Variable Frequency AC Source - Bradley

Variable Frequency AC Source - Bradley

Variable Frequency AC Source Students: Kevin Lemke Matthew Pasternak Advisor: Steven D. Gutschlag 1

Project Goals Variable Frequency AC Source (VFACS) Capable of delivering 208 Vrms and 5 A (35.5V rms for initial testing) Frequency range from 0 to 60 Hz 2

High Level System Block Diagram 3 PWM Generation Controller Produces PWM signals for the Gate Drive Circuitry Use a LabVIEW based cDAQ controller from National

Instruments Able to control both single phase and three phase systems 4 PWM Generation Controller

5 PWM Generation Controller Produce TTL level PWM signals Produce waveforms representative of sine waves from 0-60 Hz Produce waveforms following proper V/Hz ratio of 0.5892

6 Gate Drive Circuitry High speed signal isolator and driver Use optical isolators and gate driver chips to isolate and amplify signal to the Inverter Optical isolators and gate drivers chosen for speed and

robustness 7 Gate Drive Circuitry 8

Gate Drive Circuitry Along with inverter, capable of switching at 1% duty cycle of 15 kHz switching frequency without clipping Optical Isolator 6N137 Optocoupler Isolate cDAQ outputs from Inverter, Filter, and Load Gate Driver

IR-2110 Amplify PWM from TTL to +15V 2A level adequate for driving the Inverter 9 Gate Drive Circuitry Changes Replaced IR2110/6n137 with

HCPL3120 Robustness Real-estate Simplicity Verify that this chip would meet specifications Speed capability

Drive capability www.avagotech.com/docs/AV02-0161EN Inverter PWM Signal Amplifier for AC machine application Use IGBT pairs and DC rails to amplify PWM signal IGBTs used for high voltage capabilities and availability

Single- and three-phase configurations 11 Inverter 12

Inverter 13 Inverter Single-phase Inverter Fairchild FMG2G75US60 IGBT Pair Each IGBT will receive one PWM signal

Output one dual-sided PWM signal representing the necessary sine wave Have 0 and 100 VDC rails capable of providing 15 A Three-phase Inverter Three single-phase inverters Single-phase inputs 120 out of phase from any other input Capable of 5 A per phase

14 Inverter Updates IRF520N MOSFETS Used for testing of single phase inverter Current limiting resistor system protection IGBTs will be used when filter, controller, and load are designed and built

Filter Used to extract sine wave encoded in PWM signal Three identical filters used (one for each phase) LC filter 16

Filter 17 Filter LC Filter Components rated for 400V and 15A Output sinusoidal waveform extracted from PWM signal

18 Load Overall system output used for testing Initially resistive-inductive (RL) for both single- and three-phase systems Final tests will be performed on a three-phase motor

Shall be able to draw the rated power from the system 19 Lab Work Opto-coupler Simulation (6N137) Gate Driver and Optocoupler construction

HCPL3120 Gate Driver construction Single phase, single side inverter test With IRF520N MOSFET Lab Work Basic cDAQ Interface

Analog Input Digital Output (TTL) Lab Work Lab Work Basic PWM Generation Controller in LabVIEW Point by Point vs Waveform Signals

Lab Work Equipment & Parts List LabVIEW Student Edition NI-cDAQ-9174 Data Acquisition Chassis NI-9401 Digital I/O NI-9221 Analog Input Module

NI-9211 Thermal Couple IR2110/2113 6N137 Opto-coupler HCPL3120 Gate Driver* IRF520 MOSFET* FMG2G75US60 IGBT Pair with anti-parallel diodes Sources and Scopes available in Power Lab 25

Schedule Schedule Week 1 2 3 4

5 6 7 8 9 10 11 12

13 14 Date 1/27/2013 2/3/2013 2/10/2013 2/17/2013

2/24/2013 3/3/2013 3/10/2013 3/17/2013 3/24/2013 3/31/2013 4/7/2013 4/14/2013

4/21/2013 4/28/2013 Task LabVIEW Tutorials Build & test single phase optical isolator Build & test single phase gate driver and inverter Interfacing LabVIEW with NI cDAQ

