Mixer Drum Drive Train With HV DC Grid Energy Control
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Solution Overview
Problem
Existing drive train systems for mixer drums lack flexibility in electrical energy supply, relying on conventional configurations that do not efficiently manage energy flow and component interactions.
Innovation Solution
A drive train system featuring a high-voltage DC grid connected to power converters and a battery, with a control device managing energy flow across the grid, allowing for flexible energy distribution and efficient component operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional drive train configuration is used, then the system structure is simple, but the flexibility in electrical energy supply is limited
Solution Approach 1:
The high-voltage DC grid serves as a universal energy distribution platform that can accommodate multiple energy sources (generator, battery, external grid) and multiple consumers (motor, heating elements, auxiliary devices). This multi-functional architecture enables flexible energy supply configurations without requiring separate dedicated circuits for each component, thus improving adaptability while managing complexity through standardization.
Solution Approach 2:
The control device dynamically manages energy flow distribution across the high-voltage DC grid, allowing the system to adapt to changing operational requirements. The controller can reallocate power sources and consumers in real-time based on demand, enabling flexible configurations such as using the battery to supplement generator output during peak demand or powering auxiliary devices independently when energy is abundant.
2Adaptability or versatility
If multiple power sources and consumers are connected, then the energy supply flexibility increases, but the control complexity increases
Solution Approach 1:
The control device continuously monitors the operational status of all connected components (generator output, battery charge state, motor power consumption, heating element status) and uses this feedback to dynamically adjust energy flow distribution. This closed-loop control enables the system to maintain optimal performance and balance across multiple power sources and consumers, managing control complexity through real-time adaptive decision-making.
Solution Approach 2:
The high-voltage DC grid acts as an intermediary platform that standardizes the interface between diverse power sources (AC generator, DC battery, external grid) and various consumers (three-phase motor, single-phase heating elements, auxiliary devices). By converting all inputs to a common DC voltage level and providing standardized control interfaces, the system manages the complexity of coordinating multiple components through a unified control architecture.
3Ease of manufacture
If conventional components are used, then the ease of manufacture increases, but the efficiency in energy management decreases
Solution Approach 1:
The system maintains compatibility with conventional components (standard AC generator, common battery types, typical three-phase motors) while achieving improved energy management efficiency through the high-voltage DC grid architecture and intelligent control. The controller optimizes operational parameters such as generator output voltage, battery charge/discharge rates, and motor power delivery to maximize overall system efficiency, proving that conventional components can be made more efficient through advanced control strategies rather than requiring specialized custom components.
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
The system achieves a high degree of flexibility and efficiency in energy supply, enabling favorable and flexible configuration of the drive train while using conventional components.
Implementation Method 1
a generator, which outputs an AC voltage to a first power converter
Implementation Method 2
a first power converter, which is connected to a high-voltage DC grid... a second power converter, which is likewise connected to the high-voltage DC grid
Implementation Method 3
a high-voltage battery is provided which is connected to the high-voltage DC grid
Data Source
AI summary
A drive train for a mixer drum comprises a generator which outputs a first alternating voltage to a first converter. The first converter is connected to a high-voltage direct voltage network. A second converter is also provided which is connected to the high-voltage direct voltage network and which supplies an electric motor with a second alternating voltage in order to drive the mixer drum. The drive train also comprises a high-voltage battery which is connected to the high-voltage direct voltage network. Finally, a control unit is also provided which is connected to the first and second power converters or the battery and thus controls a flow of energy via the high-voltage direct voltage network.