MINISTRY OF EDUCATION AND TRAINING HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION GRADUATION THESIS MAJOR: AUTOMOTIVE ENGINEERING TECHNOLOGY RESEARCH CONTROLLER AND BENCHMARK TESTING FOR REGENERATIVE BRAKING USING 3- PHASE INDUCTION MOTOR INSTRUCTOR: LÊ THANH PHÚC, PhD. STUDENT: VŨ MINH HIẾU LÊ MINH NHẤT SKL010729 Ho Chi Minh City, July 2023 HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION FACULTY FOR HIGH QUALITY TRAINING GRADUATION PROJECT (UPPERCASE, bold, 16pt. Times New Roman) RESEARCH CONTROLLER AND BENCHMARK TESTING FOR REGENERATIVE BRAKING USING 3- PHASE INDUCTION MOTOR VŨ MINH HIẾU ERCASE, bold, 14pt. Times New Roman) Student ID: 19145179 (bold, 14pt.
Times New Roman) LÊ MINH NHẤT ame, UPPERCASE, bold, 14pt. Times New Roman) Student ID: 19144056 (bold, 14pt. Times New Roman) Major: AUTOMOTIVE ENGINEER TECHNOLOGY (UPPERCASE, bold, 14pt. Times New Roman) Advisor: LÊ THANH PHÚC, PhD.
Ho Chi Minh City, July 2023 APPENDIX 3: (Graduation Project Assignment) i THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- Ho Chi Minh City, July, 2023 GRADUATION PROJECT ASSIGNMENT Student name: Vũ Minh Hiếu Student ID: 19145179 Student name: Lê Minh Nhất Student ID: 19144056 Major: Automotive Engineer Technology Class: 19145CLA Advisor: Lê Thanh Phúc, PhD. Phone number: _________________ Date of assignment: _____________________ Date of submission: _____________ 1. Project title: Research controller and benchmark testing for regenerative braking using 3-phase induction motor 2. Initial materials provided by the advisor: ___________________________________ 3.
Content of the project: _________________________________________________ 4. Final product: ________________________________________________________ CHAIR OF THE PROGRAM ADVISOR (Sign with full name) (Sign with full name) ii APPENDIX 4: (Advisor’s Evaluation sheet) THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- Ho Chi Minh City, July, 2023 ADVISOR’S EVALUATION SHEET Student name: Vũ Minh Hiếu Student ID: 19145179 Student name: Lê Minh Nhất Student ID: 19144056 Major: Automotive Engineer Technology Project title: Research controller and benchmark testing for regenerative braking using 3- phase induction motor. Advisor: Lê Thanh Phúc, PhD. Content of the project:.
Approval for oral defense? (Approved or denied) .) Ho Chi Minh City, July, 2023 ADVISOR (Sign with full name) iii APPENDIX 5: (Pre-Defense Evaluation sheet) THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- Ho Chi Minh City, July, 2023 PRE-DEFENSE EVALUATION SHEET Student name: Vũ Minh Hiếu Student ID: 19145179 Student name: Lê Minh Nhất Student ID: 19144056 Major: Automotive Engineer Technology Project title: Research controller and benchmark testing for regenerative braking using 3-phase induction motor. Name of Reviewer:. Content and workload of the project. Approval for oral defense? (Approved or denied) .) Ho Chi Minh City, July, 2023 REVIEWER (Sign with full name) iv APPENDIX 6: (Evaluation sheet of Defense Committee Member) THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- EVALUATION SHEET OF DEFENSE COMMITTEE MEMBER Student name: Vũ Minh Hiếu Student ID: 19145179 Student name: Lê Minh Nhất Student ID: 19144056 Major: Automotive Engineer Technology Project title: Research controller and benchmark testing for regenerative braking using 3- phase induction motor.
