IEC 62827-1:2016

IEC 62827-1 ®
Edition 1.0 2016-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Wireless power transfer – Management –
Part 1: Common components
Transfert de puissance sans fil – Gestion –
Partie 1: Composants communs
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IEC 62827-1 ®
Edition 1.0 2016-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Wireless power transfer – Management –

Part 1: Common components
Transfert de puissance sans fil – Gestion –

Partie 1: Composants communs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.240.99; 35.240.99 ISBN 978-2-8322-3248-4

– 2 – IEC 62827-1:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Terms, definitions and abbreviations . 6
2.1 Terms and definitions . 6
2.2 Abbreviations . 7
3 Overview . 7
4 Reference models . 8
4.1 General . 8
4.2 WPT of one source to one device (1:1) . 8
4.3 WPT of one source to many devices (1:N) . 9
4.4 A WPT of many sources to many devices (M:N) . 10
4.5 WPMS with WPMS-Rs . 10
5 Components in WPMS-S and WPMS-D . 12
6 Functionalities . 13

Figure 1 – Concept of a wireless power management system . 8
Figure 2 – Structure of 1:1 wireless power transfer network . 9
Figure 3 – Structure of a 1:N wireless power transfer network . 9
Figure 4 – Structure of a M:N wireless power transfer network . 10
Figure 5 – WPMS-R as power receiver . 11
Figure 6 – WPMS-R as power transmitter . 12
Figure 7 – Components of WPMS-S and WPMS-D in WPMS . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WIRELESS POWER TRANSFER –
MANAGEMENT –
Part 1: Common components
FOREWORD
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International Standard IEC 62827-1 has been prepared by technical area 15: Wireless power
transfer, of IEC technical committee 100: Audio, video and multimedia systems and
equipment.
The text of this standard is based on the following documents:
CDV Report on voting
100/2451/CDV 100/2538/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 62827-1:2016 © IEC 2016
A list of all parts in the IEC 62827 series, published under the general title Wireless power
transfer – Management, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTRODUCTION
The IEC 62827 (Wireless power transfer – Management) series provides the management
protocol for a wireless power transfer system in which power sources can deliver power to
receivers at a distance. IEC 62827 consists of the following parts:
– Part 1: Common components
– Part 2: Multiple devices control management
– Part 3: Multiple sources control management
Part 1 of IEC 62827 defines the definition and functionality for a wireless power transfer
system.
Part 2 of IEC 62827 specifies the management protocol of wireless power transfer for multiple
devices.
Part 3 of IEC 62827 specifies the management protocol of wireless power transfer for multiple
sources.
– 6 – IEC 62827-1:2016 © IEC 2016
WIRELESS POWER TRANSFER –
MANAGEMENT –
Part 1: Common components
1 Scope
This part of IEC 62827 specifies common components of management for multiple sources
and devices in a wireless power transfer system, and justifies various functions for wireless
power transfer.
This part of IEC 62827 defines the reference models for possible configurations of a wireless
power transfer system. The models are specified in additional parts in more detail.
NOTE This standard is applied to a wireless power transfer system for audio, video and multimedia equipment.
2 Terms, definitions and abbreviations
2.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1.1
wireless power receiver
device which receives electric power wirelessly
Note 1 to entry: There are two types of wireless power receivers. One is a wireless power receiver with battery.
The other is a wireless power receiver without battery, such as speakers and displays.
2.1.2
wireless power source
transmitter which delivers electric power to power receiver wirelessly
2.1.3
wireless power transfer
transfer of electric power without the physical contact of electrodes
2.1.4
wireless data communication zone
area that includes wireless power sources or wireless power receivers, and enables data
communication without physical contact
Note 1 to entry: A wireless data communication zone includes a wireless power transfer zone.
Note 2 to entry: A wireless data communication zone can be a union of multiple wireless data communication
zones managed by multiple wireless power sources.
2.1.5
wireless power transfer zone
area that includes wireless power sources or wireless power receivers, and enables power
transfer without physical contact
Note 1 to entry: A wireless power transfer zone can be a union of multiple wireless power transfer zones
managed by multiple wireless power sources.

