Magnetic Power Generator Salient Pole Configuration
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Solution Overview
Problem
Magnetic power generators face challenges in maintaining manufacturing efficiency while achieving high output and efficiency due to non-uniform salient pole intervals, leading to potential power generation imbalances and increased system costs.
Innovation Solution
A magnetic power generator design with salient poles having the same phase adjacently disposed in the circumferential direction, where the disposition angle between the front end portions of the same phase matches the pole arc angle of the permanent magnet, and the adjacent salient poles of different phases are disposed to maintain a uniform space, allowing for efficient coil winding and balanced power generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of magnetic poles is increased to secure the amount of power generation, then the power generation amount is improved, but the system cost increases due to the need for expensive FET type voltage regulators
Solution Approach 1:
The patent changes the pole configuration parameters to achieve a 16-pole 18-pole structure, where the disposition angle of front end portions of salient poles of the same phase is equal to or less than the pole arc angle of permanent magnets. This parameter optimization allows sufficient power generation with fewer magnetic poles, enabling the use of cost-effective thyristor type voltage regulators instead of expensive FET type regulators
2Power
If the disposition angle of adjacent salient poles of different phases is set to be narrower than the pole arc angle, then the power generation amount is improved, but the power balance between phases becomes unbalanced
Solution Approach 1:
The patent optimizes the disposition angle parameter to be equal to or less than the pole arc angle of permanent magnets, and specifically designs the configuration where the disposition angle of front end portions of salient poles of the same phase maintains power balance. This parameter optimization achieves both high power generation and balanced power distribution among phases
Solution Approach 2:
The patent applies different disposition angle configurations to different phase groups. Salient poles of the same phase are arranged with disposition angles optimized for power generation, while maintaining overall phase balance. This local optimization approach allows each phase to achieve maximum power while maintaining system-wide balance
3Power
If the interval between adjacent salient poles of different phases is set to be narrower, then the power generation amount is improved, but the manufacturing efficiency is lowered due to non-uniform winding requirements
Solution Approach 1:
The patent optimizes the disposition angle of front end portions to be equal to or less than the pole arc angle, creating a uniform spatial configuration that allows consistent coil winding parameters across all salient poles. This parameter optimization maintains narrow intervals for high power generation while ensuring uniform winding conditions for efficient manufacturing
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances power generation efficiency by preventing power imbalances between phases and reduces manufacturing inefficiencies, achieving high output and efficiency while using cost-effective voltage regulators.
Implementation Method 1
by rotationally driving the rotor through the engine or the like, a rotation magnetic field by the permanent magnet crosses the coil, and an electromotive force is generated on the side of the stator
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A magnetic power generator (1) includes a stator and a rotor. The stator includes a plurality of salient poles (14) made up of a magnetic path section (15) around which a coil is wound and a protrusion section (16) that protrudes toward both sides of a front end of the magnetic path section. A plurality of permanent magnets (6) are attached to the rotor to face the salient poles (14). The salient poles (14) having the same phase are adjacently disposed in the circumferential direction, and a coil having the same phase is wound in series around the adjacently disposed salient poles (14) having the same phase. A front end portion (17) made up of a front end part of the magnetic path section (15) and the protrusion section (16) is configured so that a disposition angle (θ2) between the front end sections (17) having the same phase is equal to or less than the pole arc angle (θp) of the permanent magnet (6), and is greater than the disposition angle of the adjacent front end sections (17) having different phases. The magnetic path section (15) in the salient pole (14) adjacent to the salient pole (14) having a different pole is disposed on the same phase side of the center line of the front end section (17) of the salient pole (14) adjacent to the salient pole (14) having a different pole.