All-Electric Mobile Power Unit With Variable Voltage Outputs
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Solution Overview
Problem
Traditional temporary electrical power systems rely on noisy, expensive, and polluting diesel and gas generators, which have limitations in emissions, maintenance, and flexibility, particularly failing to meet high demand applications and indoor operation requirements.
Innovation Solution
An all-electric, battery-powered industrial mobile power unit with a DC energy source, high voltage DC/DC converter, and inverter stages controlled by an electronic controller to produce user-selected voltage outputs from 100 VAC to 500 VAC and phase configurations, including 480 VAC 3-phase, 208 VAC 3-phase, and 240 VAC single-phase, without the need for transformers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If diesel or gas generators are used to provide temporary electrical power, then sufficient power output can be achieved, but emissions and noise levels increase significantly
Solution Approach 1:
The patent replaces the mechanical combustion engine system with an all-electric battery-powered system. The combustion engine that drives the alternator is substituted with electric motors driven by battery packs, eliminating exhaust emissions and significantly reducing noise levels while maintaining the required power output for temporary electrical power needs
Solution Approach 2:
The patent changes the energy source parameter from chemical energy (diesel/gas) to electrical energy (battery). This fundamental parameter change transforms the system from a combustion-based generator to an electric power unit, resolving the contradiction between power output and harmful emissions/noise
2Power
If large industrial generators are used to meet high demand applications, then sufficient power is provided, but the system becomes less flexible and more expensive to operate
Solution Approach 1:
The patent divides the power generation system into multiple independent battery packs and modular power conversion units. This segmentation allows the system to be configured in different combinations to meet varying power demands, providing load flexibility while maintaining sufficient power for high demand applications. Individual modules can be activated or deactivated based on actual load requirements
Solution Approach 2:
The patent implements dynamic power output control through electronic load management and variable speed electric motors. The system can adjust power output in real-time to match actual demand, transitioning from static fixed-output generators to dynamic adaptive power delivery, thereby improving load flexibility while meeting high demand requirements
3Adaptability or versatility
If multiple voltage outputs are provided with physical reconfiguration, then user needs are satisfied, but device complexity increases
Solution Approach 1:
The patent replaces the mechanical voltage selector switch and physical pole reconfiguration system with an electronic control system. Solid-state power conversion circuits with electronic switching devices (such as IGBTs or MOSFETs) dynamically reconfigure the electrical connections to provide different voltage outputs (480VAC, 208VAC, 240VAC, 120VAC) without any mechanical movement, thereby reducing device complexity while maintaining voltage output versatility
Solution Approach 2:
The patent implements a universal power conversion system that can provide multiple voltage outputs through a single integrated electronic controller and power conversion circuitry. Instead of requiring separate physical configurations for each voltage level, the universal electronic system can dynamically adapt to provide any required voltage output, simplifying the overall device structure while maintaining adaptability
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 solution provides lower emissions, near-silent operation, increased load flexibility, reduced maintenance, and lower fuel costs, while achieving efficient power conversion and adaptable output configurations.
Implementation Method 1
a high voltage DC/DC converter electrically coupled to the electrical energy source
Implementation Method 2
a plurality of inverter stages electrically coupled to the high voltage DC/DC converter
Data Source
AI summary
An all-electric, battery powered industrial or commercial mobile power unit is provided that can include a number of features. The mobile power unit can include a DC electrical energy source configured to produce a voltage of approximately 300-450 VDC. The mobile power unit can be configured so as to produce a user programmable voltage output and/or a user selected voltage output of either 480 VAC 3-phase, 208 VAC 3-phase, or 240 VAC single-phase. The various output configurations are controlled by software with a system controller of the mobile power unit. Methods of use are also provided.