Vector “A Vector Drive uses feedback of various real world information (encoder and CT’s) to further modify the PWM pattern to maintain more precise control of/ Heavy Duty Industrial Type Output Resolution – 1,024 Pulses per Revolution 12V DC Differential Line Driver Output Connected to Motor Shaft to Provide Zero Backlash Shielded Cable IMPULSE ® Drive IMPULSEVG+ Series 3/

Active Suspension System Test Platform Bradley University Department of Electrical & Computer Engineering By: Craig Chan & Olusegun Michael Abidoye Advisor:

Design and build power electronics to drive a 115 Volt DC motor Microcontroller isolation circuitry Microcontroller isolation circuitry H-Bridge design H-Bridge design Control algorithm Control algorithm Testing and debugging Testing and debugging Mike Mike Microcontroller based feedback control system Microcontroller based feedback control system Control Algorithm Control Algorithm A/D converter A/D converter PWM (Timer 2) PWM (Timer 2) Testing and debugging Testing and debugging Functional Description/

ECE Electric Drives Topic 16: Control of SPM Synchronous

as brushless dc motors (BLDM). Concentrated, full-pitch stator windings in these motors are used to induce 3 trapezoidal voltage waves at the motor terminals. Thus a 3 inverter is required to drive these motors as shown in the next slide. Control of BLDM Drives (cont’d) The inverter can operate in two modes: 1) 2/3 angle switch-on mode 2) Voltage and current control PWM mode Control of BLDM/

Preliminary Project Plan P08202/5/6/7/8 – RP1 Motor Module

disassembly for component replacement  Should be able to access any component within 3 minutes of disassembly Cont… Design should be powered by DC power source Communications specification: Minimum Criteria: All team designs should accept PWM signals to control motors Impressive: Each motor module must be addressable and able to "talk" with a central processor to control motors Design should minimize weight  0.5 LB combined drive and steering/

dSPACE DS1103 Control Workstation Tutorial and DC Motor Speed Control

: Input from DS1103 sent through Transistor or H-Bridge. Optical Encoder System: May have additional components between output of optical encoder and DS1103 A/D Input. CLP1103 LED/Connector Panel: A/D, D/A, PWM I/O to/from DS1103. Current Controller Requirements The DC motor speed controller designed/simulated using Simulink and dSPACE blocksets, Matlab-to-DSP interface libraries, the Real-Time Interface to Simulink/

Dept. of Electrical and Computer Engineering

. Precise speed and torque control. 0.05 per cent speed regulation. Less than 3% torque linearity of the full speed range. 100% torque at 0 rpm. Advantages of DC Motors Moderate PWM losses. Sensorless operation. Low cost (only in case of ‘brushless dc trapezoidal’ motors). Limitations of DC Motors ‘Brushless DC Servo motors’ have High PWM losses. High radial forces on motor. Limited over-speed range. Higher torque ripple. In case of ‘Brushed DC motors’, due to wear and/

Actuators Instructor: Shuvra Das Mechanical Engineering Dept. University of Detroit Mercy.

. A DC servo motor consists of a motor, gear train, potentiometer, limit stops, control circuit. Three wires: ground, power, control signal. The control signal is in the form of a pulse width signal. As long as the control line keeps receiving the signal the servo holds the position of the shaft. With the change of the coded signal the position of the shaft changes. Servo motors Input is pulse width modulated signal (PWM) Pulse/

Department of Energy Conversion, Universiti Teknologi Malaysia

+  q vtri Vdc q vc q Vdc Pulse width modulator vc Modeling and Control of Electrical Drives Current controlled converters in DC Drives - PI-based i*a + PI PWM PWM Converter i*b + PI PWM PWM i*c + PI PWM PWM Sinusoidal PWM Motor Interactions between phases  only require 2 controllers Tracking error Modeling and Control of Electrical Drives Current controlled converters in DC Drives - PI-based Perform the 3-phase to 2-phase transformation - only two/


+  q vtri Vdc q vc q Vdc Pulse width modulator vc Modeling and Control of Electrical Drives Current controlled converters in DC Drives - PI-based i*a + PI PWM PWM Converter i*b + PI PWM PWM i*c + PI PWM PWM Sinusoidal PWM Motor Interactions between phases  only require 2 controllers Tracking error Modeling and Control of Electrical Drives Current controlled converters in DC Drives - PI-based Perform the 3-phase to 2-phase transformation - only two/

Microcontroller Hands-on Workshop #3 Ahmad Manshad New Mexico State University Institute of Electrical and Electronics Engineers November 7, 2009.

to 255.  Use one of the PWM pins (3, 5, 6, 9, 10, or 11). 12 Applications of Pulse Width Modulation Dimming an LED Generating audio signals. Generating a modulated signal, for example to drive an infrared LED for a remote control. Providing variable speed control for motors. 13 Motors Electromechanical device that converts electrical energy to mechanical energy 14 Motors! DC Motor Servo Motors Stepper Motor 15 DC Motor Pros Simple & cheap (only/

