Linear Transport Energy Transfer With Pulsed Coil Control
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Solution Overview
Problem
Existing linear transport systems face inefficiencies in energy transmission from a stationary unit to a movable unit, particularly in controlling energy coils to manage power levels and prevent thermal overload, while ensuring reliable data transmission.
Innovation Solution
The method involves using control electronics to convert energy quantity signals into pulse-pause ratios, controlling energy transmission coils based on these ratios, and employing half-bridges with switches to manage current flow directions, optimizing energy transmission by adjusting counter values to regulate power levels and synchronize energy transfer with position data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If energy transmitting coils are continuously energized to ensure reliable energy transfer, then energy transmission reliability is improved, but thermal load on the coils increases
Solution Approach 1:
The patent applies periodic pulsed energization of energy transmitting coils instead of continuous operation. The control unit activates coils in alternating sequences based on the position of the movable unit, allowing coils to be energized only when needed for energy transfer. This periodic action maintains energy transmission reliability by ensuring coils are active during transfer periods while reducing thermal load by providing cooling intervals between pulses.
2Power
If multiple energy transmitting coils are operated simultaneously to increase power transmission, then power delivery is improved, but thermal load and energy waste increase
Solution Approach 1:
The patent segments the energy transmission system into multiple discrete coils arranged along the guide rail. Instead of operating all coils simultaneously, the control unit selectively activates only the specific coil or coils positioned near the movable unit. This segmentation allows power transmission capability to be maintained through coordinated activation of individual coils while minimizing thermal load by limiting the number of active coils at any given time.
Solution Approach 2:
The system dynamically adjusts which coils are activated based on the real-time position of the movable unit. The control unit continuously monitors position and dynamically switches between different coil configurations, activating only the coils currently needed for energy transfer. This dynamic operation maintains optimal power transmission while reducing overall thermal load compared to static simultaneous operation of all coils.
3Temperature
If energy transmitting coils are activated based on position data to reduce thermal load, then thermal management is improved, but system complexity increases
Solution Approach 1:
The patent implements a feedback-based control system where position data from sensors tracking the movable unit is continuously fed to the control unit. The control unit processes this feedback information and automatically adjusts coil activation patterns accordingly. This feedback mechanism enables intelligent thermal management through position-based coil selection while keeping the control logic relatively simple, as the system responds automatically to position changes without requiring complex predictive algorithms.
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 enables efficient energy transfer, reduces thermal load, and ensures reliable data transmission by optimizing energy coil operation based on power requirements and position, thereby improving the overall performance of the linear transport system.
Implementation Method 1
energy transmitting coils (125), each energy transmitting coil (125) being assigned control electronics (123)... to transfer energy from the stationary unit (111) to the moving unit (103)
Implementation Method 2
The linear motor comprises a stator and a rotor. The stator can have at least one motor module arranged stationary along the guide rail with one or more drive coils, while the movable unit is arranged on a carriage and can have one or more magnets. By energizing the drive coils, a force can be generated on the magnets of the movable unit
Data Source
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AI summary
The invention relates to a method for transferring energy from a stationary unit (111) to a movable unit (103) of a linear transport system (101). The linear transport system (101) comprises a guide rail (105) for guiding the movable unit (103), a plurality of stationary units (111), and a linear motor (107) for driving the movable unit (103) along the guide rail (105). The linear motor (107) comprises a stator (109) and a rotor (113), the stator (109) comprising the stationary units (111) which each have one or more drive coils (135). The rotor (113) is positioned on the movable unit (103) and comprises one or more magnets (117). The stationary units (111) each comprise one or more energy-transmitting coils (125), each energy-transmitting coil (125) having a control electronic system (123). The movable unit (103) comprises at least one energy-receiving coil (127). The control electronic systems (123) of the energy-transmitting coils (125) perform the following steps: - reading in an energy quantity signal for the energy-transmitting coil (125) in question; - converting the energy quantity signal into a pulse-pause ratio in order to control the energy-transmitting coil (125); - controlling the energy-transmitting coil (125) on the basis of the pulse-pause ratio.