scholarly journals Research on Electromagnetic-Radiated Emission of Multi-in-One Electric Drive System

2021 ◽  
Vol 12 (3) ◽  
pp. 127
Author(s):  
Ruoxi Tan ◽  
Shangbin Ye ◽  
Cheng Yu ◽  
Chenghao Deng ◽  
Anjian Zhou
Keyword(s):  
Electric Drive ◽  
Electromagnetic Interference ◽  
Drive System ◽  
Emission Model ◽  
Antenna Effect ◽  
Common Mode ◽  
Electric Drive System ◽  
Conducted Emission ◽  
The Common ◽  
Radiated Emission

The strong electromagnetic interference produced by the electric drive system is the main factor that leads to the strong radiated emission of electric vehicles. It is very important to study the influence of the electric drive system on vehicle-radiated emission by taking the common-mode current of the electric drive system as the interference source. In this paper, the conducted emission model of the electric drive system is proposed, and the common-mode current is calculated by this model. The influence of filter on the common-mode interference current of HVDC cables is calculated and analyzed, and then the radiating antenna effect model of HVDC cables is established. Based on this, a vehicle-level radiated emission simulation model including an electric drive system and DC cables was established. The effectiveness of the conducted emission model was verified by experiments. The effects of different shielding structures on the shielding efficiency of HVDC cables were compared. Quantitative guidance for EMI suppression design of multi-in-one electric drive system design can be provided by the model in this paper.

scholarly journals Optimization of TSPWM for Common-Mode Voltage Reduction in Vehicular Electric Drive System

2021 ◽  
Vol 13 (1) ◽  
pp. 5
Author(s):  
Shang Jiang ◽  
Yuan Wang
Keyword(s):  
Electric Drive ◽  
Drive System ◽  
Modulation Method ◽  
Time Interval ◽  
Common Mode ◽  
Common Mode Voltage ◽  
Electric Drive System ◽  
The Common ◽  
Modulation Methods ◽  
Zero Voltage

Common-mode voltage can be reduced effectively by optimized modulation methods without increasing additional costs. However, the existing methods cannot satisfy the requirements of the vehicular electric-drive application. This paper optimizes the tri-state voltage modulation method to reduce the common-mode voltage for vehicular electric drive system applications. Firstly, the discontinuous switching issue during sector transition is analyzed. Under the limit of two switching times in one period, multiple alignments combination is proposed to address that issue. Secondly, the zero-voltage time intervals in different modulation ranges are explored. This paper proposes an unsymmetric translation method to reconstruct the voltage vector, and then the minimum zero-voltage time interval is controlled to enough value for safe switching. Finally, the proposed methods have been validated through experiments on a vehicular electric drive system. The results show that the common-mode voltage can be reduced effectively in the whole range with the optimized tri-state voltage modulation method.

Research on Dynamic Conducted EMI Characteristics of Electric Drive System in Electric Vehicles

2013 ◽  
Vol 773 ◽  
pp. 3-8
Author(s):  
Yan Jie Guo ◽  
Li Fang Wang ◽  
Cheng Lin Liao
Keyword(s):  
Electric Vehicles ◽  
Electric Drive ◽  
Electromagnetic Interference ◽  
Drive System ◽  
Vehicle Speed ◽  
Motor Speed ◽  
Electric Drive System ◽  
Economic Commission ◽  
Simulation And Experiment ◽  
Conducted Emi

This paper represents the conducted electromagnetic interference (EMI) characteristics of the electric drive system in electric vehicles, based on the typical vehicle driving circles. Firstly, the typical vehicle driving circles are introduced, such as Economic Commission of Europe-15 (ECE-15), Extra Urban Driving Cycle (EUDC) and so on. Also, the relationships between motor speed, torque and vehicle speed are calculated according to the mechanical properties of the vehicle. Then, the simulation and experiment platforms are established considering the motor speed and torque as reference inputs. Finally, the dynamic EMI of power electronics device switching processes, system dynamic differential mode (DM) and common mode (CM) EMI are analyzed through the simulation and experiment results.

scholarly journals Preface for Special Issue on Electric Drive System for Vehicles

2021 ◽  
Vol 4 (1) ◽  
pp. 1-2
Author(s):  
Xiangyang Xu ◽  
Guangyu Tian ◽  
Hui Liu
Keyword(s):  
Electric Drive ◽  
Drive System ◽  
Special Issue ◽  
Electric Drive System

scholarly journals Opposite Triangle Carrier with SVPWM for Common-Mode Voltage Reduction in Dual Three Phase Motor Drives

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 282
Author(s):  
Seon-Ik Hwang ◽  
Jang-Mok Kim
Keyword(s):  
Electromagnetic Interference ◽  
Pulse Width Modulation ◽  
Motor Drives ◽  
Common Mode ◽  
Pwm Inverter ◽  
Common Mode Voltage ◽  
Voltage Vector ◽  
Three Phase ◽  
The Common ◽  
Zero Voltage

The common-mode voltage (CMV) generated by the switching operation of the pulse width modulation (PWM) inverter leads to bearing failure and electromagnetic interference (EMI) noises. To reduce the CMV, it is necessary to reduce the magnitude of dv/dt and change the frequency of the CMV. In this paper, the range of the CMV is reduced by using opposite triangle carrier for ABC and XYZ winding group, and the change in frequency in the CMV is reduced by equalizing the dwell time of the zero voltage vector on ABC and XYZ winding group of dual three phase motor.

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