Page 157 - The ROV Manual - A User Guide for Remotely Operated Vehicles 2nd edition

7.1 Electrical considerations 145
Power supply
J-Box
Controller
General power arrangement for an OCROV.
Thrusters
Lights
Tools
Generator
Cameras
FIGURE 7.4
Figure 7.4 depicts a general arrangement for a DC-powered OCROV. Figures 7.5 and 7.6 depict MSROVs running on both AC, as well as DC (respectively), for powering their high-power con- sumption components. The OCROV unit is straightforward as is the shallow-water MSROV (it is typically very similar to the OCROV in arrangement). On the deepwater MSROV diagrams, the power is generated at the source and then routes through a power distribution unit (PDU). The PDU then splits the various power feeds into their components for conditioning and transfer. For the WCROV (Figure 7.7), the assembly is quite similar to the MSROV but the HV circuit immedi- ately drives a hydraulic pump for powering movable parts (e.g., thrusters, P&T, manipulators, or tooling).
7.1.4 Rotary joints (a/k/a “slip rings”)
7.1.4.1 Electrical slip ring
The rotary joint (commonly referred to as a “slip ring”) is an electrical (but can also contain fiber-optic junctions in the same unit) junction for converting electrical signal/power from a static
Sensors
Electronics
Grabber
Tether
Low voltage
High voltage