Spindle Power Supply Circuit for Stable Non-Contact Voltage
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Solution Overview
Problem
Conventional external power supply systems for spindles face challenges in providing stable output voltages and ensuring non-contact energy transfer with data transmission, while existing solutions have limitations in efficiency and practicality.
Innovation Solution
An external power supply system comprising a tool holder, rectifier circuit, overvoltage protection circuit, and buck/boost converter, which generates an electric field with a power factor for non-contact power transfer and includes integral and derivative control functions to manage the transmission level, ensuring stable output voltage to spindles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional external power supply systems are used for spindles, then power transfer can be achieved, but output voltage stability is insufficient and energy conversion efficiency is limited
Solution Approach 1:
The patent employs a buck/boost converter to dynamically adjust voltage parameters, enabling stable output voltage despite variations in input power. The converter modifies electrical parameters in real-time to maintain optimal operating conditions, resolving the contradiction between voltage stability and energy efficiency
Solution Approach 2:
The system incorporates feedback control mechanisms that monitor output voltage and adjust power conversion accordingly. This closed-loop control ensures stable output while optimizing energy conversion efficiency by responding to actual system conditions rather than operating with fixed parameters
2Ease of operation
If contact-based power transfer is used, then simple connection is achieved, but non-contact energy transfer with data transmission cannot be realized
Solution Approach 1:
The patent implements a multi-functional power supply system that can operate in both contact-based and non-contact-based modes. The system universally supports power transfer and data transmission through electromagnetic coupling, eliminating the need for physical contact while maintaining operational simplicity through automated mode selection
3Loss of energy
If high power transfer is achieved, then energy conversion efficiency improves, but voltage fluctuation and overvoltage risks increase
Solution Approach 1:
The patent incorporates overvoltage protection circuits and voltage regulation mechanisms that prepare the system in advance to handle voltage fluctuations. These protective elements are built into the power supply architecture to cushion against potential overvoltage conditions before they can cause damage, allowing high power transfer with protected stability
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
The system achieves efficient energy conversion up to 90% and ensures stable output voltages for spindles, enabling non-contact energy transfer and data transmission, addressing the limitations of existing solutions.
Implementation Method 1
a drive system which generates an electric field with a power factor and transfers the electric field to a positive electrode and a negative electrode
Implementation Method 2
The rectifier circuit is used to convert the external power source into a rectified output signal through step-down transformation
Data Source
AI summary
An external power supply system for spindles is revealed. The external power supply system includes a tool holder, a rectifier circuit, an overvoltage protection circuit. and a buck/boost converter. The tool holder receives an external power source of a spindle while the rectifier circuit converts the external power source into a rectified output signal with a power factor through step-down transformation. The overvoltage protection circuit is used to check whether the rectified output signal is larger than an overvoltage signal for outputting an operating potential or a non-operating potential. The buck/boost converter is used for receiving the rectified output signal with the power factor and converting the rectified output signal to an output voltage according to the power factor. Then the output voltage is provided to a load of a low voltage power supply, a high voltage power supply, or a constant voltage power supply.