Dual Actuated Power Pack for Mining Load Peaks
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Solution Overview
Problem
Existing power pack systems for environments like mining and tunnelling sites face challenges with high load peaks during starting, requiring oversized grid power feedings and interference filters, which are costly and vulnerable to interference and safety hazards.
Innovation Solution
A dual actuated power pack system with mechanically coupled electric motors, where one motor is battery-powered and the other is grid or combustion engine-powered, achieving galvanic isolation and eliminating the need for massive interference filters by allowing the first motor to recharge the battery and actuate the power generator, while the second motor provides primary power with soft-starting and power peaking capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grid powered electric motor is used to power the generator, then the system can operate with external power supply, but it induces high load peaks during starting requiring massive interference filters and oversized power feedings
Solution Approach 1:
The system divides the power supply function into two separate motors: a first electric motor for normal operation and a second electric motor for starting and peak load conditions. This segmentation allows each motor to be optimized for its specific function, eliminating the need for massive interference filters while maintaining reliable power supply.
Solution Approach 2:
The control system dynamically switches between the first and second electric motors based on operational conditions. During starting and peak loads, the second motor is activated to share the load, dynamically adjusting the power distribution to prevent high load peaks on the grid connection.
2Adaptability or versatility
If a battery powered electric motor is used, then the system operates without external grid dependency, but it may induce interference and sparks in closed environments
Solution Approach 1:
The first electric motor acts as an intermediary between the battery and the generator, providing a controlled interface that prevents direct battery connections which could cause sparks. The motor converts electrical energy to mechanical energy and back, eliminating harmful sparks while maintaining grid independence.
3Reliability
If massive interference filters are used to protect against grid interference, then system safety is improved, but the system becomes more vulnerable and expensive
Solution Approach 1:
The invention extracts and eliminates the need for massive interference filters by using the second electric motor to handle starting and peak loads. This removes the harmful high load peaks that would otherwise require complex filtering, making the system both safer and less vulnerable.
4Power
If oversized grid power feedings are used to handle load peaks, then power supply capacity is sufficient, but the system becomes more expensive and requires massive components
Solution Approach 1:
The power supply capacity is segmented between two motors: the first motor handles normal operation while the second motor provides additional capacity during peak loads. This segmentation allows the use of smaller, more compact components instead of one large oversized motor and power feeding system.
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 solution reduces the need for oversized grid power feedings, minimizes interference, and allows for cost-effective, compact, and safe operation by maintaining constant grid load and eliminating the need for expensive filters, while enabling efficient power management and peak moderation.
Implementation Method 1
a first electric motor which is configured to be powered by the battery energy and which is configured to actuate the power generator
Implementation Method 2
a second electric motor which is configured to be powered by an external energy source and which is configured to actuate the power generator
Implementation Method 3
a power generator which is configured to be actuated by the first and second electric motors
Data Source
AI summary
A dual actuated power pack (300) comprises a battery (104) and first (101) and second (102) electric motors, as well as a power generator (103). The first electric motor (101) is powered by the battery (104) and the second electric motor (102) by a grid (106). The first and second electric motors (101, 102) are mechanically coupled (108) with each other so that when said second electric motor (102) is powered, said second electric motor (102) actuates (109) said power generator (103) and said first electric motor (101) at the same time, whereupon the first electric motor (101) functions as a hi-power battery charger and recharge the battery (104) when said second electric motor (102) actuates (109) the power generator (103). When the second electric motor is not used, the first electric motor (101) is powered (104, 105), and the power generator (103) is actuated (108) by said first electric motor (101).