Dual Generator Phase Balance via Auxiliary Control
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Solution Overview
Problem
Existing dual generator systems face challenges in regulating phase-to-phase differences and balancing loads without increasing costs and reducing reliability due to the need for active filters and additional cooling.
Innovation Solution
A dual generator system comprising a main generator and an auxiliary generator, where the auxiliary generator is independently controlled to correct phase imbalances and supplement power, using a separate control unit to regulate the auxiliary generator's output and combine it with the main generator's output to maintain balanced power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If active filters are used to handle phase to phase differences, then phase balance is improved, but system cost and complexity increase due to additional cooling requirements
Solution Approach 1:
The invention extracts the phase balancing function from the main generator control and implements it separately through an auxiliary generator controlled by an AGCU. This separates the correction function from the main power generation function, allowing independent optimization of each system without requiring complex active filters and cooling systems in the main generator.
Solution Approach 2:
The power generation system is segmented into two independent generators: the main generator for primary power generation and the auxiliary generator for phase balancing. Each generator has its own control unit, allowing independent regulation of excitation currents to correct phase imbalances without affecting the main generator's operation.
2Manufacturing precision
If active filters are connected to the generator output, then phase to phase differences are corrected, but reliability decreases due to additional components requiring cooling
Solution Approach 1:
The phase correction function is extracted from the main generator system and implemented through a separate auxiliary generator. This eliminates the need for active filters connected to the main generator output, reducing the number of components that require cooling and thereby improving overall system reliability.
Solution Approach 2:
The auxiliary generator serves itself and the main generator by providing automatic phase balancing through its own control unit. The AGCU independently monitors and adjusts the auxiliary generator's excitation to correct phase imbalances, creating a self-regulating system that doesn't rely on additional active components in the main generator path.
3Power
If excitation current is varied to regulate generator output, then power output is controlled, but phase to phase differences caused by unbalanced load cannot be corrected
Solution Approach 1:
The control function is segmented between two generators: the main generator's excitation control regulates overall power output, while the auxiliary generator's excitation control specifically addresses phase balancing. This segmentation allows both power regulation and phase correction to be achieved simultaneously without interference.
Solution Approach 2:
The auxiliary generator serves multiple functions: it can supplement power output when needed and simultaneously correct phase imbalances. By varying the auxiliary generator's excitation current based on AGCU monitoring, the system achieves both power regulation and phase balancing through a single additional component.
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 solution effectively corrects phase-to-phase imbalances and supplements power without the need for active filters, reducing costs and improving reliability by using a dual generator system with an auxiliary generator control unit to regulate and combine outputs.
Implementation Method 1
Electrical generators are widely employed to convert mechanical energy to electrical energy for distribution to one or more loads
Data Source
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AI summary
A dual generator system, 14, includes a main generator, 16, and an auxiliary generator, 18. The main generator, 16, generates at least a first phase main output and a second phase main output. The auxiliary generator, 18, generates at least a first phase auxiliary output and a second phase auxiliary output, wherein the first phase auxiliary output is combined with the first phase main output to generate a first phase main output. An auxiliary generator control unit (AGCU), 22, the first phase combined output the second phase combined output and in response independently regulates the first phase auxiliary output and the second phase auxiliary output.