2.1.6
wireless power management system
management system that is capable of transferring wireless power from either one or multiple
power sources to either one or multiple power devices with wireless communication
Note 1 to entry: In case that areas or regions, where both data and power can be transferred, are emphasized,
the term “wireless power transfer network” may be used.
2.1.7
wireless power management system
wireless power source which can transfer power to a number of WPMS devices
(WPMS-Ds) or relay transmitters (WPMS-Rs)
2.1.8
wireless power management system
wireless power receiver which can receive power from the WPMS sources
(WPMS-Ss) or relay transmitters (WPMS-Rs)
2.1.9
wireless power management system
wireless power relay transmitter which can transfer electric power from one or
multiple source(s) to one or multiple device(s)
Note 1 to entry: To relay electric power wirelessly, it performs a source (WPMS-S) and a device (WPMS-D) at a
time.
2.2 Abbreviations
WPT Wireless Power Transfer
WDCZ Wireless Data Communication Zone
WPTZ Wireless Power Transfer Zone
WPTN Wireless Power Transfer Network
WPMS Wireless Power Management System
WPMS-S Wireless Power Management System – Source
WPMS-R Wireless Power Management System – Repeater
WPMS-D Wireless Power Management System – Device

3 Overview
WPMS is the management system of WPT for multiple WPMS-Ss and WPMS-Ds.
Conventional charging via a cable is inconvenient to users. WPT is a technology that
eliminates a conventional charging method via a wired cable. It utilizes the characteristics of
electromagnetic coupling to deliver power at a distance. WPMS aims to provide consumers of
various mobile devices an option to be able to fully utilize WPT that delivers power wirelessly.
To break away from conventional 1:1 wireless charging (1:1 WPT), WPMS will be managing
power transfer for multiple WPMS-Ss and WPMS-Ds (M:N WPT) simultaneously.

– 8 – IEC 62827-1:2016 © IEC 2016
WPMS-S
WPMS-D
WPMS-D
WPMS-D
WPMS-S
WPMS-D
WPMS-S WPMS-D
WPMS-D
WPMS-D
WPMS-R
IEC
Figure 1 – Concept of a wireless power management system
In Figure 1, there are three sources which have repeaters or several devices such as a TV, a
remote control, a tablet PC, a smartphone, a notebook computer and wireless speakers in
their own WPTZ.
The WPMS technology can be applied to the various fields, including the following.
• Mobile terminals: Charging services can be provided to mobile terminals any time and
anywhere.
• Home appliances: The use of WPMS technology can offer the benefits of minimal wiring
and choice of furniture arrangements, while eliminating the disorder and inconvenience of
conventional cable charging.
4 Reference models
4.1 General
This clause describes the reference models offering possible configurations of WPMS-S(s),
WPMS-R(s) and WPMS-D(s).
4.2 WPT of one source to one device (1:1)
In a 1:1 WPT model, a WPTN consists of a single WPMS-S and a single WPMS-D, as shown
in Figure 2.
WDCZ
WPMS-D WPMS-S
WPTZ
Power transfer
Data communication
IEC
Figure 2 – Structure of 1:1 wireless power transfer network
The WPMS-S receives the charging status data of the WPMS-D in the WDCZ, and forms the
WPTN based on that information. Then, the WPMS-S wirelessly transfers power to the
WPMS-D in the WPTN.
A WPMS-S can manage only a WPMS-D in the WPTZ and transfer electric power to the
WPMS-D at a distance. This signifies that one WPMS-D belongs to only one WPTZ.
4.3 WPT of one source to many devices (1:N)
In a 1:N WPT model, a WPTN consists of single WPMS-S and multiple WPMS-Ds, as shown
in Figure 3.
WPMS-D
WDCZ
WPMS-S
WPMS-D
WPTZ
WPMS-D
Power transfer
Data communication
IEC
Figure 3 – Structure of a 1:N wireless power transfer network
The WPMS-S collects the charging status data of multiple WPMS-Ds in the WDCZ, and forms
the WPTN based on this information. Then, the WPMS-S wirelessly transfers power to
WPMS-Ds in the WPTN. A WPMS-D located outside a WPTZ is not included in the WPTN.