Name of Defense Committee Member:. Content and workload of the project .) Ho Chi Minh City, July, 2023 COMMITTEE MEMBER (Sign with full name) v Acknowledgements We would like to express our sincere thanks to the Faculty of High Quality Training - Ho Chi Minh City University of Technology and Education with the consent of the instructor PhD. Le Thanh Phuc who created conditions for us to have the opportunity to study and research through the project. In the process of researching and implementing the project, in addition to the team's efforts, we have received enthusiastic help from family, teachers and friends.
In addition, we would like to express our sincere thanks to Master Nguyen Le Khuong Duy for supporting the team in the process of implementing the project and creating conditions for the group to have access to a full learning environment. equipment and facilities to support research. With the efforts of the research team, certain results have been achieved. However, limitations and shortcomings cannot be avoided.
To overcome these problems, we are looking forward to receiving suggestions from teachers and friends for the project to achieve better results. We sincerely thank you! 1 Table of Contents Acknowledgements. 1 Table of Contents. 2 List of acronyms.
4 List of Figures. 5 List of Tables. Reason to choose the topic. Research subjects and its range.
Limitation of project. Content of researching. Method of researching. Structure of report .10 Chapter 2: LITERATURE REVIEW.
What is Regenerative Braking System?. Pros and Cons. EMF and Counter-EMF. Three-phase Induction Motor.
Mechanical properties of Induction Motor. Braking control of asynchronous electric motor. How to measure power of electric motor?. Load generator support frame and test data collector .1 Load generator support frame.
Test data collector. Pulse Width Modulation (PWM). Pulse Width Modulation .35 Chapter 3: SYSTEM DESIGN. Inverter circuit design.
Isolation using opto. Power semiconductor device. IR2136 power semiconductor lock driver IC. The schematic diagram of the control circuit.
Design of a circuit that recovers energy when generating a load. Load generator control method. Data collection method from load generator .50 Chapter 4: BENCHMARK TESTING .57 Chapter 5: EXPERIMENT RESULTS AND ANALYSIS. Result of control signal testing.
Load creation results .60 Chapter 6: CONCLUSION AND RECOMMENDATIONS. 68 Code for Controller .68 Code for Weightning Object .122 Code for Encoder Module.124 3 List of acronyms PWM Pulse Width Modulation VFD Variable Frequency Drives EMF Electromotive Force CEMF Counter Electromotive Force EV Electric Vehicle HEV Hybrid Electric Vehicle DTC Direct Torque Control SPWM Sine Pulse Width Modulation IGBT Insulated Gate Bipolar Transistor PSC Prescaler IC Integrated Circuit ADC Analogue Digital Converter CAN Controller Area Network 4 List of Figures In chapter 2: Figure 2. 1: Current distribution and dynamic force in a 3-phase winding. 2: 3-phase rotating magnetic field.
3: Alternative diagram for single phase on asynchronous motor. 4: Graph of electromechanical characteristics. 5: Asynchronous motor characteristic curve graph. 6: Graph of mechanical characteristics in regenerative braking mode.
7: Graph of mechanical properties affected by voltage. 8: Graph of changing mechanical properties affected by impedance and stator. 9: Graph of mechanical properties changed by impedance and rotor resistance. 10: Graph of mechanical properties affected by control frequency.
11: Method of determining moment. 12: Graph form when measuring engine power. 16: Formula of Resistant in loadcell. 18: Duty cycle represented by digital signal .37 In chapter 3: Figure 3.
1: HCPL2631 isolating opto components. 2: Structural block of HCPL2631 isolation and open-drain output configuration. 4: IR2136 drive IC. 5: The schematic diagram of the control circuit using isolation.
6: The schematic diagram of the power semiconductor locking circuit. 7: Principle diagram of inverter circuit using power semiconductor switch. 8: Energy recovery rectifier circuit. 9: Load generator system diagram.
10: Energy flow when the motor is regenerative braking. 11: Schematic diagram of the energy recovery circuit. 12: Force analysis Load torque. 13: Sample data obtained and processed through the Curve fitting tool.52 In chapter 4: Figure 4.
