Power Packet Generation Device Preventing Waveform Deformation

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Solution Overview

Problem

In power packet transmission systems, multiple power sources transmitting to a single transmission line can cause interference, leading to deformation of waveforms and incorrect delivery of power packets to intended destinations.

Innovation Solution

A power packet generation device with switches and packet generators that control ON/OFF operations based on target voltages, using a selector to manage the state of switches to prevent collisions and ensure accurate transmission to multiple loads from different power sources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple power sources transmit power packets to a single transmission line simultaneously, then the power supply capacity and versatility are improved, but the waveform deformation and packet delivery accuracy deteriorate due to interference and collision between power packets

Engineering Contradiction:

Improvepower supply capacityVSAvoidpacket delivery accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements time-division multiplexing where multiple power sources transmit power packets in alternating time slots rather than simultaneously. The transmission control unit coordinates the periodic transmission intervals of different power sources, ensuring that only one power source transmits at a time while maintaining high overall power supply capacity through efficient time utilization.

Inventive Principle:

Principle #19Periodic action

2Adaptability or versatility

If multiple power sources transmit power packets to a single transmission line, then the power supply versatility is improved, but the waveform deformation occurs due to collision between power packets

Engineering Contradiction:

Improvepower supply versatilityVSAvoidwaveform accuracy

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The transmission control unit performs preliminary coordination and scheduling of transmission timing for multiple power sources before actual power packet transmission begins. By pre-establishing the transmission sequence and time slots for each power source, the system prevents waveform collision and deformation while maintaining the ability to serve multiple loads from different power sources.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3001526B1Power packet generation device, power router, and power network

Publication Date: 2019.07.03 KYOTO UNIV

Figure 1
Figure 2
Figure 3(a)~3(b)

AI summary

A mixer (power packet generation device) 2 includes switches 21A, 21B, packet generation means 28A, 28B, and a selector 29. The packet generator 28A (28B) causes the switch 21A (21B) to perform ON/OFF operation, based on a target voltage, and a voltage estimated as being applied to a load 4A (4B) in each of a state where a power packet is supplied to the load and a state where no power packet is supplied to the load. The selector 29 performs switching between a state where the packet generators 28A, 28B cause the switches 21A, 21B to perform ON/OFF operation, and a state where the packet generators 28A, 28B maintain the switches 21A, 21B in their OFF states.