– 10 – IEC 62827-1:2016 © IEC 2016
A WPMS-S manages multiple WPMS-Ds in the WDCZ and transfers electric power to the
WPMS-Ds in the WPTZ remotely. WPMS-Ds can belong to only one WPTZ at the same time.
4.4 A WPT of many sources to many devices (M:N)
In a M:N WPT model, a WPTN consists of multiple WPMS-Ss and multiple WPMS-Ds, as
shown in Figure 4.
WDCZ
WPMS-D
WPMS-D
WDCZ
WPTZ
WPMS-D
WPMS-S
WPMS-S
WPMS-D
WPTZ
WPMS-D
WPMS-D
Power transfer
Data communication
IEC
Figure 4 – Structure of a M:N wireless power transfer network
Figure 4 shows that a WPMS-D can belong to multiple WPTZs which are managed by multiple
WPMS-Ss simultaneously. In this scenario one WPTZ can be a union of multiple WPTZs.
WPMS-Ss collect the charging status data and location of WPMS-Ds in their WDCZs. Based
on this information, each WPMS-S forms a WPTN which includes the WPMS-S, and finally
sets up a WPTN which is a union of the individual WPTNs. Then, the WPMS-Ss communicate
with each other to transfer electric power to WPMS-Ds in their WPTZs, including the
intersection of the WPTZs. Each WPMS-D can receive wireless power from the WPMS-Ss in
the WPTN.
This M:N WPT reference model covers M:1 wireless power transfer which consists of multiple
WMPS-Ss and one WPMS-D. The WPMS-D is located in the WPTN managed by only one
WPMS-S or in the intersection of the WPTNs managed by multiple WPMS-Ss. When the
WPMS-D moves to other WPTNs, the power management is updated accordingly.
4.5 WPMS with WPMS-Rs
A WPMS can include WPMS-Rs. If a WPMS-R has both WPMS-S and WPMS-D functions, the
WPMS-R is subject to time division processing and the reference model is a combination of
4.3 and 4.4. As shown in Figure 5 and Figure 6, WPMS-S and WPMS-D functions within the
WPMS-R are periodically exchanged or replaced. Figure 5 shows that the WPMS-R operates
as a power receiver like the WMPS-D. Each WPMS-D can receive wireless power from
WPMS-Ss or WPMS-Rs in the WPTN. Figure 5 is based on the same model as Figure 3.

Figure 6 shows that the WPMS-R operates as a power transmitter like a WMPS-S. Figure 6 is
based on the same model as Figure 4. WPMS-Rs which are managed by WPMS-Ss can
extend the WPTN.
Therefore, the reference model of WPT with repeaters is a special case and a combination of
other models, namely Figure 3 and Figure 4.
WDCZ
WPMS-D
WDCZ
WPTZ
WPMS-D
WPMS-S
WPMS-R
WPMS-D
WPTZ
WPMS-D
WPMS-D
Power transfer
Data communication
IEC
Figure 5 – WPMS-R as power receiver

– 12 – IEC 62827-1:2016 © IEC 2016
WDCZ
WPMS-D
WPTZ
WDCZ
WPMS-D
WPMS-R
WPMS-D WPMS-S
WPTZ
WPMS-D
WPMS-D
Power transfer
Data communication
IEC
Figure 6 – WPMS-R as power transmitter
5 Components in WPMS-S and WPMS-D
Transmitting Data
power control communication
DC-AC Power
Matching
converter amplifier
WPMS-S
Data Receiving power
communication sensing/control
Charging/
DC-DC
Matching Rectifier Load
power
converter
manager
WPMS-D
IEC
Figure 7 – Components of WPMS-S and WPMS-D in WPMS

Figure 7 shows an example of the WPMS consisting of WPMS-S and WPMS-D. The WPMS-S
includes a DC-AC converter, a power amplifier, a transmitting power control block, a data
communication block, and a wireless power transmitting resonant antenna. The DC-AC
converter converts the DC signal to an AC signal. The power amplifier is a type of RF power
amplifier used to convert a low-power AC signal into a larger signal of significant power. The
power amplifier is connected to the resonant antenna with an impedance matching block. The
most important reason that justifies the presence of an impedance matching block in WPMS is
to maximize the power transfer efficiency from WPMS-S to WPMS-D. Monitoring power
transfer information from WPMS-S to WPMS-D is one of the most important steps in the
charging process. The data communication block enables an exchange of the real-time power
information between WPMS-S and
...