IEEE 2847-2021

New IEEE Standard - Active.

Physical layer and data link layer specifications for power supply and communication over power lines from a dc power source to multiple dc loads are specified.

Each receiver has its own physical address and is connected to the transmitter through a pair of power lines in a multidrop bus or tree topology.

The dc power is sent by the transmitter. This dc power, by electrically changing the voltage of the wires, corresponds to the communication packets, including the control command/data for controlling the dc loads and the target address.

Power to the dc loads with the transmitted and voltage-flattened dc power is supplied by each receiver.

The control command/data and addresses from electric signals on the power line is decoded by each receiver, to be used for the connected dc loads control if the addresses match.

The standard is in compliance with known electromagnetic compatibility (EMC) regulations.

This standard defines physical layer and data link layer specifications of a new power supply and communication technology over a power line from a dc power source to multiple dc loads with the following conditions:

• Communication speed is 9600 bps or less.
• DC power source is 50 V or less.
• DC load consumes more than 10 W and less than 2 kW.
• The capacity of one power supply is more than 100 W.
• Each receiver has its own physical address (4 b or more).
• Each receiver is connected to the transmitter through a pair of power line wires of 1 km or less.
• Each receiver is connected to the power line in a multi-drop bus or tree topology.
• The transmitter transmits the dc power and the electric signals in the form of electrically changing voltage of the wires through the power line to the receivers and the signals are corresponding to the communication packets that include the control command/data for controlling the dc loads and the target address.
• Each receiver supplies the transmitted and voltage-flattened dc power to the dc loads.
• Each receiver decodes the control command/data and the address from electric signals on the power line and uses them for the connected dc loads if the address matches.

This standard is for dc power line communication technology given the name high power differential signal power line communication (HPDS-PLC).

The relationship between this standard and known electromagnetic compatibility (EMC) regulations is also addressed.

The purpose of this standard is to define how to supply power and transmit a control command or data through a power line to the dc loads in an economical and reliable way, such as:

• Light-emitting diode (LED) lighting
• DC motor
• DC actuator
• Battery control device
• DC home electronic appliances from dc power source, such as alternating current (ac) to dc power conversion device
• Battery
• Uninterruptible power supply (UPS)
• Energy storage system (ESS)
• Renewable dc power generation device, such as a solar panel

This standard provides the following advantages:

• It enables high noise margin and signal-to-noise (S/N) ratio as well as common mode noise rejection (to use the line dc voltage totally as signal range).
• Costs of communication solutions may be reduced or eliminated by adopting simple circuits.
• Cost of controlling LED lighting or dc loads may be reduced by eliminating electrolytic capacitors for ac to dc conversion that frequently cause failures and shorten the life span of the loads.
• It makes it possible to avoid efficiency problems due to the double conversions of dc→ac→dc in the power supply process from renewable energy generation.