Parallel-Series Switch Circuit for Electromagnetic Actuator Current Reduction
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Solution Overview
Problem
Conventional electromagnetic actuators using multiple excitation coils require higher current for parallel operation, leading to increased energy consumption and heat generation.
Innovation Solution
A switch device controls the excitation coils to switch from parallel to series connection, reducing electrical current while maintaining electromagnetic actuation, using capacitors for stable operation, and employing mechanical or electrical switches to manage the transition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple excitation coils operate in parallel state, then electromagnetic actuation power is improved, but electrical current consumption increases
Solution Approach 1:
The patent applies dynamics by making the connection state of excitation coils changeable between parallel and series configurations. The switch device dynamically transitions the coils from parallel connection during actuation phase to series connection during sustaining phase, allowing the system to adapt its electrical characteristics to different operational requirements and resolve the contradiction between power and energy consumption.
Solution Approach 2:
The patent implements periodic action through two distinct operational phases: actuation phase where coils are connected in parallel to generate strong electromagnetic force, and sustaining phase where coils switch to series connection to maintain operation with reduced current. This periodic switching between connection modes allows the system to achieve both high power during actuation and energy savings during sustaining.
2Power
If multiple excitation coils operate in parallel state, then electromagnetic actuation power is improved, but heat generation increases
Solution Approach 1:
The switch device dynamically changes the connection configuration from parallel to series, making the system adaptable. During actuation, parallel connection provides high power; during sustaining, series connection reduces current and heat generation. This dynamic transition resolves the contradiction by allowing high power only when necessary.
Solution Approach 2:
The system periodically switches between actuation phase (parallel connection, high power, acceptable heat) and sustaining phase (series connection, reduced power, reduced heat). This periodic action allows the system to generate necessary heat only during brief actuation periods while minimizing heat generation during extended sustaining operations.
3Use of energy by moving object
If excitation coils switch to serial connection, then electrical current is reduced, but maintaining electromagnetic actuation becomes challenging
Solution Approach 1:
The switch device performs preliminary action by transitioning coils to series connection after the actuation phase is complete. This timing ensures that the electromagnetic actuation has already been established during the parallel phase, so the series connection only needs to maintain the already-established state rather than initiate it, making reliability maintenance feasible with reduced current.
Solution Approach 2:
The periodic switching between parallel and series connections ensures that electromagnetic actuation is fully established during the parallel actuation phase before transitioning to series sustaining mode. This timing strategy allows the system to build up sufficient magnetic field strength when high current is available, then maintain it with reduced current in series configuration.
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 energy consumption and heat generation while maintaining electromagnetic actuation, achieving better actuation power with energy savings and improved operational efficiency.
Implementation Method 1
electromagnetic actuators generating electromagnetic effect through electrical current excited coil
Data Source
Figure 1
AI summary
The present invention is a kind of switch device for the control of two or above two electromagnetic actuator, for driving coil such as electromagnetic brake, electromagnetic clutch, electromagnetic switch, electromagnetic relay, and electromagnetic valve, etc. to perform parallel actuation, so as to generate better electromagnetic actuation power, and through the control of switch device, take driving coil switch into serial connection state to reduce the electrical current of driving coil, but still maintain the operation of electrical actuation in order to save electricity and reduce the heat generated by electromagnetic actuator.