Stator slotted design of axial flux permanent magnet generator for low-speed turbine

The wind power plant has an important component, namely a generator which is an
electrical engine that converts mechanical energy into electrical energy. This paper discusses
the design of the permanent rotor axial flux generator (Single Rotor Single Stator) using a
slotted stator and using a slotted stator reference design. To find out more in detail, this work
was conducted by comparing four different generator designs, the number of slots and tooth
widths. Testing the width of the teeth and the number of slots varied, including 12 slots width
of teeth 23 mm, 15 slots width of teeth 18 mm, and 18 slots width of teeth 15 mm. The
permanent magnet used in this study is neodymium iron boron, NdFeB 48/11 with a total of 10
poles. The desired reference power is 100 Watt with a speed of 500 Rpm. The outputs of each
design in the form of voltage, current, power, and efficiency are discussed. The conclusion
obtained that the additional teeth to the stator and increasing the number of axial flux slots
affect the specified output parameters. The result of using teeth is that the voltage, current, and
power are getting bigger and the more number of slots the smaller the voltage, current, and
power.