Phase current sensing technique for two-phase three-leg inverters using three shunt resistors

2022 ◽  
Author(s):  
Dong-Ki Kim
Keyword(s):  
Two Phase ◽  
Current Sensing ◽  
Phase Current

A fiber‐optic system for three‐phase current sensing using a hybrid sensing technique

1992 ◽  
Vol 63 (3) ◽  
pp. 2035-2039 ◽  
Author(s):  
C. McGarrity ◽  
Y. N. Ning ◽  
J. L. Santos ◽  
D. A. Jackson
Keyword(s):  
Fiber Optic ◽  
Optic System ◽  
Current Sensing ◽  
Phase Current ◽  
Three Phase ◽  
Fiber Optic System

scholarly journals Fault Reconstruction Based on Sliding Mode Observer for Current Sensors of PMSM

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Changfan Zhang ◽  
Huijun Liao ◽  
Xiangfei Li ◽  
Jian Sun ◽  
Jing He
Keyword(s):  
Reference Frame ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Variable Structure ◽  
Sensor Faults ◽  
Two Phase ◽  
Phase Current ◽  
Fault Reconstruction ◽  
Stationary Reference Frame ◽  
Sliding Mode Variable Structure

This paper deals with a method of phase current sensor fault reconstruction for permanent magnet synchronous motor (PMSM) drives. A new state variable is introduced so that an augmented system can be constructed to treat PMSM sensor faults as actuator faults. This method uses the PMSM two-phase stationary reference frame fault model and a sliding mode variable structure observer to reconstruct fault signals. A logic algorithm is built to isolate and identify the faulty sensor for a stator phase current fault after reconstructing the two-phase stationary reference frame fault signals, which allows the phase fault signals to be reconstructed. Simulation results are presented to illustrate the functionality of the theoretical developments.

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.

scholarly journals Two-Phase Current Injection Method for Single Line-to-Ground Fault Arc-Suppression With Revised STATCOM

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 188299-188308
Author(s):  
Yangming Chen ◽  
Shuai Lu ◽  
Xingda Zhou ◽  
Shibin Liang
Keyword(s):  
Current Injection ◽  
Single Line ◽  
Two Phase ◽  
Injection Method ◽  
Phase Current ◽  
Ground Fault

scholarly journals A High-Input Voltage Two-Phase Series-Capacitor DC-DC Buck Converter

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Salahaldein Ahmed Rmila ◽  
Simon S. Ang
Keyword(s):  
Input Voltage ◽  
Buck Converter ◽  
External Control ◽  
Storage Capacitor ◽  
High Input ◽  
Two Phase ◽  
Current Sensing ◽  
Current Sharing ◽  
Capacitor Voltage ◽  
Series Capacitor

A high-input voltage 2-phase series-capacitor (2-pscB) DC-DC buck converter is theoretically analyzed, designed, and implemented. A new design approach for an automatic current sharing scheme was presented for a 2-phase series-capacitor synchronous buck converter. The series-capacitor voltage is used to achieve current sharing between phases without a current sensing circuit or external control loop as each phase inductor charges and discharges the series capacitor to maintain its average capacitor voltage constant. A novel isolated gate driver circuit to accommodate an energy storage capacitor is proposed to deliver isolated gate voltages to the switching transistors. An I2 control scheme that uses only one feedback path control for the four gate drivers is proposed to enable higher voltage conversion. An experimental 110-12 V 6 A load prototype converter was designed, and its current sharing characteristics were experimentally verified.

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