Motor Driving Device Power Source Selector
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Solution Overview
Problem
Current motor driving methods utilizing non-electrical power sources, such as solar or heat energy, suffer from low power conversion efficiency, limiting the rotational speed of motors and often failing to meet operational requirements.
Innovation Solution
A motor driving method and device that selectively uses either a first electrical power converted from a non-electrical source or a second electrical power from a generator, based on the motor's rotation speed, to optimize power usage and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a non-electrical power source is converted to electrical power using a converter, then the motor can operate with alternative energy sources, but the power conversion efficiency is low and the rotational speed is limited
Solution Approach 1:
The patent combines two power sources (non-electrical power source via converter and external electrical power source) into a unified power supply system for the motor. The selector switch enables the motor to receive power from either source, merging the advantages of both power sources to achieve both adaptability and sufficient power output.
Solution Approach 2:
The motor system is designed to accept multiple types of power inputs (non-electrical energy converted to electrical power, and direct electrical power). This multi-functionality allows the system to operate with different power sources depending on availability and performance requirements, resolving the contradiction between adaptability and power output.
2Loss of energy
If only a non-electrical power source converter is used, then power conservation is achieved, but the power output is insufficient for high-speed operation
Solution Approach 1:
The system dynamically switches between power sources based on operational requirements. The selector switch allows the system to adapt its power configuration in real-time, choosing the non-electrical power source for conservation-oriented operation and the external electrical power source when high power output is needed, thus resolving the static contradiction between power conservation and power output.
3Area of stationary object
If the converter dimension is reduced, then the device size is minimized, but the power generation capability per unit dimension is limited
Solution Approach 1:
By combining the compact converter with an external power source capability, the system achieves high power output without requiring the converter itself to be large. The external power source supplements the converter's limited power generation capability, allowing the converter to remain small while the system as a whole delivers sufficient power for high-speed motor operation.
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 allows for efficient operation and power conservation by providing sufficient power for both low-speed and high-speed motor rotations, enhancing the motor's performance and heat dissipation capabilities.
Implementation Method 1
The converter 11 receives and converts a non-electrical power source 13, such as solar or heat energy, to an electrical power
Implementation Method 2
the motor 12, such that a DC fan device 10 is allowed to provide heat dissipation
Data Source
AI summary
The invention provides a motor driving device including a converter receiving and converting a non-electrical power source, such as light, heat, mechanical or chemical energy, to a first electrical power, and a selector electrically connected between the converter and a motor, for receiving the first electrical power and a second electrical power from a power source, such as an electrical power generator, and outputting the first or second electrical power according to a rotation speed of the motor.