Boat Electric Drive Overload Switching Mechanism
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Solution Overview
Problem
Existing electric drive systems for boats are limited by their rated power, restricting maximum acceleration and thrust, which cannot be optimally utilized in all situations, leading to suboptimal performance and safety concerns, especially in emergency maneuvers or challenging conditions.
Innovation Solution
A device with a manually operable overload switching mechanism that allows the electric drive to operate beyond its maximum speed, torque, and power levels, providing increased thrust and acceleration by switching into an overload mode, while ensuring safety through limitations and sensors to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric drive is limited to operate at rated power, then the service life and safety of the electric drive and power electronics are ensured, but the maximum acceleration values and maximum short-term thrust are limited
Solution Approach 1:
The patent implements dynamic power management by introducing an overload switching device that allows the electric drive to switch between normal operating mode (at rated power) and overload mode (above rated power). This dynamic adjustment enables the system to adapt to different operational requirements, providing maximum thrust when needed while maintaining reliability during continuous operation.
Solution Approach 2:
The patent changes the operating parameters of the electric drive by allowing temporary operation above the rated power through the overload switching device. This parameter change enables the system to achieve higher acceleration and thrust values when required, while the control system monitors and manages the operational parameters to ensure safe operation.
2Speed
If the throttle lever position specifies maximum speed, then the electric drive operates at maximum speed corresponding to rated power, but additional thrust for emergency maneuvers cannot be provided
Solution Approach 1:
The patent introduces dynamic control capability through the overload switching device, which allows the system to transition from a fixed maximum speed operation to a dynamic mode where both speed and thrust can be optimized independently. This enables the electric drive to provide additional thrust for emergency maneuvers while maintaining the ability to operate at maximum speed during normal conditions.
Solution Approach 2:
The patent makes the electric drive system multi-functional by enabling it to perform both normal maximum speed operation and emergency overload operation. The overload switching device allows the same electric drive to serve multiple purposes: efficient cruising at rated power and high-performance emergency maneuvers above rated power, increasing the overall versatility of the propulsion system.
Data Source
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AI summary
The present invention relates to a device for specifying the power of an electric drive of a boat, comprising a manually operable drive lever which can be positioned between a zero position in which the electric drive is stationary and a maximum position in which the electric drive is operated at its rated power, wherein a manually operable overload switching device is provided, upon actuation of which the electric drive is operated in an overload mode.