Harmonic Suppression System Master Controller Switching Loss
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Solution Overview
Problem
The existing harmonic suppression devices experience increased switching loss when multiple devices are used in parallel, leading to difficulties in achieving power saving.
Innovation Solution
A harmonic suppression system where one device acts as a master to collect information from others and determine which device should generate the harmonic suppression current, optimizing the number of devices involved to minimize switching loss and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple harmonic suppression devices are attached to suppress harmonic currents, then the harmonic suppression capability is improved, but the switching loss increases
Solution Approach 1:
Multiple harmonic suppression devices are merged into a coordinated system where one master device collects information from all devices and determines which device should generate the harmonic suppression current. This combining approach allows the system to achieve the harmonic suppression capability of multiple devices while reducing the switching loss by activating only one device at a time to generate the suppression current.
2Reliability
If multiple harmonic suppression devices operate independently, then the harmonic suppression effectiveness is improved, but the power consumption increases
Solution Approach 1:
The master harmonic suppression device collects information from all devices in the system and uses this feedback to determine which device should generate the harmonic suppression current. This feedback mechanism ensures that the system maintains effective harmonic suppression while optimizing power consumption by strategically selecting which device operates based on real-time system information.
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 reduces the overall switching loss and achieves power saving by strategically determining which devices generate the harmonic suppression current, thereby optimizing the system's efficiency.
Implementation Method 1
the power converter 2 generates a harmonic suppression current by pulse width modulation according to an operation instruction received from the controller 3
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A harmonic suppression device (1) includes a power converter (2) that generates a harmonic suppression current that is an electric current for suppressing a harmonic current flowing in a power line (9) and outputs the generated harmonic suppression current to the power line, a communication unit (4) that exchanges signals with other harmonic suppression devices, and a controller (3) that controls the power converter (2) based on a signal received by the communication unit (4).