Multi-Tap Reactor Inductance Control for Harmonic Reduction
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Solution Overview
Problem
Existing air conditioners with multiple internal units face high production costs and low applicability due to the need for multiple fixed inductance reactors, which fail to effectively reduce harmonic components and improve power factor.
Innovation Solution
A multi-tap reactor system that dynamically adjusts its output inductance value based on real-time motor speeds and phase currents of internal units, using a relay-connected multi-tap reactor to input the calculated inductance value into the power supply, thereby reducing harmonic components and eliminating the need for multiple reactors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single reactor with fixed inductance value is used for multiple internal units, then production cost is reduced, but the inductance value cannot be adjusted accordingly resulting in low applicability
Solution Approach 1:
The patent applies the dynamics principle by transforming a static fixed inductance reactor into a dynamic adjustable reactor. The multi-tap reactor with relay switching mechanism allows the inductance value to be dynamically adjusted based on the operating conditions of different internal units, thereby maintaining both cost efficiency and high adaptability across various应用场景.
Solution Approach 2:
The patent implements parameter changes by providing multiple tap points on the reactor with different inductance values. The relay switch selects different tap points based on the required inductance, enabling the reactor to change its electrical parameter (inductance value) to match different operational requirements while using a single physical reactor component.
2Adaptability or versatility
If multiple reactors are provided for multiple internal units, then applicability is improved, but production cost becomes extremely high
Solution Approach 1:
The patent applies universality by designing a single multi-tap reactor that can serve multiple internal units with different power requirements. The reactor performs multiple functions by switching between different inductance values, eliminating the need for separate dedicated reactors for each internal unit while maintaining optimal performance for each application.
Solution Approach 2:
The patent merges multiple reactor functions into a single multi-tap reactor component. By combining multiple inductance values into one reactor with selectable taps, the patent reduces the total number of reactor components from multiple separate reactors to a single integrated unit, thereby reducing production cost while maintaining full functionality.
3Reliability
If multiple reactors are installed for multiple internal units, then each unit gets dedicated reactor, but the number of components increases resulting in high production cost
Solution Approach 1:
The patent uses dynamics to enable a single reactor to adapt its inductance value dynamically based on which internal unit is operating. The relay switching mechanism allows the reactor to change its characteristics in real-time, maintaining optimal harmonic reduction effectiveness for different operating conditions without requiring multiple static reactor components.
Solution Approach 2:
The patent changes the inductance parameter of the reactor based on the operating requirements of different internal units. By providing multiple tap points with different inductance values and switching between them, the patent maintains the reliability and effectiveness of harmonic reduction while reducing the number of physical components from multiple reactors to a single multi-tap reactor.
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
The system effectively reduces harmonic components and improves power factor by dynamically adjusting the inductance value, lowering production costs and enhancing applicability without requiring multiple reactors.
Implementation Method 1
a multi-tap reactor... dynamically adjusts its output inductance value... using a relay-connected multi-tap reactor to input the calculated inductance value into the power supply
Data Source
AI summary
An output inductance value controlling method, apparatus, and computer device for a multi-tap reactor. A single output port of the multi-tap reactor is correspondingly connected to a single relay, and each relay is connected to a general power supply of all air conditioner internal units. When in use, an air conditioning system acquires a motor speed and a phase current of each air conditioner internal unit separately, and then calculates a sum of motor powers of all the air conditioner internal units according to the motor speeds and the phase currents. The system matches a basic inductance value required by the air conditioner internal units according to the sum of motor powers, sets a current output inductance value of the multi-tap reactor according to the basic inductance value, and inputs the output inductance value into the corresponding air conditioner internal units.