WHAT IS A FREQUENCY CONVERTER
A frequency converter is an electronic controlled power conversion device which can convert power from one distribution standard to another.
They convert an alternating current of a basic fixed-frequency to alternating current of another frequency. They are also used to control the speed and the torque of AC motors.
The AC motors are usually same standard motors that can be connected across AC power line. By incorporating bypass starters, operation can be maintained even if inverter should fail.Significant energy savings are achieved in many applications with frequency converters controlling the speed of pumps and fans.
TYPES OF FREQUENCY CONVERTERS
• Shore Power Converters
• Aviation Power Converters
• Industrial Power Converters
SHORE POWER CONVERTERS
The environmental footprint of port areas is under close observation. Governments, port authorities and ship owners are seeking different solutions to reduce emissions from ships while they are engaged in port operations.
One solution to this problem has been identified as connecting ships in port to an onshore power supply, where electricity from the shore-based grid is used to power ships’ infrastructure used for hosting crew and passengers while docked, and for cargo-handling activities.
Shore Power Converter for Dockside Applications (Shore to Ship)
Many of the port and marina operators are now offering vessels the opportunity to “plug into” the local city power supply grid on the dockside so the vessel can turn off its engines while at port. However many countries have their own local power distribution grid voltages.
Also when a ship is at berth , the engines are turned off but would normally continue to run its diesel engine generators to power all of the on board auxiliaries such as air conditioning, heating, lighting, battery charging, communications , water pump and other utility services.
These power diesel generators produce noise; vibrations; exhaust smoke; air pollution; gases; and CO2 emissions, as well as consume vast amounts of unpleasant smelling diesel fuel.
Connection to any worldwide shore supply
Eliminating all ship engine emissions in the ports
Full galvanic isolation from shore
Plug and play easy connectivity
Eliminating ship noise and vibrations
Ensuring compliance with Marine Class requirements.
Extra power availability on low voltage shore supplies
Protecting all on board sensitive equipments against shore supply faults
Facilitating maintenance or repair on auxiliary engines while not in operation
Generating savings, as ships at port can shut down their engines, when electricity is less costly than fuel.
Lower operating cost with better efficiency
Highest availabilty for the operations in ports.