1: Test layout diagram .2kW Hong Ky motor control test. 3: The motor is fed into the test load generator. 4: Speed signal reading instrument. 5: Actual experimental installation layout.
6: Tektronix pulse meter. 7: Encoder measuring engine speed. 8: Loadcell measuring torque when generating load .58 In Chapter 5: Figure 5. 1: Waveform of the control signal.
2: Output voltage waveform at fundamental frequency. 3: Graph obtained after generating load at 45Hz. 4: Characterization graph when the load is generated at 43Hz. 5: Calculation line when generating load at 40Hz.62 6 List of Tables In Chapter 3: Table 3.
1: Basic parameters of opto HCPL2631 (datasheet). 2: Basic parameters of IGBT IHW20N120R2 (datasheet). 3: Basic parameters of IC (datasheet) .42 In Chapter 4: Table 4.55 In Chapter 5: Table 5. 1: Comparison of actual and tested dynamometer results.62 7 Abstract The project presents how to control circuit and load generation method for motor power test bench, the load generating part used is a 3-phase asynchronous electric motor.
The research focuses on three main tasks, including the design of the test bench holder, the arrangement of sensors to collect the test motor's parameters, the design of a load generating controller based on the inverter's operation, the collection of collect and process the signals obtained from the dynamometer to evaluate the load generation capability in comparison with the available dynamometer. Specifically, the test bench is designed on Inventor software and tested in real time to be effective and minimize vibration and noise when testing, and a 3HP 3-phase motor will be used for the load generator and rectifier. , the control circuit is designed and processed then STM32F103C8T6 is a programmed processor chip that combines IR2136 driver and an inverter circuit consisting of IGBT semiconductor keys which are the 3 main parts of the inverter, from which 1-phase AC power. By driving the variable frequency of load, system can be increased or decreased braking torque without changing mechanical load/contact.
The consumer will be converted to a variable frequency 3-phase voltage which is then used to control the load generating motor, sensor signals such as load cells, and the encoder is used to collect speed values. and engine torque. The input signal is represented by a variable resistor. It is a replacement for signal from a Hall sensor in real Brake Pedal, the driver works on the single boost converter method.
The signals received directly from the sensors will be processed through the microcontroller and Matlab software and output the characteristic curve when under load of the test motor. Reason to choose the topic Nowadays, the devices using electric motors are becoming more and more popular and are gradually being replaced by fossil fuel engines, so the demand for production and manufacturing of electric motors is being directed by many businesses. Not to mention the vehicles using electric motors are also trending in research and development by many countries around the world and Vietnam is certainly not out of the general trend of the world. It can be seen that the development potential of electric cars in the Vietnamese market is huge, about 1,100 electric cars are in operation, mainly imported cars, for personal and tourism purposes [1].
However, the efficiency and performance of electric motors are still not considered optimal compared to gasoline engines, so Vietnamese consumers have not really embraced electric cars, with 33% of the respondents in the polls. Recent survey intends to buy electric car [2]. In order to keep up with the continuous development of electric vehicles, and the ability to localize products, it is necessary to have devices for researchers to be able to evaluate engines and improve the efficiency of electric motors. Therefore, the research and design of electric motor testing equipment is necessary.
Although not a pioneer in the field of electric vehicles, but Vietnam is one of the countries being pushed to produce electric vehicles. Since that, electric motor test bench has been researched and designed. Later, it would be possible to research, design and manufacture electric vehicles based on common electric motors in Vietnam. Goal - Developing a method of generating load of the test bench using an asynchronous motor.
- Calculation and design of load-generating control circuit using three-phase asynchronous motor. - Develop a method to control load generation using inverters. - Evaluate the performance of the test bench when measuring a particular electric motor, comparing the results with another test rig. Research subjects and its range - Electric motor power test bench 9 - Non-copper motor.
- Brake Chopper circuit. - Load generation method on three-phase asynchronous motor. - Design a power test bench using a three-phase asynchronous motor.