Basic LabVIEW controller design LC filter design & single phase resistive/inductive load selection Apply LC filter and load to single phase VFACS Controller tuning/modification with voltage feedback Performance testing of single phase VFACS Re-evaluation of schedule/evaluation of implementing three-phase VFACS DC to AC source conversion design DC to AC source conversion building and testing

Final system testing and analysis Oral Presentation Preparation/ Final Project Report Questions? 27 Pictures

28 Datasheets http://www.fairchildsemi.com/ds/6N/6N137.pdf http:// www.daedalus.ei.tum.de/attachments/article/257/IR2110_IR2110S_I R2113_IR2113S.pdf

http:// pdf.datasheetcatalog.com/datasheet/fairchild/FMG2G75US60.pdf http:// www.datasheetcatalog.com/datasheets_pdf/H/C/P/L/HCPL-3120.sht ml https://www.futurlec.com/Transistors/IRF520.shtml 29

Flow Chart 30 RLC Filter Design Equations 1 Vo LC

Vi s 2 R s 1 L LC w0 1 LC

F b 1 0 Q 2

R C 2 L 31 RLC Filter Response

32

Recently Viewed Presentations

  • CS1102 Lecture Slides - CityU CS

    CS1102 Lecture Slides - CityU CS

    Course General Info (2) Online Resources. Textbook CourseMate(access code will be given when purchasing the book) access.cengage.com. Textbook companion site (free)
  • The Agricultural Revolution

    The Agricultural Revolution

    The Low Countries . The agricultural revolution has its roots in the Low Countries, as Holland's middle-class society was ahead of its time in the seventeenth century.. By this time, the Low Countries were home to enclosed fields, crop rotation,...
  • How Trade Unions help learning at work

    How Trade Unions help learning at work

    Unionlearn - the Education Dept of the TUC. Has about 30 staff and an income of £15M. In 2015 it helped 240,000 learners at work. Union members twice as likely to be trained. Distributed £180M to help 1.4M workers in...
  • MEMBANGUN TIM KERJA YANG KUAT Triarko Nurlambang -UI

    MEMBANGUN TIM KERJA YANG KUAT Triarko Nurlambang -UI

    MEMBANGUN TIM KERJA YANG KUAT Triarko Nurlambang -UI untuk Bank Indonesia Tradeoffs " Decision with multiple objectives can not be resolved (ditetapkan) by focusing on any one objective" Hammond, 1999 Bandingkan konsekuensi dan alternatif kemudian tetapkan atau kurangi sejumlah pilihan...
  • Loops and Simple Functions

    Loops and Simple Functions

    General pseudocode for sentinel loop: read the first value. while value is not the sentinel: process the value. read the next value. Watch for infinite loops. Exercise. Write a program that reads a positive integer from the user, and then...
  • PART VIII: MONETARY MODELS OF EXCHANGE RATES LECTURE

    PART VIII: MONETARY MODELS OF EXCHANGE RATES LECTURE

    Recap of interest rate parity conditions. Covered interest parityacross countries. Uncovered interest parity. Real interest parity. i - i* offshore = fd. i - i* = Δ. s. e. i - π. e = i* - π* e. holds to...
  • ELA College Board Module 2 Module 2: Analyzing

    ELA College Board Module 2 Module 2: Analyzing

    Tone and Characterization in Paragraphs 12-15 In pairs, finish the chapter Underline or circle unfamiliar words that seem important to the text, and work together to determine word meanings. Remember you can use context clues, morphology, or dictionaries. Write a...
  • The Society of Women Engineers Welcome Back to

    The Society of Women Engineers Welcome Back to

    This box is stuck on your rump, and you have to shake all the balls out in one minute or less in order to win. When the one-minute timer begins, the player then starts jumping and wiggling and shaking in...