Permanent Magnet Rotor Magnetic Distribution Tester

The permanent magnet rotor magnetic distribution tester is a device for detecting magnetic flux and surface magnetic distribution. It is used to measure the accuracy of the permanent magnet rotor's magnetization, the uniformity of magnetization, and the accuracy of the magnetic sheet placement, ensuring that the magnetic field performance meets the requirements for motor operation. It is suitable for both laboratory research and development and motor production lines.

Permanent Magnet Rotor Magnetic Distribution Tester

Key Features

Technology

Specification

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Key Features

1. Magnetic Field Distribution Measurement: The tester can accurately measure the magnetic field distribution on the surface of the permanent magnet rotor, including key parameters such as the number of poles, polarity, peak value of the poles, angle, area, and width.

2. Data Processing and Analysis: The tester possesses powerful data processing and analysis capabilities. It can perform statistical analysis on the collected magnetic field data, calculating statistics such as maximum, minimum, average, and standard deviation to evaluate the uniformity and stability of the magnetic field distribution.

3. Magnetization (optional) and magnetic flux detection are integrated; the magnetic flux is measured immediately after magnetization.

4. Cooling water temperature setting, monitoring, chiller interlocks, etc.

Technology

Test items:

Magnetic flux, peak magnetic pole size, magnetic pole area, magnetic pole angle, full width at half maximum (FWHM) of the magnetic poles, and interlayer offset angle.

Suitable for motors:

Used in permanent magnet motor rotors.

Working Principle:

The permanent magnet rotor magnetic distribution tester scans the surface of the permanent magnet rotor under test using a probe to collect magnetic field data. A rotating chuck on the testing platform rotates the sample to achieve comprehensive magnetic field distribution measurement. The testing software controls the probe's movement, collects data, processes and analyzes the data, and ultimately generates magnetic field distribution maps and other relevant test results.

Specification

Technical/Performance Specifications	Power supply	AC220V/50HZ
Magnetic Distribution	Range	1-10KGs（0.1mT-1T）
	Sampling frequency	10kHZ
	Number of collection points	36,000 points/cycle
	Resolution	0.1Gs（0.01mT）
	Accuracy	±1% of the reading ±0.05% of the range
	Temperature coefficient	±(0.01% reading + 0.01Gs)/℃
	Number of channels	4 channels for maximum simultaneous acquisition

FAQ

What types of rotors can be tested with the Permanent Magnet Rotor Magnetic Distribution Tester?

This tester is specifically designed for permanent magnet motor rotors. It supports the testing of various rotor structures and pole configurations, enabling accurate measurement of surface magnetic field distribution, magnetic flux, pole angle, pole width, and inter-layer offset. It is suitable for both R&D environments and mass production lines.
What are the main advantages of using this magnetic distribution tester in motor production?

The tester helps manufacturers ensure consistent magnetization quality and precise magnet placement. By providing high-resolution magnetic field data and advanced statistical analysis, it allows early detection of magnetization non-uniformity, pole deviation, or assembly errors, ultimately improving motor performance, yield rate, and production efficiency.
Can the tester integrate magnetization and magnetic flux measurement in one process?

Yes. The tester optionally integrates magnetization and magnetic flux testing into a single workflow. Magnetic flux can be measured immediately after magnetization, reducing handling time and improving test efficiency. In addition, features such as cooling water temperature monitoring and chiller interlock ensure stable and safe operation during high-current magnetization processes.