Auxiliary DC Bus Power Conversion for Peak-Limited AC Inputs
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Solution Overview
Problem
Standard electrical wiring systems are inadequate for non-standard devices requiring higher peak power demands, necessitating costly and time-consuming redesign or replacement to support higher peak current and voltage levels.
Innovation Solution
A power converter system that includes an auxiliary power source to supplement input power, a charger to convert AC power to DC power, and power converters to manage voltage and current levels, allowing the system to provide output power exceeding the peak limits of the input power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the electrical wiring system is redesigned or replaced to support higher peak power demand, then the power capacity is improved, but the implementation time and cost increase
Solution Approach 1:
The system performs preliminary action by charging the auxiliary power source during periods of low power demand. The charger converts input AC power to DC power and stores it in the auxiliary power source (battery) when the load demand is below the peak voltage limit, so that power is already available when high peak power demand occurs, eliminating the need for immediate wiring redesign
Solution Approach 2:
The auxiliary power source acts as an intermediary between the input power source and the load. It mediates power delivery by supplementing the charger's output during peak demand periods, enabling the system to deliver peak power exceeding the input power source's voltage limit without requiring changes to the input wiring infrastructure
2Power
If the electrical wiring system is redesigned or replaced to support higher peak power demand, then the power capacity is improved, but the implementation cost increases
Solution Approach 1:
The system performs preliminary action by charging the auxiliary power source during periods of low power demand. The charger converts input AC power to DC power and stores it in the auxiliary power source (battery) when the load demand is below the peak voltage limit, so that power is already available when high peak power demand occurs, eliminating the need for immediate wiring redesign
Solution Approach 2:
The auxiliary power source acts as an intermediary between the input power source and the load. It mediates power delivery by supplementing the charger's output during peak demand periods, enabling the system to deliver peak power exceeding the input power source's voltage limit without requiring changes to the input wiring infrastructure
3Adaptability or versatility
If standard electrical wiring systems are used, then the system complexity is reduced, but the adaptability to non-standard devices decreases
Solution Approach 1:
The power converter system achieves universality by being capable of serving both standard devices (within peak voltage limit) and non-standard devices (exceeding peak voltage limit). The controller dynamically manages power flow from the charger and auxiliary power source to accommodate varying load requirements, making the system adaptable to different device types without requiring separate wiring infrastructures
Solution Approach 2:
The system implements dynamics through the controller's real-time monitoring and adjustment of power flow. The controller dynamically switches between charging the auxiliary power source and drawing from it based on whether the load demand exceeds the peak voltage limit, enabling flexible adaptation to changing operational conditions and device requirements
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
Enables efficient and cost-effective support for non-standard devices with higher peak power demands by dynamically adjusting power levels, reducing the need for extensive system redesign and replacement.
Implementation Method 1
a charger coupled to the input and configured to convert the input AC power into first DC power having a first voltage level
Implementation Method 2
at least one power converter coupled to the DC bus and configured to convert DC power from the DC bus into the output power
Implementation Method 3
a voltage level of the AC output power is greater than the peak voltage limit of the input power source
Implementation Method 4
an auxiliary power source coupled to the DC bus and configured to provide second DC power having the first voltage level to the DC bus to supplement the first DC power provided by the charger in response to a voltage demand of the at least one load exceeding the peak voltage limit
Data Source
AI summary
A power converter system including an input configured to receive input AC power from an input power source, the input power source having a peak voltage limit, at least one output configured to provide output power to at least one load, a charger coupled to the input and configured to convert the input AC power into first DC power, a DC bus configured to receive the first DC power, at least one power converter configured to convert DC power from the DC bus into the output power, and an auxiliary power source coupled to the DC bus and configured to provide second DC power to the DC bus to supplement the first DC power provided by the charger in response to a voltage demand of the at least one load exceeding the peak voltage limit of the input power source.