Excitation characteristics of lobe hydrogen circulating pump in polymer electrolyte membrane fuel cell under different clearances and pressure ratios

Zhou, Runze; Dong, Liang; Liu, Houlin; Dai, Cui; Zhang, Lixin

doi:10.1016/j.applthermaleng.2023.120230

Cited by 8 publications

(6 citation statements)

References 36 publications

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“…Within a operational cycle, both intake pressure and discharge pressure exhibit four pressure pulsations, and their pulsation characteristics are opposite. This is consistent with the phenomenon of four pressure pulsations in one cycle mentioned in reference, [ 19 ] and the main reason for this phenomenon is that the two‐blade hydrogen circulation pump will discharge the hydrogen volume of four fundamental volumes in one cycle. The references only explain the existence of this phenomenon, while this article makes a specific analysis of the pressure pulsation process.…”

Section: Numerical Simulation Results and Analysissupporting

confidence: 90%

“…Zhang et al [17,18] performed 3D transient computational fluid dynamics modeling on a vortex-type hydrogen pump that accounted for leakage flows through RC as well as AC, generating dynamic mesh for solving multiscale problems associated with moving vortices. Zhou et al [19] investigated the pulsation characteristics and the impact of radial excitation force on Roots hydrogen circulation pump with different working clearances under identical operating conditions. They concluded that increasing the working clearance can effectively reduce the amplitude through their analysis.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flow Field Analysis and Performance Study of a Hydrogen Circulation Pump for Proton Exchange Membrane Fuel Cell Vehicles with Different Working Clearances

Liang,

Pang,

Liu

et al. 2024

Energy Tech

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This study investigates the impact of working clearances on the internal flow field, pressure pulsations, flow pulsations, and radial forces experienced by a hydrogen circulation pump. Numerical calculations are conducted on seven sets of distinct working clearances for the pump. The research findings demonstrate that an increase in meshing clearance and radial clearance results in higher leakage flow rate during the compression exhaust process, leading to a decrease in hydrogen circulation pump's exhaust flow rate. When the meshing clearance increases from 0.15 to 0.21 mm, the actual exhaust flow rate of the pump decreases from 37.46 to 32.73 m3 h−1. Similarly, when the radial clearance increases from 0.18 to 0.24 mm, the actual exhaust flow rate of the pump decreases from 42.46 to 29.71 m3 h−1. Additionally, with an increase in meshing clearance, both the radial forces Fx and Fy of the active rotor exhibit a downward trend. Yet, as radial clearance grows, the radial force Fx slightly descends, while the change trend of radial force Fy is first positive decrease and then reverse increase.

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Section: Numerical Simulation Results and Analysissupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Flow Field Analysis and Performance Study of a Hydrogen Circulation Pump for Proton Exchange Membrane Fuel Cell Vehicles with Different Working Clearances

Liang,

Pang,

Liu

et al. 2024

Energy Tech

View full text Add to dashboard Cite

show abstract

“…It was shown that when the pressure ratio is kept constant, the volume efficiency, vibration acceleration level (VAL), and the external noise are directly proportional to the lobe rotor speed. Zhou et al [76] designed cam hy- A vortex hydrogen circulation pump is mainly composed of a motor, a partition, and an impeller. The whole design adopts the principle of no through shaft.…”

Section: An Overview Of the Lobe Hydrogen Circulation Pumpmentioning

confidence: 99%

“…It was shown that when the pressure ratio is kept constant, the volume efficiency, vibration acceleration level (VAL), and the external noise are directly proportional to the lobe rotor speed. Zhou et al [76] designed cam hydrogen circulating pumps with different gap schemes and studied the flow characteristics and volume efficiency under different pressure ratios based on a minimum radial force pulsation scheme. Furthermore, they analyzed the effects of different rotor-rotor and rotor-casing radial gaps on the pulsation characteristics and volume efficiency of the pump flow.…”

