Stator Sensor Assembly for Magnetic Induction and Temperature Control
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Solution Overview
Problem
Existing electric energy generating plants face issues where operating conditions can damage rotary electric machines, and there is a need for improved control mechanisms to manage magnetic induction and temperature values to prevent such damage.
Innovation Solution
The solution involves integrating a detecting device with both a magnetic probe and a temperature probe housed at the same detection point in the stator of the electric machine, allowing direct measurement of magnetic induction and temperature values, which are used by a control unit to adjust reactive power based on threshold values to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If operating conditions are not monitored, then the electric machine can operate without control, but the machine may be damaged by harmful operating conditions
Solution Approach 1:
The detecting device is installed in advance within the stator to monitor magnetic induction and temperature before damage occurs. The control device receives these measurements and preemptively adjusts operating conditions or alerts operators, preventing damage before it happens rather than responding after failure occurs.
Solution Approach 2:
The system establishes a closed-loop feedback mechanism where the detecting device continuously measures magnetic induction and temperature, transmits data to the control device, which then adjusts operating parameters or triggers alerts. This real-time feedback enables dynamic control to prevent harmful operating conditions.
2Measurement precision
If multiple separate detecting devices are used for magnetic induction and temperature, then comprehensive monitoring is achieved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent combines the magnetic induction detecting device and temperature detecting device into a single integrated detecting device housed within the same stator structure. This merging reduces the number of separate components, simplifies installation, and lowers overall system complexity while maintaining the ability to measure both magnetic induction and temperature parameters.
Solution Approach 2:
The detecting device is designed with multi-functionality, serving both as a magnetic induction sensor and a temperature sensor within a single unit. This universal design allows one device to perform multiple monitoring functions, reducing the need for separate specialized devices and simplifying the overall system architecture.
3Measurement precision
If the detecting device is installed deep within the stator, then direct measurement of magnetic induction is achieved, but installation difficulty and manufacturing complexity increase
Solution Approach 1:
The detecting device is segmented into modular components that can be independently manufactured and then assembled within the stator. This segmentation allows for easier manufacturing of individual parts and simplifies the installation process, as the modular components can be inserted and configured within the stator structure without requiring complex one-piece 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 approach enables precise control of the electric machine by adjusting reactive power based on magnetic induction and temperature measurements, reducing the risk of damage and enhancing the efficiency and safety of the electric energy generating plant.
Implementation Method 1
a magnetic probe (41) configured to detect a magnetic induction value and housed along the support
Implementation Method 2
a thermal probe (42) configured to detect a temperature value and housed along the support
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An electric machine assembly comprising an electric machine (5) having a stator (9) and a rotor (10) rotatable about an axis (A); and at least one detecting device (6) housed inside the stator (9) and comprising a magnetic probe (41) for measuring a magnetic induction (B) value of the electric machine (5), and a temperature probe (42) for measuring a temperature (T) value of the electric machine (5).