Controlling Unit Voltage Converter for AC Power Delivery
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Solution Overview
Problem
Existing controlling units for AC power consuming devices, such as thrusters and winches, face challenges with insufficient output voltage from DC power sources, leading to high and unsafe current requirements, which are undesirable from both safety and constructional perspectives.
Innovation Solution
Incorporation of a voltage converter that increases the DC power source voltage, allowing for higher voltage AC power delivery at lower currents, along with monodirectional current flow to prevent backflow, and additional features like voltage and current limiters to manage power distribution efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the DC power source voltage is kept at the original level, then the power delivery system remains simple, but the current becomes excessively high and unsafe
Solution Approach 1:
The power delivery system is segmented into multiple functional modules: DC power source input means, voltage converter, current transformer, and AC power consuming device output means. This segmentation allows each module to perform its specific function optimally while maintaining overall system safety and reliability.
Solution Approach 2:
A voltage converter is introduced as an intermediary component between the DC power source and the current transformer. This intermediary converts the DC voltage to a higher level before current transformation, thereby reducing the current magnitude and eliminating safety hazards associated with high current direct connection.
2Object-affected harmful factors
If a voltage converter is added to increase DC voltage, then the current is reduced to safe levels, but the device complexity increases
Solution Approach 1:
The voltage converter serves as a necessary intermediary that transforms DC voltage to a higher level, effectively reducing the harmful high current effect. Although this adds a component, it eliminates the safety hazard and enables safe power delivery to AC devices.
Solution Approach 2:
The system changes the voltage parameter of the DC power source through the voltage converter, transforming it from a low-voltage high-current state to a high-voltage low-current state. This parameter transformation reduces harmful effects while maintaining power delivery capability.
3Productivity
If power is prioritized for AC devices over battery charging, then AC device operation is ensured, but battery may become overloaded
Solution Approach 1:
The controlling unit dynamically adjusts power distribution between AC devices and battery charging based on real-time system conditions. The controller can shift power allocation priorities to ensure AC devices receive sufficient power while preventing battery overload, creating a dynamic and adaptive power management system.
Solution Approach 2:
The system incorporates feedback mechanisms where the controller monitors battery status and power delivery conditions, then adjusts power distribution accordingly. This feedback loop ensures that AC devices receive priority power delivery when needed while automatically preventing battery overload conditions.
4Stability of the object's composition
If monodirectional current flow is implemented, then backflow is prevented, but the circuit design becomes more complex
Solution Approach 1:
The system extracts and implements monodirectional current flow control in each specific circuit path separately. By designing each connection (DC input, battery connection, AC output) with unidirectional current flow requirements, the system prevents backflow and maintains stability without requiring complex overall circuit redesign.
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 enhances safety and constructional ease by enabling the provision of required power at lower currents, prioritizing AC device power over battery charging, and optimizing battery charging to prevent overloading, thereby ensuring efficient and safe electrical power management.
Implementation Method 1
the voltage converter being designed to convert the direct current power of the second voltage received by the direct current power source input means to converted direct current power having the first voltage
Implementation Method 2
an electrical current transformer, capable of transforming direct current of the first voltage to modulated multiple phase alternating output current
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
Described is an electrical power controlling unit (1) for controlling electrical power delivery received from a direct current power source (2) to an electrical power consuming device (3), the alternating current power consuming device being driven by modulatable multiple phase alternating output current at a first voltage provided by the controlling unit, the controlling unit comprising an electrical current transformer (4), multiple outlet conductors (5) for connecting the transformer to the electrical power consuming device, command input means (6) to receive controlling commands from a controller interface (7), battery power input means (8), direct current power source input means (10) for receiving direct current from the electrical power source, a voltage converter (11), first conducting means (12) connecting the voltage converter to the current transformer, and second conducting means (13) connecting the voltage converter to a converted direct current power outlet (14)..