scholarly journals Performance Optimization Analysis of Hybrid Excitation Generator with the Electromagnetic Rotor and Embedded Permanent Magnet Rotor for Vehicle

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Huihui Geng ◽  
Xueyi Zhang ◽  
Lanian Tong ◽  
Qingzhi Ma ◽  
Mingjun Xu ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Performance Optimization ◽  
Optimization Analysis ◽  
Excitation Generator ◽  
Hybrid Excitation

scholarly journals Development of Brushless Claw Pole Electrical Excitation and Combined Permanent Magnet Hybrid Excitation Generator for Vehicles

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4723 ◽  
Author(s):  
Huihui Geng ◽  
Xueyi Zhang ◽  
Yufeng Zhang ◽  
Wenjing Hu ◽  
Yulong Lei ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Output Voltage ◽  
High Efficiency ◽  
Voltage Regulation ◽  
Electrical Excitation ◽  
Excitation Generator ◽  
Finite Element Software ◽  
Wide Range ◽  
Hybrid Excitation

Aiming at the problems of large excitation loss and low power generation efficiency of silicon rectifier generators and the unstable output voltage of permanent magnet (PM) generators, a hybrid excitation generator (HEG) with suspended brushless claw pole electrical excitation rotor (EER) and combined magnetic pole PM rotor is proposed in the present work. With only one fractional slot winding stator, the generator adopts PM field as the main magnetic field and electrical excitation field as the auxiliary magnetic field, which not only retains the advantages of high efficiency of PM generators but also effectively reduces excitation consumption. The main structure parameters and the design method were analyzed, and a simulation analysis of no-load magnetic field distribution and flux regulation ability was carried out using finite element software to verify the rationality of the hybrid excitation parallel magnetic circuit design. Moreover, the no-load, load, regulation, and voltage regulation characteristics of the designed generator were tested, and the results show that the designed generator has a wide range of voltage regulation, which can ensure stable output voltage under variable speed and load conditions.

scholarly journals Electromagnetic Design and Flux Regulation Analysis of New Hybrid Excitation Generator for Electric Vehicle Range Extender

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Wenjing Hu ◽  
Xueyi Zhang ◽  
Huihui Geng ◽  
Ting Gao ◽  
Liwei Shi ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Air Gap ◽  
The Finite Element Method ◽  
Electromagnetic Design ◽  
Excitation Generator ◽  
Output Performance ◽  
Range Extender ◽  
Hybrid Excitation ◽  
Different Types ◽  
Stable Voltage

Aiming at the problem of uncontrollable magnetic field of permanent magnet generators, a new hybrid excitation generator (HEG) with parallel magnetic circuit is proposed. The HEG consists of combined permanent magnet rotor (PMR) and brushless electric excitation rotor (EER). The PMR has surface-mounted and embedded magnets. The PMR provides the main air gap field, and the brushless EER is used to adjust the air gap field. The operating principle and electromagnetic design scheme of the proposed generator are given in detail. Besides, the matching with two different types of rotors and the flux regulation characteristics is analyzed by using the finite element method. Finally, the output performance of the proposed generator including no-load and load characteristics and output voltage are tested. The results show that the two different types of rotors can be matched efficiently and operated reliably. The internal magnetic flux is easy to adjust in both directions, and the proposed HEG can output stable voltage in the range of wide speed and load.

Performance Optimization Analysis of Robotic Operating System ROS Communication

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Madison Elias
Keyword(s):  
Operating System ◽  
Performance Optimization ◽  
Loose Coupling ◽  
Communication Mode ◽  
Optimization Analysis ◽  
Standard Operating

ROS is the actual standard operating system in robotics field. It uses TCP / IP based communication mode to realize the loose-coupling connection between the points of modules.

Modeling and simulation analysis of the hybrid excitation synchronous machine system utilizing tooth harmonic for excitation

2016 ◽  
Vol 35 (2) ◽  
pp. 540-555 ◽  
Author(s):  
Yonghong Xia ◽  
Junbo Liu ◽  
Bo Xu ◽  
Hongjian Wu
Keyword(s):  
Permanent Magnet ◽  
Operation Mode ◽  
Structural Features ◽  
Current Waveform ◽  
Standard State ◽  
State Equations ◽  
Permanent Magnet Machine ◽  
Content Type ◽  
Machine System ◽  
Hybrid Excitation

Purpose – The purpose of this paper is to propose a novel hybrid excitation permanent magnet synchronous generator (HEPMSG) utilizing tooth harmonic for excitation, the structural features and operation principle of which are also described. Design/methodology/approach – To obtain the operation performance quickly, this paper derives the mathematical model of the machine system represented by circuit, and analyzes the operation mode of rectifier circuit in the tooth harmonic excitation system, then the standard state equations for each operation mode are obtained. Combining the inductance parameter of this machine with the load resistance and inductance, the armature current waveform, the field current waveform and tooth harmonic winding current waveform are obtained by using the numerical method to solve the standard state equation. Findings – Comparing with the experimental results, the availability of the principle and the validity of the model of the machine system are verified. Practical implications – This HEPMSG is a new brushless self-excited and self-regulated generator, which is suitable for an independent power source. Originality/value – Unlike the existing hybrid excitation permanent magnet machine, this HEPMSG utilized the inherent tooth harmonic EMF of the rotor to adjust the air-gap magnetic field of the permanent magnet machine.

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