DC-to-AC Power Converter Circuit with Phase-Diverse Channels
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Solution Overview
Problem
Conventional AC-DC conversion techniques require peak power input to be twice the average power, leading to inefficient power handling and increased design complexity when converting between multiple channels, particularly in subscriber line interface circuits.
Innovation Solution
The implementation of a power converter circuit that generates balanced AC signals from a DC voltage by using two power converters with output signals that differ by an odd multiple of ninety degrees, allowing for efficient DC-to-AC and AC-to-DC power conversion, where the peak power equals the average power and enabling simultaneous operation of multiple channels with reduced input requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional AC-DC conversion techniques are used, then power conversion between multiple channels is achieved, but the peak power input becomes twice the average power, leading to inefficient power handling and increased design complexity
Solution Approach 1:
The patent divides the power conversion system into multiple independent power converter channels, where each channel converts DC to AC independently. This segmentation allows each channel to operate at lower power levels with peak power equal to average power, rather than requiring a single channel to handle the total power with peak power twice the average. The segmentation resolves the contradiction by distributing the power conversion task across multiple simpler channels.
Solution Approach 2:
The patent combines multiple power converter channels to achieve multi-channel AC output. By merging the outputs of multiple channels that each produce AC signals with peak power equal to their average power, the system achieves efficient overall power conversion. The combining of channels allows the system to provide multi-channel AC output without requiring any single channel to handle peak power twice the average power.
2Productivity
If conventional power conversion is used for multiple channels, then multi-channel AC output is achieved, but the input power requirement increases and power handling efficiency decreases
Solution Approach 1:
The patent segments the multi-channel power conversion task into multiple independent channels, each handling a portion of the total power. Each channel converts DC to AC with peak power equal to its average power requirement, rather than all channels sharing a common peak power budget that would require peak power twice the average. This segmentation enables multi-channel operation with reduced overall input power requirements.
Solution Approach 2:
The patent changes the operational parameters of the power conversion system by operating each channel at a different phase angle (e.g., 0 degrees, 90 degrees, 180 degrees, 270 degrees). This parameter change allows simultaneous operation of multiple channels without requiring peak power twice the average power in any single channel, thereby reducing the overall input power requirement while maintaining multi-channel productivity.
3Reliability
If peak power is set to twice the average power for conventional conversion, then sufficient power headroom is provided, but power handling efficiency decreases and design complexity increases
Solution Approach 1:
The patent segments the power handling requirement across multiple channels, where each channel is designed to handle peak power equal to its average power requirement. This segmentation eliminates the need for any single channel to have peak power capability twice the average, thereby improving power conversion efficiency in each channel while maintaining sufficient power handling capability through the combined output of multiple channels.
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 approach allows for efficient power conversion where the average power for two channels is twice the average power of a single channel, simplifying input power requirements and optimizing power handling in subscriber line interface circuits.
Implementation Method 1
a first power converter coupled between a direct-current (DC) node and a first pair of output nodes. The first power converter may be configured to provide a first power signal having a first phase to the first pair of output nodes
Data Source
AI summary
In some embodiments, a power converter circuit includes a first power converter coupled between a direct-current (DC) node and a first pair of output nodes. The first power converter may be configured to provide a first power signal having a first phase to the first pair of output nodes. The power converter circuit may also include a second power converter coupled between the DC node and a second pair of output nodes. The second power converter may be configured to provide a second power signal having a second phase to the second pair of output nodes. The second phase and the first phase may differ by an odd multiple of ninety degrees.