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Armature winding and circuit diagram: (a) slot star diagram of armature winding; (b) armature winding connection layout; (c) schematic diagram of rectifier circuit.
Source publication
A brushless parallel hybrid excitation claw pole generator (HECPG) is proposed for electric vehicle (EV) application. Permanent magnet (PM) excitation method can reduce the volume of the machine and improve the power density and efficiency. Moreover, the voltage regulation can be ensured by field excitation. The flux path of the proposed HECPG is c...
Contexts in source publication
Context 1
... sets of three-phase armature winding, where one set lags 30 electric degrees behind the other, are connected to double three-phase diode rectifier circuit to supply the DC-Bus; thus, current ripple can be reduced, and harmonic factor is optimized. The slot star diagram of armature winding is shown in Figure 3a, and its winding connection layout is shown in Figure 3b. The schematic diagram of rectifier circuit is shown in Figure 3c. ...
Context 2
... sets of three-phase armature winding, where one set lags 30 electric degrees behind the other, are connected to double three-phase diode rectifier circuit to supply the DC-Bus; thus, current ripple can be reduced, and harmonic factor is optimized. The slot star diagram of armature winding is shown in Figure 3a, and its winding connection layout is shown in Figure 3b. The schematic diagram of rectifier circuit is shown in Figure 3c. ...
Context 3
... slot star diagram of armature winding is shown in Figure 3a, and its winding connection layout is shown in Figure 3b. The schematic diagram of rectifier circuit is shown in Figure 3c. Because of advantages such as short end-winding, high slot filling factor, low cogging torque, greater tolerance, and low manufacturing costs, a 12-slot, 10-pole fractional slotconcentrated winding is chosen as the armature layout, as shown in Figure 3b. ...
Context 4
... schematic diagram of rectifier circuit is shown in Figure 3c. Because of advantages such as short end-winding, high slot filling factor, low cogging torque, greater tolerance, and low manufacturing costs, a 12-slot, 10-pole fractional slotconcentrated winding is chosen as the armature layout, as shown in Figure 3b. Benefits are obtained with this armature layout, the fundamental harmonic winding factor is improved, and many harmonics in main air gap flux are eliminated. ...
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Citations
... The third option is to use two rotors, an electrically excited rotor and permanent magnet rotor, coaxially parallel to each other to share the same stator parallel hybrid excitation structure [11][12][13]. This solution can meet the advantages of both the electrically excited claw-pole motor with good performance and permanent magnet motor with a high power density. ...
A new type of brushless reverse claw-pole electrically excited generator is proposed for the problems of the low sine degree of the induced electromotive force waveform and the high harmonic content of the output voltage of the conventional electrically excited claw-pole generator. The design uses the equivalent magnetic network method to establish the equivalent magnetic circuit model of the motor and determines the equation for calculating the magnetoresistance of the isosceles trapezoidal variable section claw-pole structure. It derives the mathematical model of the no-load induced electric potential of the generator and completes to optimize the motor parameters with the no-load induced electric potential as the target. This study shows that the brushless reverse claw-pole electrically excited generator has the advantages of uniform magnetic field distribution, high harmonic fundamental amplitude of induced electromotive force and low harmonic content. It can better meet the application requirements compared with the conventional electrically excited claw-pole generator.
A new analytical magnetic circuit hybrid model (AMCHM) is proposed to predict uneven air gap magnetic field for disc planetary permanent magnet machine (DP-PM machine) with segmented gap Halbach array. The 3-D model is transformed into 2-D model by using radial sectors-of-rings division method and coordinate transformation. The 2-D magnetic field model is obtained by analytical method, and the magnetic equivalent circuit (MEC) model is used to consider the leakage flux loops with and without magnetic coupling. Finally, the analytical models of uneven air gap magnetic field and torque are obtained. The results obtained from proposed model are in good agreement with those of 3-D finite element method (FEM), which verifies the validity of AMCHM. Compared with 3-D FEM model, the AMCHM is convenient for the analysis and optimization of structure parameters, and it improves the calculation efficiency. The research results can be utilized for the research on structural optimization and power analysis.
