Serialized Claw Pole Rotor Magnetic Testing Device
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Solution Overview
Problem
Current methods for evaluating claw-pole generator rotor performance are complex, expensive, and prone to errors due to manual installation and uncontrollable factors, failing to accurately reflect the magnetic properties of the rotor assembled from claw-poles.
Innovation Solution
A magnetic performance measurement device using the magnetizing winding of the claw-pole generator rotor, with a serial slotted guide ring and angle-adjustable index plate, allows for one-time clamping and multi-position measurement, eliminating system errors and enabling direct testing of each part before motor assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the traditional generator performance bench test method is used to evaluate rotor performance, then the speed-current relationship curve can be obtained, but the test bench becomes complicated and expensive, and the whole assembly and disassembly process is required
Solution Approach 1:
The invention extracts the magnetizing winding from the complete generator assembly and uses it directly for magnetic properties measurement. By taking out only the necessary component (magnetizing winding with collector rings) and measuring it independently on a simplified device, the complex generator assembly and disassembly process is eliminated while maintaining measurement capability
Solution Approach 2:
The invention creates a simplified measurement system that copies only the essential functional elements needed for magnetic properties measurement - specifically the magnetizing winding and collector rings - rather than using the complete generator assembly. This copied subset enables measurement on a much simpler device
2Ease of operation
If manual installation process is used during testing, then the generator can be assembled and tested, but many uncontrollable factors are introduced and measurement accuracy is compromised
Solution Approach 1:
The invention segments the measurement process into two distinct phases: (1) individual component measurement of the magnetizing winding before assembly, and (2) assembled rotor measurement. This segmentation allows each phase to be optimized independently - the first phase eliminates manual installation errors by measuring the winding in isolation, while the second phase verifies overall rotor performance
Solution Approach 2:
The invention performs preliminary measurement of the magnetizing winding and its magnetic properties before the rotor assembly is completed. By conducting measurements in advance on the individual winding, the system identifies and corrects issues before they propagate through the assembly process, eliminating the need for repeated disassembly and reassembly
3Ease of manufacture
If standard samples are produced for magnetic property measurement, then the measurement can be performed, but the uneven performance caused by claw-pole manufacturing process is ignored and results cannot reflect overall rotor magnetic properties
Solution Approach 1:
The invention uses the magnetizing winding of the rotor itself as the measurement object, rather than requiring separate standard samples. The rotor's own winding serves the dual purpose of both magnetization source and measurement subject, enabling direct assessment of the actual rotor assembly's magnetic properties including all manufacturing variations
Solution Approach 2:
The invention changes the measurement parameter from indirect standard sample characteristics to direct rotor winding magnetic properties. By measuring the actual magnetic flux distribution in the rotor's own claw-poles and air gap, the system captures the true performance including manufacturing process variations, rather than relying on idealized standard samples
4Measurement precision
If multiple measurements at different positions are performed to eliminate system error, then measurement accuracy improves, but the testing process becomes more complex and time-consuming
Solution Approach 1:
The invention performs preliminary measurement of the magnetizing winding at multiple angular positions before final rotor assembly. By completing these measurements in advance and establishing baseline characteristics, the system eliminates the need for repeated multi-position measurements after assembly, saving time while maintaining accuracy through the use of the winding's own pre-characterized performance data
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 approach simplifies the testing process, reduces costs, and provides more accurate and sensitive measurements of magnetic properties, avoiding the influence of rotor assembly and manufacturing processes, while allowing for non-destructive testing of each part.
Implementation Method 1
Using the magnetizing winding of the claw-pole generator rotor itself
Implementation Method 2
a detection box and a support base, an adjusting ring, a axle sleeve and a serial slotted guidering which are sequentially arranged in the detection box
Data Source
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AI summary
A magnetic performance measuring device for serialized claw-pole generator rotors is consisted with: an excitation power supply turn-on mechanism, a rotor magnetic field detecting mechanism, a measuring position adjusting mechanism and a pressing mechanism that are successively and fixedly arranged, wherein the rotor magnetic field detecting mechanism including a detection box, a positioning base, an adjusting ring, a shaft sleeve and a serialized grooved magnetic conduction ring that are successively arranged in the detection box, and the adjusting ring and the shaft sleeve are used to position different models of tested rotors to achieve a serialized measurement. The claw-pole generator rotors are directly used as objects to be measured, the pressing mechanism is used to reduce the influence of the position fluctuation of the rotors during testing, and a measurement position may be changed by means of adjusting an angle of an indexing plate, which thus facilitates a plurality of measurements of the same rotor so as to eliminate system errors. A series of different models of rotors may be more conveniently and quickly measured without damaging the tested rotors. The measurement results are more sensitive and more directly reflect the pros and cons of the tested rotors. The measurement process is relatively simple and low-cost.