Www.ee.ntou.edu.tw Department of Electrical Engineering, National Taiwan Ocean University Pulse Width Modulation 3/19/2015 Richard Kuo Assistant Professor.

output ► Lab. Keypad to select tone to speaker (smpl_PWM_Tone_Keypad) ► Lab. using PWM to generate music (smpl_PWM_Music) ► Exercise : PWM control DC Servo Motor ► Lab. PWM control angular DC servo (smpl_PWM_SG5010) ► Lab. PWM control rotatory DC servo (smpl_PWM_DS04) ► Exercise : PWM DeadZone ► Lab. PWM control DeadZone of output waveform ► Homework : Electrotherapy Device ► Homework : Ultrasonic Directive Speaker Department of Electrical Engineering, National Taiwan Ocean University www.ee.ntou.edu.tw/

TRACTION MOTOR : CONTROL AND APPLICATIONS. Content : Introduction Requirements of a traction system Control of DC motors Electronic Speed Control Methods.

main Disadvantages of PWM circuits are the added complexity and the possibility of generating radio frequency interference. It can give speed below the full speed, not above. It cannot be used for fast controlling of speed. THYRISTOR CONTROL Schematic of AC Electric Locomotive Power System with Thyristor Control and Separately Excited DC Motors DC Choppers Thyristor Control Circuit for DC Supply to DC Motors AC Locomotives with DC Drives Schematic of AC locomotive with Tap Changer Control of Transformer/

Topic 8: Simulation of Voltage-Fed Converters for AC Drives Spring 2004 ECE 8830 - Electric Drives.

Control of AC Drives, Univ. of Wisconsin Course Notes April 2002 Switching Functions for ABC Pole Voltages and DC bus Current Ref: G. Venkataraman, Dynamics and Control of AC Drives, Univ. of Wisconsin Course Notes April 2002 Phase Currents In the absence of a neutral connection, the phase currents in the windings of the induction motor/W. Novotny and T.A. Lipo, “Vector Control and Dynamics of AC Drives” d,q Model for PWM Operation In a PWM inverter the various modulation techniques will alter the switching /

1 An FPGA-Based Novel Digital PWM Control Scheme for BLDC Motor Drives 學生 : 林哲偉 學號 :M9920110 指導教授 : 龔應時 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL.

Drives 學生 : 林哲偉 學號 :M9920110 指導教授 : 龔應時 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 56, NO. 8, AUGUST 2009 2 Outline Abstract INTRODUCTION BRUSHLESS DC MOTOR DRIVE STRATEGIES DIGITAL PWM CONTROL OF BLDC DRIVES CONTROLLER DESIGN DESCRIPTION OF EXPERIMENTAL SETUP SIMULATION RESULTS AND EXPERIMENTAL VERIFICATION CONCLUSION 3 Abstract Development of advanced motor drives has yielded increases in efficiency and reliability. Residential and commercial appliances such as refrigerators and air conditioning/

1 Speed Control With Low Armature Loss for Very Small Sensorless Brushed DC Motors Jonathan Scott, Senior Member, IEEE, John McLeish, and W. Howell Round,

,two commercially available EMF-sensing proportional-only PWM feedback controllers,and an EMF-sensing controller that can implement proportional–integral–derivative (PID) control. This mechanical setup is used to assess the regulation R of the various controllers,on motor 2. Fig. 9 shows the results. 25 Fig. 9. Performance of various controller methods applied to motor 2, a highquality PM BDC motor with an armature of approximately 0.3 cm 3. 26/


To limit the current – protect the switching devices Motor Example of current control in cascade control structure converter speed controller position controller  + ** 1/s + +  current controller T*T* **   k T KtKt Current-Controlled Converters ON-OFF ControllersSeparated PWM block Hysteresis Non-linear controllers PI controllers Linear controllers Current-Controlled Converters PI-based (linear controller) v tri V dc q vcvc q Pulse width modulator vcvc V dc Pulse width modulator vcvc i ref PI +  q/

Review of How Motor Works Motor converts Electrical Energy to Rotating Mechanical Energy Coils placement in motor creates rotating, magnetic field in stator.

controls voltage & frequency simultaneously to maintain constant volts-per-hertz relationship keeping current flow constant. AC Drive DC Bus Rectifier - Converts AC line voltage to Pulsating DC voltage Inverter - Changes fixed DC to adjustable AC - Alters the Frequency of PWM waveform Intermediate Circuit (DC BUS) - Filters the pulsating DC to fixed DC voltage AC Power Supply RectifierInverter M Sine Weighted PWM Bus Voltage Level Sine Weighted PWM PWM WAVEFORM PWM/Motor E GV3000/SE Sensorless Vector Control/

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