Dual-Shaft Synchronous Machine for Kinetic Energy Accumulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current dynamic uninterruptible power supply systems (ADSI) are limited by the power and autonomy of kinetic energy accumulators, which are constrained by mechanical stresses and bearing capacities, leading to inefficiencies and increased costs when scaling up power requirements, especially in high-demand applications like data centers and high-tech industries.
Innovation Solution
The introduction of an ADSI configuration with a synchronous machine having two shaft ends inserted between two kinetic energy accumulators, allowing for double the unit power with a single alternator, and a regulation system that balances the speed of rotation during energy transfer, enabling efficient distribution of power and extending the life of the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power of kinetic energy accumulators is increased to meet higher power requirements, then the unit power of ADSI is improved, but the mechanical stresses and bearing capacities are exceeded, limiting the diameter and speed of rotation
Solution Approach 1:
The invention divides the single kinetic energy accumulator into two separate accumulators, each with its own rotating mass. This segmentation allows the system to achieve double the unit power without increasing the mechanical stress on individual components, as each accumulator operates within its own stress and bearing capacity limits.
Solution Approach 2:
The invention combines two kinetic energy accumulators into a single ADSI system with a common synchronous machine. By merging the energy storage capability of two accumulators while maintaining independent rotation, the system achieves doubled power output without proportionally increasing mechanical stresses on individual parts.
2Power
If several ADSIs are coupled in parallel to multiply the unit power available, then the total power is improved, but the system becomes more expensive and bulky
Solution Approach 1:
The invention merges two kinetic energy accumulators into a single integrated ADSI system that shares a common synchronous machine and control system. This consolidation achieves the power multiplication effect of parallel systems while reducing overall complexity, cost, and space requirements by eliminating redundant components.
Solution Approach 2:
The synchronous machine in the invention serves multiple functions: it acts as the driving motor during normal operation, as the alternator during power failures, and as the common coupling mechanism for both kinetic energy accumulators. This multi-functionality reduces the need for separate systems while maintaining high power capability.
3Use of energy by moving object
If the rotating mass rotates at high speed to accumulate more kinetic energy, then the energy storage capacity is improved, but the mechanical stresses increase according to the centrifugal forces law
Solution Approach 1:
By segmenting the total kinetic energy storage into two separate accumulators, each rotating mass can operate at optimized speeds that balance energy storage requirements with mechanical stress limits. The system achieves total energy capacity through the combination of two moderate-speed accumulators rather than one high-speed accumulator.
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 configuration doubles the unit power of the ADSI, reduces bulkiness, simplifies control, and extends the life of the system by balancing energy distribution between the accumulators, preventing premature exhaustion and reducing the need for additional transformers and connectivity systems.
Implementation Method 1
A kinetic energy accumulator, as described in this European patent EP 1,533,884, comprises a rotating mass in the form of a drum which turns freely around the shaft of the synchronous machine and which in normal times is - that is to say without power cut, is driven at a speed markedly higher than that of the synchronous machine
Implementation Method 2
The latter maintains a constant speed of rotation to generate an alternating current with a constant frequency which corresponds to the frequency of the alternating current of the network
Implementation Method 3
the ADSI is provided with an adjustable electromagnetic coupling between the rotating mass and the shaft of the alternator in order to be able to control the transfer of kinetic energy to the alternator and to drive it at the speed constant desired
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A dynamic uninterruptible power supply system including a synchronous machine with two shaft ends inserted between two kinetic energy accumulators for doubling the unit capacity is provided.