A novel hybrid excited synchronous machine for (H)EV applications

This paper presents the design and research results of a claw pole machine with hybrid excitation. This machine is excited by permanent magnets and an electromagnetic coil. Both excitation sources are located in the rotor of the machine. Additionally, the rotor is made of a laminated core. This approach facilitates the process of its construction and enables the implementation of even very complicated structure of the rotor, which would be difficult in case of making the rotor from a one piece of material. This paper presents the construction as well as the results of simulation and experimental tests of the machine prototype. The tests showed that the proposed machine has the ability to adjust the voltage in a wide range. Such as a feature could be used, for example, to increase the speed of motor operation in case of an electric vehicle application, but also to regulate the voltage in wind turbines which generators operate at varying rotor speeds resulting from changing wind speed.

show abstract

“…The paper [1] presents the concept of a claw pole machine with an external stator and a stationary excitation control system (Fig. 6).…”

Section: Topologies Of Claw Pole Machinesmentioning

confidence: 99%

Simulation and Experimental Research of Claw Pole Machine With a Hybrid Excitation and Laminated Rotor Core

Wardach

Prajzendanc

Cierzniewski

et al. 2021

IAPGOS

View full text Add to dashboard Cite

show abstract

“…Burkhardt et al (2014) describe the concept of a claw pole machine with external stator and fixed excitation control system [Figure 3(b)]. The rotor in this structure has claw poles, and fixed permanent magnets in their vicinity are placed on separated toroidal cores.…”

Section: Review Of Claw Pole Machine Constructions With Permanent Magnetsmentioning

confidence: 99%

“…Actually, many different technical designs of hybrid excited machines, including claw pole and cylindrical machines with permanent magnets, are described in literature (Paplicki et al , 2015; Di et al , 2016; Guo et al , 2009; Jack et al , 1997; Guo et al , 2003; Zhang et al , 2016; Leroy and Foveau, 2013; Melcescu et al , 2012; Burkhardt et al , 2014; Aydin et al , 2002; Dajaku et al , 2016; Ibala and Masmoudi, 2016; Elloumi et al , 2015; Zhu et al , 2015; Rebhi et al , 2011). Several claw pole machines mentioned above have some serious limitations – the excitation flux is not controllable (Guo et al , 2009; Jack et al , 1997; Guo et al , 2003; Zhang et al , 2016), introducing special areas within the machine to limit the magnetic flux leakage is required (Leroy and Foveau, 2013) or construction of the machine is very complicated (Melcescu et al , 2012; Burkhardt et al , 2014). The paper offers a structure of the machine, where permanent magnets are placed on claws of one part of the rotor (Wardach, 2016).…”

Section: Introductionmentioning

confidence: 99%

Torque and back-emf in hybrid excited claw pole generator

Wardach

2018

COMPEL

View full text Add to dashboard Cite

Purpose The paper aims to present the hybrid excited claw pole generator design, simulation and experimental results. The prototype has claw poles on two rotor sections, between which an excitation coil is located. The innovation of this machine is permanent magnets location on claws of one part of the rotor. The paper presents construction of the machine and analysis of the current in the excitation control coil influence on the electromagnetic torque, cogging torque and back-emf values. Presented studies enabled the determination of the torque and the back-emf for both: the strengthening and the weakening of magnetic field. Design/methodology/approach In the study, finite element analysis was used to perform simulation research. Then, based on the simulation studies, an experimental model was built. The paper also presents selected experimental results. Findings Achieved results show that the proposed machine topology allows to eliminate the disadvantages mentioned in paper, i.e. necessary to introduce special areas inside the machine to limit magnetic flux leakage or its complicated construction. Research limitations/implications The obtained cogging torque values and back-emf pulsation are still relatively high. In the near future, some of known techniques for reducing these pulsations can be applied, including the use of magnetic wedges, changing shapes of rotor’s poles and/or skewing of permanent magnets. Practical implications The proposed solution can be used in wind turbines as a generator. Originality/value The paper presents an original design of a new construction of a hybrid-excited claw pole machine and also an excitation current influence on cogging torque and back-emf values.

show abstract

“…OR traction motors of electric vehicles and hybrid electric vehicles, various types of traction machines have been proposed [1]- [4]. The traction motors for such applications require a high output power in a wide speed range.…”

Section: Introductionmentioning

confidence: 99%

Finite-Element Analysis and Experiment of Current Superimposition Variable Flux Machine Using Permanent Magnet

et al. 2016

View full text Add to dashboard Cite

We have proposed a current superimposition variable flux reluctance machine that can control its torque constant. This machine can be operated by using a 6-phase superimposition current composed of AC-armature and DC-field currents. In this paper, we propose a current superimposition variable flux machine using permanent magnets. The permanent magnets increase the DC magnetic flux. First, the structure and operational principle of this machine are described. Next, the torque characteristics are computed under vector control. Finally, the computed characteristics are verified by carrying out measurements on a prototype.

show abstract

A novel hybrid excited synchronous machine for (H)EV applications

Cited by 15 publications

References 17 publications

Simulation and Experimental Research of Claw Pole Machine With a Hybrid Excitation and Laminated Rotor Core

Simulation and Experimental Research of Claw Pole Machine With a Hybrid Excitation and Laminated Rotor Core

Torque and back-emf in hybrid excited claw pole generator

Finite-Element Analysis and Experiment of Current Superimposition Variable Flux Machine Using Permanent Magnet

Contact Info

Product

Resources

About