Switchgear Control Device Wide Voltage Range Segmentation
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Solution Overview
Problem
Conventional switching controllers can only provide high output powers within a limited control voltage range, making it necessary to stock multiple switchgear units and limiting the operability of mobile equipment on various electrical networks, as they are designed for specific and small control voltage ranges.
Innovation Solution
A control device for an electromagnetic drive of a switchgear that includes multiple power supply units, each configured to provide sufficient electrical power within a specified input voltage range, with a control unit that automatically selects the appropriate power supply units based on the input voltage, allowing for operation over a wide voltage range without the need for PWM, thereby improving EMC behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional switching controllers are designed for specific control voltage ranges, then they can provide high output powers within those ranges, but they cannot operate on multiple electrical networks and require multiple switchgear units to be stocked
Solution Approach 1:
The power supply unit is divided into multiple independent power supply circuits, each designed to operate within a specific input voltage range. The control device includes a first power supply circuit for a first input voltage range and a second power supply circuit for a second input voltage range, allowing the system to provide high output power across multiple voltage ranges by selecting the appropriate circuit segment
Solution Approach 2:
The control device is designed with multi-functionality by incorporating multiple power supply circuits that can handle different input voltage ranges. The electromagnetic drive is configured to be operable with different power supply circuits depending on the input voltage, making the control device universal and adaptable to various electrical networks without requiring separate switchgear units for each voltage range
2Adaptability or versatility
If multiple power supply units are added to cover wide voltage ranges, then adaptability improves, but device complexity increases
Solution Approach 1:
The control device incorporates dynamic selection capability where the electromagnetic drive can be switched between different power supply circuits based on the detected input voltage. This dynamic adaptation allows the system to automatically select the appropriate power supply circuit for the current operating conditions, maintaining simplicity while achieving wide voltage range coverage
Solution Approach 2:
The control device includes self-service features through automatic voltage detection and selection mechanisms. The system automatically determines which power supply circuit is appropriate based on the input voltage and configures itself accordingly, reducing the need for complex external control systems and manual intervention
3Adaptability or versatility
If the input voltage range is extended from 12V to 300V, then versatility improves, but conventional switching controllers cannot provide required high output powers across this entire range
Solution Approach 1:
The wide input voltage range from 12V to 300V is segmented into multiple narrower ranges, with each power supply circuit optimized for a specific segment. This segmentation allows each circuit to be designed for high output power delivery within its operating range, while the collection of segmented circuits provides coverage across the entire extended voltage range
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
Enables the operation of electromagnetic switchgear drives over a wide input voltage range from 24 volts to 240 volts AC/DC, reducing the need for multiple switchgear units, simplifying the control device circuit, and enhancing robustness and compactness, while minimizing the number of components and installation space required.
Implementation Method 1
electromagnetic drive of a switchgear
Data Source
AI summary
A control device for an electromagnetic drive of a switchgear includes a plurality of power supply units, each of which is configured to provide, in a specified input voltage range in each case, electrical power that is sufficient for operating the electromagnetic drive: The control device is configured to automatically control the use of the power supply units for operating the electromagnetic drive on the basis of an input voltage of the control device.