kSIST FprEN IEC 63349-1:2025

Photovoltaic direct-driven appliance controllers - Part 1: General requirement

IEC 63349-1:2025 establishes control functions and operational performance requirements for photovoltaic direct-driven appliance (PVDDA) controllers.
PVDDA controllers are devices used for controlling power among power sources (such as a PV array, grid, energy storage, etc.) and appliances (such as an air-conditioner, refrigerator, water pump, etc.).
The requirements for PVDDA controllers are applicable to systems with voltages not higher than 1 500V DC or 1 000V AC. Safety and EMC requirements for the PVDDA controllers are under consideration and not covered by this document. Safety requirements for power converters connected to a PVDDA controller are listed as follows:
- for converter connected to PV array, IEC 62109‑1 and IEC 62109‑2 are applicable;
- for bi-directional converter connected to grid, IEC 62909‑1 and IEC 62909‑2 are applicable;
- for converter connected to energy storage, IEC 62477‑1 and IEC 62509 are applicable;
- for variable frequency drive, IEC 61800-5-1 is applicable.
Performance requirements for each individual power converter connected to a PVDDA controller refer to IEC 62093.

Gerätesteuerungen für direkt photovoltaisch betriebene Anwendungen – Teil 1: Allgemeine Anforderungen

Contrôleur d’appareil à entraînement direct photovoltaïque - Partie 1: Exigences générales

l'IEC 63349-1:2025 établit les fonctions de commande et les exigences de performance d'utilisation des contrôleurs d'appareil à entraînement direct photovoltaïque (PVDDA, Photovoltaic Direct-Driven Appliance). Les contrôleurs des PVDDA sont des dispositifs utilisés pour le contrôle de la puissance entre des sources d'alimentation (telles qu'un groupe photovoltaïque, un réseau, un stockage d'énergie, etc.) et des appareils (tels qu'un climatiseur, un réfrigérateur, une pompe à eau, etc.).
Les exigences relatives aux contrôleurs PVDDA s'appliquent aux systèmes dont les tensions ne dépassent pas 1 500 V en courant continu ou 1 000 V en courant alternatif. Les exigences de sécurité et de CEM des contrôleurs PVDDA sont à l'étude et ne sont pas couvertes par le présent document. Les exigences de sécurité des convertisseurs de puissance connectés au contrôleur PVDDA sont traitées comme suit:
- pour un convertisseur connecté à un groupe photovoltaïque, l'IEC 62109‑1 et l'IEC 62109‑2 s'appliquent;
- pour un convertisseur bidirectionnel connecté au réseau, l'IEC 62909‑1 et l'IEC 62909‑2 s'appliquent;
- pour un convertisseur connecté à un stockage d'énergie, l'IEC 62909‑1 et l'IEC 62509 s'appliquent;
- pour un dispositif d'entraînement à fréquence variable, l'IEC 61800-5-1 s'applique.
Les exigences de performance pour chaque convertisseur de puissance connecté à un contrôleur PVDDA se réfèrent à l'IEC 62093.

Fotonapetostni krmilniki naprav z neposrednim pogonom - 1. del: Splošne zahteve

General Information

• Status: Not Published
• Public Enquiry End Date: 06-Jan-2025
• ICS: 27.160 - Solar energy engineering
• Technical Committee: PVS - Solar photovoltaic energy systems
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 06-Oct-2025
• Due Date: 24-Nov-2025
• Completion Date: 30-Oct-2025
• Ref Project: FprEN IEC 63349-1:2025 - Photovoltaic direct-driven appliance controllers - Part 1: General requirements

Overview

IEC FprEN IEC 63349-1:2025 - Photovoltaic direct-driven appliance controllers (PVDDA) - Part 1: General requirements defines control functions and operational performance requirements for photovoltaic direct-driven appliance controllers. The standard applies to systems with rated voltages up to 1 500 V DC or 1 000 V AC and variable frequency drives (VFDs) up to 30 kW. It focuses on how a PVDDA controller manages power among sources (PV array, grid, energy storage) and appliance loads (e.g., air conditioners, refrigerators, water pumps). Safety and EMC requirements for the controller itself are under consideration and are not covered in this part.

