Relocating Power Electronics to Axle Region in Diesel-Electric Dump Trucks
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Solution Overview
Problem
The existing diesel electric drive systems in large dump trucks face challenges with long cable lengths leading to increased cabling effort and electromagnetic interference, as well as safety risks due to the placement of power electronics on the upper deck.
Innovation Solution
The power electronics are rearranged to be located near the driven driving axle or between the vehicle frame beams, reducing cable lengths and minimizing electromagnetic interference, while also providing easier access and protection from external influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power electronics are installed on the upper deck next to the operator's cabin, then accessibility for operation and monitoring is improved, but the cable length between power electronics and electric motors increases significantly
Solution Approach 1:
The patent relocates the power electronics from the upper deck (vertical dimension) to the lower region near the driven axle, fundamentally changing the spatial arrangement. This dimensional shift reduces cable length while maintaining serviceability through the service access point at the lower rear of the vehicle body.
2Ease of operation
If power electronics are installed on the upper deck, then ease of access for operation is improved, but the likelihood of electromagnetic interference increases due to long line paths
Solution Approach 1:
The patent extracts the power electronics from the upper deck location and relocates them to the lower region near the driven axle. This separation removes the source of electromagnetic interference from the operator's environment while the service access point enables continued operational access.
Solution Approach 2:
The service access point at the lower rear of the vehicle body acts as an intermediary, enabling operators to access and service the power electronics without being in close proximity to the electromagnetic interference sources during normal operation.
3Ease of operation
If power electronics are installed on the upper deck, then accessibility is improved, but safety risk to personnel increases due to proximity to operator's cabin
Solution Approach 1:
The patent extracts the power electronics from the upper deck location near the operator's cabin and relocates them to the lower region near the driven axle. This physical separation eliminates the safety hazard to personnel while the service access point maintains operational accessibility.
4Length of stationary object
If power electronics are relocated to the region of the driven axle, then cable length is reduced and electromagnetic interference is minimized, but accessibility for service may be reduced
Solution Approach 1:
The service access point at the lower rear of the vehicle body serves as an intermediary access point, enabling service personnel to reach the power electronics in the lower region without requiring disassembly of the vehicle structure, thus maintaining ease of repair.
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 configuration simplifies service and installation, reduces electromagnetic interference, and enhances safety by shortening cable paths and relocating power electronics away from the operator's cabin, thereby reducing the risk to personnel.
Implementation Method 1
the mechanical energy generated by a diesel engine is converted with the aid of an alternator into electrical energy for the supply of the electric traction drives
Data Source
AI summary
The present disclosure relates to a work machine, in particular in the form of a dump truck or of a truck, having a diesel electric traction drive, comprising at least one internal combustion engine, at least one alternator, at least one set of power electronics as well as at least one electric motor, wherein the power electronics are arranged at least partially in the region of a driven driving axle of the work machine.