Textile Machine Motor Energy Distribution via Segmented DC Buses
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Solution Overview
Problem
Textile machines, such as weaving and tufting machines, face challenges in efficiently distributing mechanical load and managing energy exchange between main and slave driven systems, leading to potential overloads and energy losses in power supply systems.
Innovation Solution
A textile machine design featuring multiple main motors mechanically coupled to each other and separate energy exchange units for each motor, allowing for enhanced energy distribution and management between power supply systems and DC voltage bus systems, with slave motors connected to these bus systems for efficient energy recovery and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single power supply system and single DC voltage bus system are used for all motors, then the system structure is simple, but energy losses increase and overload risks occur during energy recovery operations
Solution Approach 1:
The patent divides the single power supply system into multiple independent power supply systems, each serving a specific main motor and its associated slave motors through separate DC voltage bus systems. This segmentation allows independent energy management for each motor group, enabling energy recovered from one main motor to be directly utilized by other main motors without passing through a common bus, thereby reducing energy losses while maintaining manageable system complexity through modular architecture
2Productivity
If multiple main motors are mechanically coupled to drive the main driven system, then mechanical load distribution is enhanced, but the complexity of coordinating energy management between motors increases
Solution Approach 1:
Each main motor is equipped with its own dedicated power supply system and DC voltage bus system, creating independent energy management zones. This allows each motor to operate autonomously in terms of energy supply and recovery, eliminating the need for complex centralized coordination while still achieving mechanical load distribution through the mechanically coupled main driven system
Solution Approach 2:
Each main motor unit serves itself by having its own power supply system that can independently manage energy conversion, storage, and distribution. During energy recovery, each motor unit can independently convert mechanical energy back to electrical energy and store it in its own DC voltage bus system, enabling self-sufficient operation without requiring complex inter-coordination with other motor units
3Use of energy by moving object
If energy from one main motor is fed back to a common DC voltage bus, then energy recovery is achieved, but voltage fluctuations and potential overloads occur affecting other motors
Solution Approach 1:
The patent isolates energy recovery operations to individual DC voltage bus systems associated with each main motor, preventing voltage fluctuations from one motor from affecting others. Each power supply system independently manages its own DC voltage bus, allowing energy recovery to occur without causing system-wide voltage instability or overloads, thereby maintaining reliable operation across all motors
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 design enhances mechanical load distribution, reduces energy losses, and ensures reliable energy supply even in case of failures by allowing energy exchange between DC voltage bus systems, maintaining optimal voltage levels and preventing overloads.
Implementation Method 1
an energy exchange unit for transforming an AC voltage supplied by a power supply system, for example the mains or any kind of power plant, into a DC voltage supplied to a DC voltage bus system
Implementation Method 2
The main motor can be operated in an energy recovery mode for supplying energy to the DC voltage bus system via the main motor unit
Data Source
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AI summary
A textile machine comprises a main driven system (MSY) driven by a plurality of main motors (MM1, MM2) mechanically coupled to each other by means of the main driven system (MSY) and/or for driving the main driven system (MSY), a plurality of slave driven systems (SY), each slave driven system (SY) being driven by at least one slave motor (SM1, SM2), an energy supply/control arrangement (EA) for supplying energy to the main motors (MM1, MM2) and the slave motors (SM1, SM2) and for controlling the flow of energy between a power supply system (PSS) and the main motors (MM1, MM2) and the slave motors (SM1, SM2), the energy supply/control arrangement (EA) comprising: a first energy exchange unit (EEU1) for exchanging energy between the power supply system (PSS) and a first DC voltage bus system (DCB1), a first main motor unit (MU1) connecting a first one of the main motors (MM1, MM2) to the first DC voltage bus system (DCB1) for applying a drive voltage to the first main motor (MM1), a second energy exchange unit (EEU2) for exchanging energy between the power supply system (PSS) and a second DC voltage bus system (DCB2), a second main motor unit (MU2) connecting a second one of the main motors (MM1, MM2) to the second DC voltage bus system (DCB2) for applying a drive voltage to the second main motor (MM2), a controller (CON) controlling the first main motor unit (MU1) for applying the drive voltage to the first main motor (MM1) and controlling the second main motor unit (MU2) for applying the drive voltage to the second main motor (MM2), wherein the slave motors (SM1, SM2) comprise at least one first slave motor (SM1) connected to the first DC voltage bus system (DCB1) by means of an associated first slave motor unit (SU1) for applying a drive voltage to the first slave motor (SM1) and comprising at least one second slave motor (SM2) connected to the second DC voltage bus system (DCB2) by means of an associated second slave motor unit (SU2) for applying a drive voltage to the second slave motor (SM2).