Key topics and technical requirements

• Control strategies: Defines mandatory and optional control modes for managing power flow between PV, grid, storage and loads.
• Interface and communication: Requirements for controller interaction with converters (MPPT, VFDs, bi-directional grid converters, battery converters) - communication protocols are out of scope.
• Performance testing and test configurations: Procedures for verifying controller operation, including PV, grid, storage and appliance connection tests.
• Operational tests: Includes transition time tests (on-grid to off-grid), grid response (over/under voltage and frequency), power curtailment, load management, and switching times between charging/discharging.
• Environmental and reliability tests: Visual inspection, insulation, damp heat, cold start, vibration and high/low temperature operation tests.
• Appliance connection types: Test methods and recommendations for regulated DC appliance connections and unregulated DC appliance connections.
• Scope exclusions: Efficiency characterization/testing of PVDDA controllers is excluded from Part 1 (to be covered in Part 3). Safety and EMC requirements for the controller are not included.

Applications and who uses this standard

• Manufacturers of PVDDA controllers and embedded control firmware who need to design to recognized operational performance criteria.
• System integrators and OEMs deploying PV-direct driven appliances in rural electrification, agricultural pumping, refrigeration and HVAC systems.
• Test laboratories and certification bodies creating test plans for PVDDA compliance.
• Component suppliers (MPPTs, VFDs, battery converters) and product managers coordinating interoperability between converters and controllers.
• Standards committees and procurement teams specifying PVDDA performance in projects.

Related standards

This document references and aligns with existing IEC standards for connected converters and test equipment, for example:

• IEC 62109-1 / IEC 62109-2 (PV power converters safety)
• IEC 62909-1 / IEC 62909-2 (bi-directional grid converters)
• IEC 62509 (energy storage converter interfaces)
• IEC TS 63349-2 (PVDDA Part 2: operation modes and displays)
• IEC TS 63106 series (AC/DC power simulators), IEC TS 61836, IEC 62891, IEC TS 62786 series

For product design, testing and procurement, reference IEC 63349-1 for operational performance requirements and consult the referenced safety and EMC standards for converter and system safety compliance.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 63349-1:2025
01-januar-2025
Fotonapetostni krmilniki naprav z neposrednim pogonom - 1. del: Splošne zahteve
Photovoltaic direct-driven appliance controllers - Part 1: General requirement
Ta slovenski standard je istoveten z: prEN IEC 63349-1:2024
ICS:
27.160 Sončna energija Solar energy engineering
oSIST prEN IEC 63349-1:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 63349-1:2025
oSIST prEN IEC 63349-1:2025
82/2291/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63349-1 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-09-27 2024-12-20
SUPERSEDES DOCUMENTS:
82/2230/CD, 82/2255A/CC
IEC TC 82 : SOLAR PHOTOVOLTAIC ENERGY SYSTEMS
SECRETARIAT: SECRETARY:
United States of America Mr George Kelly
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
Energy Efficiency,Safety
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which
they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Photovoltaic direct-driven appliance controllers - Part 1: General requirement

PROPOSED STABILITY DATE: 2030
NOTE FROM TC/SC OFFICERS:
This project was discussed and supported by WG6 during their meeting in 2024-04.

electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

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1 CONTENTS
3 FOREWORD . 4
4 1 Scope . 6
5 2 Normative references . 6
6 3 Terms and definitions . 7
7 4 Schematic drawing of PVDDA controller applications . 8
8 5 General requirements for PVDDA controller . 11
9 5.1 Operation conditions . 11
10 5.2 Controller input ratings . 11
11 5.3 Controller output ratings . 11
12 6 Performance requirements and test . 11
13 6.1 Control strategy . 11
14 6.1.1 Mandatory strategy . 11
15 6.1.2 Optional strategy . 12
16 6.2 Test configuration of PVDDA controller . 12
17 6.3 Test condition and general evaluations . 12
18 6.3.1 Test condition . 12
19 6.3.2 Visual inspection . 13
20 6.3.3 Insulation test . 13
21 6.3.4 Damp heat test . 13
22 6.3.5 Cold test . 13
23 6.3.6 Vibration test . 13
24 6.4 PV connection. 14
25 6.5 Grid connection test . 14
26 6.5.1 General . 14
27 6.5.2 Power factor of grid-connected AC-DC converter . 14
28 6.5.3 Transition time from on-grid to off-grid . 15
29 6.5.4 Response to grid side over/under voltage and frequency . 16
30 6.5.5 Grid power curtailment and load management . 16
31 6.6 Energy Storage connection . 17
32 6.6.1 General . 17
33 6.6.2 Switching time between charging and discharging . 17
34 6.7 Variable frequency drive load connection test . 18
35 6.8 Regulated DC appliance connection test . 19
36 6.8.1 Recommendations . 19
37 6.8.2 Test procedure . 20
38 6.9 Unregulated DC appliance connection test . 21
39 6.9.1 Recommendations . 21
40 6.9.2 Test procedure . 23
41 7 High and low temperature operation test . 24
42 7.1 High temperature operation test . 24
43 7.2 Low temperature start-up . 24
44 8 Report . 24
45 Annex A (Normative)  Summary of test results . 26
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47 Figure 1 – Schematic drawing of PVDDA controller (including all options) . 8
48 Figure 2 – PVDDA controller applied for equipment configuration PA . 8
49 Figure 3 – PVDDA controller applied for equipment configuration PAG . 9
50 Figure 4 – PVDDA controller applied for equipment configuration PAS. 9
51 Figure 5 – PVDDA controller applied for equipment configuration PAGS . 10
52 Figure 6 – Test configuration of PVDDA controller . 12
53 Figure 7 – Transition time from on-grid to off-grid . 15
54 Figure 8 – Transition time of t -t curve . 19
1 0
55 Figure 9 – Transition time of t -t curve . 20
3 2
56 Figure 10 –Transition time of t -t curve . 22
5 4
57 Figure 11 –Transition time of t -t curve . 22
7 6
59 Table 1 – Requirement clauses for typical equipment configuration . 10
60 Table 2 – Grid side power factor test . 14
61 Table 3 – Transition time from on-grid to off-grid test . 15
62 Table 4 – Grid power curtailment and load management . 17
63 Table 5 – Switching time between charging and discharging test . 18
64 Table 6 – DC appliance connection test . 20
65 Table 7 – Comparison between regulated DC appliance connection and unregulated
66 DC appliance connection . 23
67 Table 8 – DC appliance connection test . 23
68 Table A.1 –summary of test . 26
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70 INTERNATIONAL ELECTROTECHNICAL COMMISSION
71 ____________
73 PHOTOVOLTAIC DIRECT-DRIVEN APPLIANCE CONTROLLOERS
75 Part 1: General requirements
79 FOREWORD
80 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
81 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
82 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
83 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
84 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
85 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
86 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
87 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
88 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
89 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
90 consensus of opinion on the relevant subjects since each technical committee has representation from all
91 interested IEC National Committees.
92 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
93 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
94 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
95 misinterpretation by any end user.
96 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
97 transparently to the maximum extent possible in their national and regional publications. Any divergence between
98 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
99 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
100 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
101 services carried out by independent certification bodies.
102 6) All users should ensure that they have the latest edition of this publication.
103 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
104 members of its technical committees and IEC National Committees for any personal injury, property damage or
105 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
106 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
107 Publications.
108 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
109 indispensable for the correct application of this publication.
110 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
111 rights. IEC shall not be held responsible for identifying any or all such patent rights.
112 IEC 63349-1 has been prepared by IEC technical committee 82: Solar photovoltaic energy
113 systems. It is an International standard.
114 The text of this International Standard is based on the following documents:
Draft Report on voting
XX/XX/FDIS XX/XX/RVD
116 Full information on the voting for its approval can be found in the report on voting indicated in
117 the above table.
118 The language used for the development of this International Standard is English.
119 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
120 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
121 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
122 described in greater detail at http://www.iec.ch/standardsdev/publications.

