Electric Fracturing Layout With Shared Frequency Converter Control
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Solution Overview
Problem
Traditional fracturing operations using diesel engines are bulky, heavy, polluting, costly, and occupy large areas, which is not suitable for the modern trend of low energy consumption, low noise, and low emission requirements.
Innovation Solution
An electrically driven fracturing system with a centralized frequency converter apparatus connected to multiple fracturing units, optimizing layout and reducing the number of converters, thus minimizing site occupation and improving transportation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a diesel engine and gearbox are used to drive the fracturing pump, then the system can operate independently without external power, but the volume and weight of the system increase significantly
Solution Approach 1:
The patent replaces the mechanical diesel engine-gearbox system with an electrical motor system. The fracturing pump is driven by an electric motor instead of a diesel engine, eliminating the need for a mechanical transmission system (gearbox, clutch, etc.). This substitution dramatically reduces the weight and volume of the power transmission components while maintaining the pump's driving capability.
2Object-affected harmful factors
If a diesel engine is used as the power source, then the system can operate in remote locations, but pollution and noise increase significantly
Solution Approach 1:
The patent substitutes the diesel engine with an electric motor, replacing a combustion-based mechanical system with an electromagnetic system. This eliminates exhaust emissions and significantly reduces noise levels, as electric motors operate quietly without combustion processes. The system remains adaptable to remote locations through the use of portable power sources or extended cable systems.
3Area of stationary object
If multiple frequency converter apparatuses are used for each fracturing apparatus, then each unit can operate independently, but the area occupied and transportation complexity increase
Solution Approach 1:
The patent combines multiple frequency converter functions into a single shared frequency converter apparatus that can control multiple electric motors simultaneously. This consolidation reduces the total number of frequency converters needed, thereby reducing the equipment footprint and simplifying transportation. The shared frequency converter maintains the ability to independently control each motor through separate control channels, preserving operational independence while reducing hardware redundancy.
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 achieves reduced site occupation, improved transportation efficiency, and lower environmental impact while maintaining operational stability and efficiency.
Implementation Method 1
the rectifier unit is configured to convert alternating current into direct current
Implementation Method 2
the inverter units are configured to convert direct current into alternating current
Data Source
AI summary
An electrically driven fracturing system is provided. The electrically driven fracturing system includes: one or more frequency converter apparatuses; and a plurality of electrically driven fracturing apparatuses configured to pressurize and output fluid. One of the one or more frequency converter apparatuses is connected with multiple ones of the plurality of electrically driven fracturing apparatuses, respectively, and the frequency converter apparatus is configured to adjust pressure and flow rate of fluid output by the multiple electrically driven fracturing apparatuses.