# Cost-Effective Scheme for a Brushless Wound Rotor Synchronous Machine

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## Abstract

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## 1. Introduction

## 2. Concept of the Proposed Scheme

_{x}is the number of Wxyz winding turns, p is the number of pole pairs, and θ is the spatial angle. Although the additional three-phase winding Wxyz creates a two-pole rotating air gap flux, this flux has a different relative speed of rotation with respect to the rotor. It is illustrated in Figure 4 that the phase sequence changing of Wxyz will induce a six-pole flux linkage with the harmonic winding on the rotor.

## 3. Electromagnetic Performance

## 4. Conclusions

## Author Contributions

## Funding

## Conflicts of Interest

## References

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**Figure 4.**Illustration of the fundamental MMF, harmonic MMF, and the induced harmonics in the machine.

Parameters | Unit | Value |
---|---|---|

Rated speed | rpm | 1800 |

Rated current | A-peak | 10 |

Stator outer diameter | mm | 177 |

Rotor outer diameter | mm | 99 |

Air-gap length | mm | 0.5 |

Shaft diameter | mm | 24 |

Stack length | mm | 65 |

Number of armature winding poles | - | 4 |

Number of stator slots | - | 18 |

Number of harmonic winding poles | - | 6 |

Armature (ABC) winding turns | - | 300 |

Harmonic (XYZ) winding turns | - | 150 |

Field winding turns | - | 200 |

Harmonic winding turns | - | 50 |

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**MDPI and ACS Style**

Sirewal, G.J.; Bukhari, S.S.H.
Cost-Effective Scheme for a Brushless Wound Rotor Synchronous Machine. *World Electr. Veh. J.* **2021**, *12*, 194.
https://doi.org/10.3390/wevj12040194

**AMA Style**

Sirewal GJ, Bukhari SSH.
Cost-Effective Scheme for a Brushless Wound Rotor Synchronous Machine. *World Electric Vehicle Journal*. 2021; 12(4):194.
https://doi.org/10.3390/wevj12040194

**Chicago/Turabian Style**

Sirewal, Ghulam Jawad, and Syed Sabir Hussain Bukhari.
2021. "Cost-Effective Scheme for a Brushless Wound Rotor Synchronous Machine" *World Electric Vehicle Journal* 12, no. 4: 194.
https://doi.org/10.3390/wevj12040194