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123 The committee has decided that the contents of this document will remain unchanged until the
124 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
125 specific document. At this date, the document will be
126 • reconfirmed,
127 • withdrawn,
128 • replaced by a revised edition, or
129 • amended.
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132 PHOTOVOLTAIC DIRECT-DRIVEN APPLIANCE CONTROLLERS-
134 Part 1: General requirements
138 1 Scope
139 IEC 63349 series documents establish requirements for photovoltaic direct-driven appliance
140 (PVDDA) controllers. The requirements are applicable to systems with voltages not higher than
141 1500V DC or 1000V AC, and where the output power of variable frequency drive (VFD) not
142 higher than 30kW.
143 PVDDA controllers are devices used for transforming, regulating and controlling power among
144 sources (such as PV array, grid, energy storage, etc.) and appliance loads (such as air-
145 conditioner, refrigerator, water pump, etc.). Through a PVDDA controller, power generated by
146 PV system is directly applied to the load, with or without a connection to the grid. PVDDA
147 controllers shall communicate with connected power converters and power sources, but
148 communication protocols are not covered in this document.
149 A PVDDA controller may be connected to multiple power converters such as: a Maximum Power Point
150 Tracking (MPPT) system, a VFD, a bi-directional grid-connected AC/DC power converter, an energy
151 storage charger/discharger, and converters for DC or AC appliances, etc. However, many of these
152 devices have their own applicable standards, therefore this document does not intend to create any new
153 requirements for these devices. Instead, it covers the control functions and the operational performance
154 between the controller and these power converters.
155 Safety requirements of the PVDDA controller are not covered by this document. Safety
156 requirements of power converters connected to the PVDDA controller are listed as follows:
157 a) converter connected to PV array, IEC 62109-1 and IEC 62109-2 is applicable;
158 b) bi-directional converter connected to grid, IEC 62909-1 and IEC 62909-2 is applicable;
159 c) converter connected to energy storage, IEC 62509 is applicable;
160 d) variable frequency drive, IEC 60730-1 is applicable.
161 Characterization and testing of the PVDDA controller’s efficiency are not included in the scope of this
162 part of the document. They will be included in part 3 of this document (under development).
163 2 Normative references
164 The following documents are referred to in the text in such a way that some or all of their content
165 constitutes requirements of this document. For dated references, only the edition cited applies.
166 For undated references, the latest edition of the referenced document (including any
167 amendments) applies.
168 IEC 60038 IEC standard voltages
169 IEC 60068-2-6 Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
170 IEC TS 61836, Solar photovoltaic energy systems - Terms, definitions and symbols
171 IEC 62109-1, Safety of power converters for use in photovoltaic power systems – Part 1:
172 General requirements
173 IEC 62109-2, Safety of power converters for use in photovoltaic power systems – Part 2:
174 Particular requirements for inverters
175 IEC TS 62786-1, Distributed energy resources connection with the grid

