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RCP를 통한 PMSM 구동 시스템의 고장 진단 로직 개발
정기윤(Kiyun Jeong),강래청(Raecheong Kang),김세현(Sehyun Kim),양인범(Inbeom Yang) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
In the complex electric drive system, abnormal status which is considered at first stage of development are very diverse, difficult to predict and irregular. Therefore, the study of fail-safety technology is required prior to beginning any development. In many cases, failure mode test is not easy to represent in the lab. There are simple forms of failure mode like that wire short, open and complex forms like that abnormal signal of current sensor, position sensor, etc. Test of complex forms is time-consuming, expensive. And there is limitation number of test sample. Then we have to consider alternative method of real hardware test. HIL simulator can make the condition and environment for fault insertion. We will operate real time simulation with dynamic model in HIL simulator. It measures PWM duty ratio and frequency of MCU output signals for operating electric drive model. Even though virtual development environment system can simulate the MCU, in this paper, RCP will replace real hardware. Based on HIL simulator and RCP hardware, we can build virtual development environment for testing MCU performance with normal and failure mode. The research object of this paper is the electric drive system used in electric vehicle. This drive system is composed of PMSM, inverter, battery and controller. In this study, fault diagnosis logic of electric parts is investigated.
48V 4륜 구동 하이브리드 시스템의 상위제어 알고리즘 설계 및 연비 분석
정기윤(Kiyun Jeong),하성민(Seongmin Ha),이형철(Hyeongcheol Lee) 한국자동차공학회 2018 한국 자동차공학회논문집 Vol.26 No.1
Presented in this paper is a 48 V-powernet-based powertrain structure with a front-wheel drive system that includes an engine and a 48 V BSG and a rear-wheel drive system driven by a traction motor without a mechanical link to the front-drive axle. The power distribution algorithm of the hybrid supervisory controller includes an electric drive mode by the rear-wheel drive motor as well as a hybrid electric control mode between the engine and the two drive motors. The results of the fuel economy simulation for the 4 WD 48 V mild hybrid system that was performed in the study are presented in this paper, along with the results of the analysis of the varying of the capacity of the rear-drive motor from 5 to 15 kW. The fuel efficiency improvement of the front engine is also compared with that of the BSG. This paper introduces a power distribution algorithm for the mild hybrid drive system model, and presents a design guideline for selecting the capacity of the rear-drive motor based on the simulation results for fuel economy and efficiency improvement.
정기윤(Kiyun Jeong),김세현(Sehyun Kim),강래청(Rachung Kang),양인범(Inbeom Yang) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
In this paper, Hardware-in-the-Loop Simulation(HILS) is developed for evaluating a motor control unit on the signal level interface, simultaneously implementing a dynamic model of electric motor in real-time. Using Rapid control prototyping(RCP) device to function as MCU, motor controller generates PWM signals to HIL simulator, which runs dynamic models of inverter and electric motor, and receives the sensor signals calculated from those models in that simulator. In addition, the various fault signals from HIL simulator is inserted to RCP. It is expected that HILS can be used in developing and evaluating the control algorithm for MCU on the electric motor simulation.
정기윤(Kiyun Jeong),김세현(Sehyun Kim),강래청(Raecheong Kang),양인범(Inbeom Yang) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
In this paper, the BLDC(Brushless DC) motor control unit(MCU) is evaluated for failure mode by Hardware-in-the-Loop Simulation(HILS) on the signal level interface, simultaneously implementing a dynamic model of electric motor in real-time. The MCU generates PWM signals to HIL simulator, which runs dynamic models of inverter and electric motor, and receives the sensor signals calculated from those models in that simulator. We make the failure signal to the MCU IO interface by HIL simulator and evaluate performance of MCU in the failure mode. It is expected that HILS can be used in developing and evaluating the control algorithm for MCU on the electric motor failure mode simulation.
정기윤(Kiyun Jeong),강래청(Raecheong Kang),이형철(Hyeongcheol Lee) 한국자동차공학회 2015 한국 자동차공학회논문집 Vol.23 No.1
This paper presents the d-q axis equivalent circuit model of an interior permanent magnet (IPM) which includes the iron loss resistance. The model is implemented to be able to run in real-time on the FPGA-based HIL simulator. Power electronic devices are removed from the motor control unit (MCU) and a separated controller is interfaced with the real-time simulated motor drive through a set of proper inputs and outputs. The inputs signals of the HIL simulation are the gate driver signals generated from the controller, and the outputs are the winding currents and resolver signals. This paper especially presents iron loss prediction which is introduced by means of comparing the torque calculated from d-q axis currents and the desired torque; and minimizing the torque difference. This prediction method has stable prediction algorithm to reduce torque difference at specific speed and load. Simulation results demonstrate the feasibility and effectiveness of the proposed methods.
FPGA Board를 적용한 ZVS DC-DC Converter의 HIL Simulation 구현
강래청(Raecheong Kang),정기윤(Kiyun Jeong),김세현(Sehyun Kim),양인범(Inbeom Yang) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
The components of green-car are changed enormously by various power systems consisted of an engine and electric motors. Therefore, virtual integrated development environment is needed for modeling, performance evaluation and fault insertion test in a green car platform. Real-time simulation, hardware-in-the-loop, can be available to compose test environment for development and evaluation of electric components. The signal interface between the HIL simulator and a DC-DC converter is developed by designing appropriate wire harness and signal matching. Performance evaluation of the converter is conducted to show the feasibility of the HIL simulator at the virtual test environment. Several different scenarios are implemented and tested by the HIL simulator in real-time. The HIL simulator is also applied to the reliability and fault insertion tests such as extreme temperature test and over current test. HIL simulator generates fault signals on purpose in order to evaluate controller output signals at an abnormal mode. In this paper, the simulation environment is presented by developing Simulink models and compiling in the FPGAs board. The control board of the DC-DC converter is made and tested by the HIL simulation. The connection parts of the control board of the DC-DC converter are modified to communicate to the HIL simulator. To validate the safety at the abnormal situation, a variety of test scenarios can be simulated.
전남주(Namju Jeon),정기윤(Kiyun Jeong),이형철(Hyeongcheol Lee) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
This paper presents a fault detection algorithm for the in-wheel motor drive vehicle by estimating the internal resistance of the motor. The proposed fault detection algorithm is developed based on the least square identification method using the input and the output data. The nonlinear permanent magnet synchronous motor (PMSM) model and a PMSM control algorithm are developed to simulate the fault detection algorithm. The simulation results show the validity of the proposed fault detection algorithm.