Common Frequency Converter for Mobile Crushing Drive Control
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Solution Overview
Problem
Existing mobile crushing systems face challenges with complex and costly switch cabinet setups due to multiple frequency converters required for diverse drives with varying power demands and operating characteristics, leading to increased space and wiring needs.
Innovation Solution
A common frequency converter is used to actuate both travel and unit drives, with adjustable parameter sets to accommodate different power levels and operating characteristics, reducing the need for multiple converters and simplifying wiring, and allowing for dual or multi-control functions across drives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple frequency converters are provided for different travel and unit drives, then each drive can be controlled with appropriate power and speed characteristics, but the switch cabinet requires larger space and complex wiring
Solution Approach 1:
A single frequency converter is designed to perform multiple functions by controlling different travel drives and unit drives through parameter set switching. The frequency converter can operate with first parameter sets for travel drives and second parameter sets for unit drives, eliminating the need for separate frequency converters for each drive type and reducing switch cabinet complexity
Solution Approach 2:
The frequency converter adapts to different drive requirements by switching between different parameter sets stored in the control device. Parameter sets include different frequency, voltage, and power characteristics optimized for either travel drives or unit drives, allowing one frequency converter to handle multiple drive types with varying power demands
2Reliability
If multiple frequency converters are provided for different drives, then each drive receives dedicated power control, but wiring requirements and costs increase
Solution Approach 1:
The frequency converter is designed as a universal device that can control multiple different drives through a single unit. By switching between parameter sets, it provides dedicated power control for both travel drives and unit drives without requiring separate frequency converters, thereby reducing wiring complexity while maintaining reliable drive actuation
3Ease of operation
If separate frequency converters are used for travel and unit drives, then each drive operates independently, but space in the switch cabinet increases
Solution Approach 1:
The frequency converter is designed to perform multiple functions by controlling different travel and unit drives. Through parameter set switching, it maintains independent operation of each drive while consolidating multiple converters into a single unit, thereby reducing switch cabinet space requirements
Data Source
AI summary
The present invention relates to a self-propelled material processing and/or handling system for processing and/or handling construction and/or raw materials, in particular in the form of a mobile crushing system, with at least one working unit, which is drivable, by an electric unit drive, with an electric motor, at least one electric travel drive with an electric motor, as well as a control device to control the electric motors of the unit and travel drives. According to the invention, the control device comprises a common frequency converter for the at least one travel drive and the at least one unit drive and provides various parameter sets for the common frequency converter so that the travel drive is actuatable by the frequency converter on the basis of a first parameter set and the unit drive is actuatable by the common frequency converter on the basis of a second parameter set.