Motor Transformer Power Extraction for Stable Encoder Supply
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Solution Overview
Problem
Existing motor systems face challenges in providing stable power supply to external devices like encoders without the need for additional cabling, especially in environments where wireless power transmission is unreliable due to obstacles or machine orientation.
Innovation Solution
A motor design that extracts a part of the power supplied to the motor through a power line and uses a transformer to supply this power to external devices, eliminating the need for separate cabling by integrating power extraction and transmission within the motor's winding unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is supplied to the encoder through a cable connected to the driver, then the encoder receives stable power, but the cabling workload and cost increase
Solution Approach 1:
The patent merges the power supply function for the encoder with the motor structure by integrating a transformer and power extraction mechanism directly into the motor. This allows the motor to serve dual purposes: driving the load and providing power to the encoder, thereby eliminating the need for separate cabling while maintaining reliable power supply.
Solution Approach 2:
The motor is designed to perform multiple functions: it acts as both the actuator for the load and the power source for the encoder. The transformer integrated into the motor enables power extraction from the motor's own power supply, making the motor a universal component that handles both motion control and sensor power supply.
2Device complexity
If wireless power transmission is used to supply power to the encoder, then the cabling workload is reduced, but the power reception becomes unreliable due to obstacles or machine orientation
Solution Approach 1:
The patent introduces a transformer as an intermediary component integrated into the motor structure. This transformer acts as a mediator that converts the power supplied to the motor into a separate power output for the encoder, providing a reliable wired connection without requiring external cabling. The transformer enables power extraction at the source, eliminating the need for wireless transmission while maintaining connection simplicity.
3Reliability
If an auxiliary power supply is used for the encoder, then the encoder power supply is ensured when motor power is reduced, but the system complexity increases
Solution Approach 1:
The patent combines the auxiliary power supply function with the motor's existing transformer and power extraction mechanism. Instead of adding a separate auxiliary power supply system, the motor's integrated transformer continuously provides extracted power to the encoder, ensuring power availability during motor power reductions without increasing overall system complexity.
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 ensures stable power supply to external devices, reduces workload and costs associated with cabling, and maintains efficient operation of the motor by adjusting current values to meet the power requirements of the external devices.
Implementation Method 1
The transformer may include a primary coil to receive a part of power in the winding unit. The extractor may extract a part of the power in the winding unit using the transformer.
Data Source
AI summary
A motor receives power from a driver external to the motor through a power line. The motor includes an extractor that extracts a part of power supplied from the driver to the motor, and a supply unit that supplies the power extracted by the extractor to an external device. This structure allows stable power supply to the external device associated with the motor.