Section: An Overview Of the Lobe Hydrogen Circulation Pumpmentioning

confidence: 99%

A Review of the Research Progress and Application of Key Components in the Hydrogen Fuel Cell System

Li,

Wu,

Cheng

et al. 2024

Processes

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The hydrogen cycle system, one of the main systems used for hydrogen fuel cells, has many advantages. It can improve the efficiency, the water capacity, and the management of thermal fuel cells. It can also enhance the safety of the system. Therefore, it is widely used in hydrogen fuel cell vehicles. We introduce the structure and principles of hydrogen cycle pumps, ejectors, and steam separators and analyze and summarize the advantages of the components, as well as reviewing the latest research progress and industrialization status of hydrogen cycle pumps and ejectors. The technical challenges in hydrogen circulation systems and the development direction of key technologies in the future are discussed. This paper aims to provide a reference for research concerning hydrogen energy storage application technology in hydrogen fuel cell systems.

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“…The potential of hydrogen fuel cells as an alternative energy source to internal combustion engines is increasingly being recognized, prompting a surge of research in this field [ 1 ]. Consequently, certain automakers have highlighted the hydrogen circulation pump, an integral component of the hydrogen fuel cell subsystem, as a significant area for in-depth study [ 2 ]. Owing to their superior power density, compact design, and impressive dynamic performance, brushless DC motors (BLDCM) are frequently selected as actuators within hydrogen circulation structures in a variety of vehicle control systems.…”

Section: Introductionmentioning

confidence: 99%

A Sage–Husa Prediction Algorithm-Based Approach for Correcting the Hall Sensor Position in DC Brushless Motors

Wang

Yong

Yin

2023

Sensors

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Accurate knowledge of the rotor position is essential for the control of brushless DC motors (BLDCM). Any deviation in this identification can cause fluctuations in motor current and torque, increase noise, and lead to reduced motor efficiency. This paper focused on a BLDCM equipped with a three-phase binary Hall sensor. Based on the principle of minimum deviation, this paper estimated the relative installation offset between the Hall sensors. It also provided a clear method for ideal phase commutation position recognition and eliminated the Hall sensor installation position deviation. The proposed pre-calibration method identified and eliminated the offset of the permanent magnet poles, the delay time caused by the Hall signal conditioning circuit, and the offset of the sensor signal identification due to armature response under different loads. Based on the pre-calibration results, a correction strategy for correcting the rotor position information of BLDCMs was proposed. This paper presented a self-adaptive position information prediction algorithm based on the Sage–Husa method. This filters out rotor position information deviations that are not eliminated in pre-calibration. Experimental results on a hydrogen circulation pump motor showed that, after the pre-calibration method was adopted, the Mean Square Error (MSE) of motor speed fluctuations decreased by 92.0%, motor vibration was significantly reduced, average phase current decreased by 62.8%, and the efficiency of the hydrogen circulation pump system was significantly improved. Compared to the traditional KF prediction algorithm, the Sage–Husa adaptive position information prediction algorithm reduced the speed fluctuation during the uniform speed operation stage and speed adjustment stage, the speed curve overshoot, and the commutation time deviation throughout the process by 44.8%, 56.0%, 54.9%, and 14.7%, respectively. This indicates a higher disturbance rejection ability and a more accurate and stable prediction of the commutation moment.

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Excitation characteristics of lobe hydrogen circulating pump in polymer electrolyte membrane fuel cell under different clearances and pressure ratios

Cited by 8 publications

References 36 publications

Flow Field Analysis and Performance Study of a Hydrogen Circulation Pump for Proton Exchange Membrane Fuel Cell Vehicles with Different Working Clearances

Flow Field Analysis and Performance Study of a Hydrogen Circulation Pump for Proton Exchange Membrane Fuel Cell Vehicles with Different Working Clearances

A Review of the Research Progress and Application of Key Components in the Hydrogen Fuel Cell System

A Sage–Husa Prediction Algorithm-Based Approach for Correcting the Hall Sensor Position in DC Brushless Motors

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