Integrated XRAM Stator Windings for Compact Current Multiplication
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Solution Overview
Problem
Existing pulsed power systems using XRAM circuit techniques require external energy storage elements, leading to increased space and weight, and inefficiencies in power transfer.
Innovation Solution
The integration of XRAM windings within the stator of an electrical machine, coupled with switching elements for current multiplication, allows for internal energy storage and efficient power transfer to pulsed loads without the need for external coils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If external energy storage elements are used in XRAM pulsed power systems, then current multiplication capability is achieved, but system weight and size increase significantly
Solution Approach 1:
The patent combines the energy storage function with the generator structure by integrating inductive storage coils into the generator stator. This merging eliminates the need for separate external energy storage elements, achieving current multiplication while reducing system weight and size. The storage coils are positioned within the generator housing and share the magnetic circuit with the generator windings.
Solution Approach 2:
The generator structure is designed to serve multiple functions: generating electrical power and simultaneously storing energy in its stator windings. The stator windings act as both the generator coil and the energy storage element, eliminating the need for dedicated external storage components and reducing overall system complexity and weight.
2Power
If external energy storage elements are used in XRAM pulsed power systems, then current multiplication is achieved, but system complexity and space requirements increase
Solution Approach 1:
The patent merges the energy storage function with the generator structure by integrating inductive storage coils into the generator stator. This merging eliminates the need for separate external energy storage elements, achieving current multiplication while reducing system weight and size. The storage coils are positioned within the generator housing and share the magnetic circuit with the generator windings.
Solution Approach 2:
The generator structure is designed to serve multiple functions: generating electrical power and simultaneously storing energy in its stator windings. The stator windings act as both the generator coil and the energy storage element, eliminating the need for dedicated external storage components and reducing overall system complexity and weight.
3Power
If external energy storage elements are used in XRAM pulsed power systems, then power conversion is achieved, but power transfer efficiency decreases
Solution Approach 1:
The patent extracts the energy storage function from external components and relocates it directly into the generator stator windings. This eliminates the need for power transfer between external storage elements and the generator, reducing resistive losses and improving overall power transfer efficiency. The storage coils are electrically connected directly to the generator output terminals.
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 enables a compact, high-power-density system with reduced weight and size, achieving efficient current multiplication and effective power transfer to pulsed loads.
Implementation Method 1
The stator has inductive storage coils for storing energy inductively
Implementation Method 2
XRAM circuit techniques are known in the prior art for producing a current multiplication of a generator or source output
Data Source
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AI summary
An electrical machine includes as part of its stator XRAM windings for multiplying current output of the machine. The XRAM windings are coupled to switching elements that are configured to produce current multiplication for output to an external load. The XRAM windings may be in slots in the stator, or may be elsewhere in the stator, operatively coupled to other windings in the stator. The stator may be operatively coupled to a rotor and hence to an inertial energy source, such as a flywheel on the same shaft as the elements of the electrical machine. Short circuiting of select windings of the machine can advantageously cause a shifting and concentration of a machine airgap flux of the machine over other windings.