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176 IEC TS 62786-3, Distributed energy resources connection with the grid – Part 3: Additional
177 requirements for stationary battery energy storage system
178 IEC 62891, Maximum power point tracking efficiency of grid connected photovoltaic inverters
179 IEC 62909-1, Bi-directional grid-connected power converters – Part 1: General requirements
180 IEC 62909-2, Bi-directional grid-connected power converters – Part 2: Interface of GCPC and
181 distributed energy resources
182 IEC TS 63106-1, Simulators used for testing of photovoltaic power conversion equipment –
183 Recommendations – Part 1: AC power simulators
184 IEC TS 63106-2, Simulators used for testing of photovoltaic power conversion equipment –
185 Recommendations – Part 2: DC power simulators
186 IEC TS 63349-2, Photovoltaic direct-driven appliance controllers – Part 2: Operation modes
187 and graphic display
188 3 Terms and definitions
189 For the purposes of this document, the terms and definitions given in IEC TS 61836 apply.
190 ISO and IEC maintain terminological databases for use in standardization at the following
191 addresses:
192 • IEC Electropedia: available at http://www.electropedia.org/
193 • ISO Online browsing platform: available at http://www.iso.org/obp
194 3.1
195 PV direct-driven appliance (PVDDA)
196 appliance which directly uses DC electrical power generated by a PV array, and which may be
197 connected to the electrical grid, energy storage devices, or other sources and loads.
198 3.2
199 PV direct-driven appliance (PVDDA) controller
200 device of PVDDA used for power transformation, power regulation and power control
201 3.3
202 variable frequency drive (VFD)
203 class of drive products that seek to control the speed of a motor, typically an induction motor,
204 through a proportional relationship between drive output voltage and commanded output
205 frequency
206 [SOURCE: IEC 61800-7-202:2015, 3.1.52]
207 3.4
208 curtailment
209 reduction of the active power output of renewable energy generating units or power plants below
210 the maximum which could be fed into an electric power network in the prevailing conditions
211 [SOURCE: IEC 62934:2021, 3.7.5]
212 3.5
213 load management
214 reduction or disconnection of power usage from grid, either automatically or manually (usually
215 as requested by the electric power network operator)
216 3.6
217 commanded output frequency of VFD
218 the target frequency of the VFD proportional to the required load value

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219 4 Schematic drawing of PVDDA controller applications
220 The PVDDA controller is applied in a PV system which may be configured with a PV array, grid,
221 energy storage, DC source, other sources and appliances. The schematic drawing is shown in Figure
222 1.
Power connection
PVDDA
controller
Control connection
DC
DC
PV Array (MPPT)
Variable
VFD
frequency
Appliance
AC
DC
Grid
DC
Fixed frequency
Appliance
AC
DC
DC
Energy Storage
DC Bus
DC
Regulated DC
DC Appliance
DC or
AC
DC
Unregulated DC
Other source
Appliance
DC source
224 Note: Regulated DC appliance refers to an appliance which is connected to a DC-DC converter and is usually
225 sensitive to the voltage deviation; unregulated DC appliance refers to an appliance which is directly connected to the
226 DC bus and is insensitive to voltage deviation.
227 Figure 1 – Schematic drawing of PVDDA controller (including all options)
228 PVDDA controllers can be applied for different equipment configurations. Typical configurations are
229 classified as following (see definitions in IEC TS 63349-2):
230 Equipment configuration PA: equipment configuration includes PV array and appliances, see Figure 2.
PVDDA
Power connection
controller
Control connection
DC
DC
PV Array (MPPT)
Variable
VFD
frequency
Appliance
232 Figure 2 – PVDDA controller applied for equipment configuration PA
233 Equipment configuration PAG: equipment configuration includes PV array, grid and appliances,
234 see Figure 3.
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PVDDA
Power connection
controller
Control connection
Optional configuration
DC
DC
PV Array (MPPT)
Variable
VFD
frequency
Appliance
AC
DC
Grid
DC
Fixed frequency
AC Appliance
DC
Regulated DC
DC Appliance
Unregulated DC
Appliance
236 Figure 3 – PVDDA controller applied for equipment configuration PAG
237 Equipment configuration PAS: equipment configuration includes PV array, energy storage and
238 appliances, see Figure 4.
Power connection
PVDDA
controller
Control connection
Optional configuration
DC
DC
PV Array (MPPT)
Variable
VFD frequency
Appliance
DC
Fixed frequency
AC Appliance
DC
DC
Energy Storage
DC Bus
DC
Regulated DC
DC Appliance
Unregulated DC
Appliance
240 Figure 4 – PVDDA controller applied for equipment configuration PAS
241 Equipment configuration PAGS: equipment configuration includes PV array, grid, energy
242 storage and appliances, see Figure 5.

