PTO-Driven Generator Control for Electric Sprayer Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing sprayer devices face challenges in operating efficiently with electric power, as they consume battery power from traveling vehicles, leading to a high load on the vehicle's electric power supply.
Innovation Solution
A working machine equipped with a generator system that includes a first switch to manage electricity generation and storage, using a DC/DC converter to convert surplus electricity into magnetizing current, and a second switch to switch between battery power and generator power, reducing the load on the traveling vehicle's electric supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the motor is driven by using electric power from the traveling vehicle side, then the working device can be operated, but the battery on the traveling vehicle side is consumed and it is difficult to operate the sprayer device with electric power supplied from only the battery
Solution Approach 1:
The working device includes its own generator (15) that generates electricity during operation, allowing it to be self-sufficient for power needs. The generator converts mechanical energy from the PTO shaft into electrical energy, enabling the working device to power its own motor (23) without continuously drawing power from the traveling vehicle's battery.
Solution Approach 2:
The system merges the power generation function into the working device by integrating a generator (15) that is driven by the PTO shaft of the traveling vehicle. This combination allows the working device to simultaneously utilize mechanical power transmission and generate its own electrical power, reducing the burden on the vehicle's electrical system.
2Use of energy by moving object
If a generator is added to generate electricity for the working device, then the load on the traveling vehicle's electric power supply is reduced, but the device complexity increases
Solution Approach 1:
The PTO shaft serves multiple functions: it transmits mechanical power to the working device and simultaneously drives the generator to produce electrical energy. This multi-functionality reduces the need for separate power transmission components and simplifies the overall system architecture despite adding power generation capability.
Solution Approach 2:
The converter device (720) acts as an intermediary between the generator's output and the working device's motor. It includes a DC/DC converter to convert surplus electricity into magnetizing current, and switching mechanisms to manage power flow between the generator, battery, and motor, thereby simplifying the integration of the generator into the existing 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 configuration allows for easy operation of working devices like sprayers using electric power while minimizing the electric power load on the traveling vehicle, enhancing operational efficiency.
Implementation Method 1
a converter device (720) to convert surplus electricity not consumed by the working device (3) into a magnetizing current to be applied to the rotor coil (701)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
To easily operate a working device by electric power while reducing a load of electric power supply on the traveling vehicle side. A working machine (1) includes: a first generator (15) having: a rotor (700) to be rotated by power from a PTO shaft (19); a rotor coil (701) provided to the rotor (700); and a stator coil (703) to generate electricity when magnetizing current is applied to the rotor coil (701); a working device (3) to be operated by the electricity generated by the first generator (15); and a converter device (720, 850) to convert surplus electricity not consumed by the working device (3) into the magnetizing current to be applied to the rotor coil (701).