A Study on the Open-Phase Current Fault Diagnosis of Motor Drive System for Electric Vehicle

2019 ◽  
Vol 68 (7) ◽  
pp. 854-859
Author(s):  
Sang-Hun Lee
Keyword(s):  
Fault Diagnosis ◽  
Electric Vehicle ◽  
Drive System ◽  
Motor Drive ◽  
Phase Current ◽  
Open Phase ◽  
Motor Drive System

BLDC Motor Drive System of Air-Condition of Hybrid Electric Vehicle

2007 ◽  
Author(s):  
Tae Uk Jung ◽  
Sung Ho Lee ◽  
Sung Jun Park ◽  
Cheol Ho Yun ◽  
Yu Tao
Keyword(s):  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Drive System ◽  
Motor Drive ◽  
Bldc Motor ◽  
Hybrid Electric ◽  
Motor Drive System

scholarly journals Phase Current Measurement Method of Dual Inverter-Motor Drive System Using a Single DC Link Current Sensor

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5626
Author(s):  
Seon-Ik Hwang ◽  
Seong-Hyeon Cho ◽  
Jun-Hyung Jung ◽  
Jang-Mok Kim
Keyword(s):  
Electric Propulsion ◽  
Pulse Width Modulation ◽  
Error Component ◽  
Drive System ◽  
Motor Drive ◽  
Switching Frequency ◽  
Two Phase ◽  
Phase Current ◽  
Current Sensors ◽  
Motor Drive System

In recent years, electric propulsion systems have become widely, used and these systems have strict limits in volume and weight. Therefore, it is necessary to reduce the weight of the inverter-motor drive system. In a typical inverter-motor drive system, at least phase current sensors are required. In order to reduce the number of phase current sensors, this paper proposes a method for measuring phase current using DC link current sensors in a inverter-motor drive system. Two phase currents per inverter-motor system are measured during one period of the switching frequency using the pulse width modulation (PWM) shift method. However, since the measured phase current contains an error component in the average current, the error component was compensated for in order to obtain a current similar to the actual phase current by using the slope and dwell time of the phase current. The effectiveness of the proposed method is verified through experiments.

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