Fault-tolerant of Hall-effect sensors in permanent magnet in-wheel motor drives

Abstract

In this paper, Hall-effect sensor faults are investigated in Sinusoidal-current-fed Permanent Magnet In-wheel Motor (PMIM) drives. And an effective methodology for their diagnostic and compensation is proposed. In particular, fault diagnostic only based Hall sensors signal, at the rising or falling edges of Hall signal, fault types of Hall sensors are diagnosed according to the specific type of Hall signal transitions and the current state of Hall signal. Fault-compensation based on reduced-order observer which has been devised to be free from the mechanical parameters (such as, inertia) in rotor position estimation process. The validity and effectiveness of the proposed methods are verified by experiments on PMIM with excessive and variable load.

Hall sensor fault diagnosis and compensation in Brushless DC motor drive using artificial intelligence technique

“…After the diagnosis of the first fault, the second fault is assumed to have occurred, but this will not always happen in real cases. In Lv and Du, 12 Hall fault diagnosis is done based on the reduced‐order observer, and the duration between two successive Hall transitions is used for rotor velocity estimation. In this method, calculation delay during low speed may result in estimation error due to misalignment of position sensors.…”

“…Whenever sensor fault is identified, the controller will shift its control to field‐oriented control, but it is possible to detect, identify, and compensate Hall faults only after analyzing the shape of the quantized position vector locus. In Lv et al, 17 an improved interpolation position algorithm is proposed which overcomes the drawbacks mentioned in Lv and Du 12 . In Zhang and Feng, 18 a fast fault‐tolerant system is designed which ensures stable operation in steady‐state and in dynamic conditions.…”

An integrated permanent magnet brushless motor driver with commutation current ripple reduction

“…In recent years, due to the rising awareness of environmental protection, electric motorcycles have gradually become the development focus. Permanent magnet brushless motors are widely used because of their benefits in maintenance, high power density, and simple control methods [1,2,3,4,5,6]. The three-phase full-bridge inverter with six active switches is the most common topology of the motor driver.…”

Easy Hall position sensor fault-tolerant control algorithm for brushless DC drives

“…In the study of fault-tolerant control, some scholars have proposed the Hall fault compensation methods based on reduced-order observer [8,9]. However, these methods use the duration between the two successive Hall transitions to estimate the average rotor velocity, which will produce the calculation delay at low speed and cause an estimation error due to the misaligned Hall-effect sensors.…”