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Power connection
PVDDA
controller
Control connection
Optional configuration
DC
DC
PV Array (MPPT)
Variable
VFD frequency
Appliance
AC
DC
Grid
DC
Fixed frequency
AC Appliance
DC
DC
Energy Storage
DC Bus
DC
Regulated DC
DC Appliance
Unregulated DC
Appliance
244 Figure 5 – PVDDA controller applied for equipment configuration PAGS
245 Power converters connected to the PVDDA converter shall be controlled to cooperate to keep
246 the system working in a stable and reliable state. For all operation modes of each system, refer
247 to IEC TS 63349-2 Photovoltaic direct-driven appliance controllers – Part 2: Operation modes
248 and graphic display. Controllers applied for each equipment configuration shall comply with the
249 following requirements specified in Table 1.
250 Table 1 – Requirement clauses for typical equipment configuration
Equipment configuration PA(Fig 2) PAG(Fig 3) PAS(Fig 4) PAGS(Fig 5)
5.1 Control ratings √ √ √ √
5.2 Operation conditions √ √ √ √
5.3 Control strategy √ √ √ √
6.1 Test configuration of PVDDA
√ √ √ √
controller
6.2 Test condition and evaluation
√ √ √ √
6.3 Preconditioning test
√ √ √ √
6.4 PV connection
√ √ √ √
(6.5 Grid connection)
√ √
6.5.1 General
6.5.2 Grid side power factor √ √
6.5.3 Transition time from on-grid √ √
to off-grid
6.5.4 Response to grid side √ √
over/under voltage and frequency
(6.6 Energy storage connection)  √ √
6.6.1 General
6.6.2 Switching time between
√ √
charging and discharging
6.7 variable frequency drive load
√ √ √ √
connection
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6.8 Regulated DC appliance √ √ √
connection
(applied when (applied when (applied when
configured with configured with configured with
regulated DC regulated DC regulated DC
appliance） appliance） appliance）
6.9 Unregulated DC appliance √ √ √
connection
(applied when (applied when (applied when
configured with configured with configured with
unregulated DC unregulated DC unregulated DC
appliance) appliance) appliance)
(7 Operation test)
√ √ √ √
7.1 High temperature operation
test
7.2 Low temperature start-up
√ √ √ √
252 5 General requirements for PVDDA controller
253 5.1 Operation conditions
254 As a minimum, the controller shall work in the following ambient environmental conditions:
255 a) temperature between -25 ℃ to 45 ℃;
256 b) relative humidity between 0% to 95%, no condensation;
257 c) altitude above sea level not more than 2000 m.
258 Manufacturers can specify their own conditions beyond above ranges.
259 5.2 Controller input ratings
260 Following ratings shall be marked on the equipment or specified on the manufacturer’s manual:
261 a) PV array: working voltage range and maximum current;
262 b) Grid: voltage and frequency;
263 c) Energy storage: maximum voltage and current;
264 d) DC source: maximum and minimum voltage, current and tolerance.
265 5.3 Controller output ratings
266 Following ratings shall be marked on the equipment or specified on the manufacturer’s manual:
267 a) VFD: maximum and minimum output voltage, maximum output current, maximum and
268 minimum output frequency;
269 b) Fixed frequency appliance converter: rated voltage and frequency, maximum current or
270 power;
271 c) Regulated DC appliance converter: rated voltage, maximum current or power.
272 6 Performance requirements and test
273 6.1 Control strategy
274 PVDDA controller may have mandatory strategies and optional strategies under different
275 controller operation modes (see mode details on IEC TS 63349-2), and it shall be able to adjust
276 the control strategy according to the setup by operators. Detailed information shall be provided
277 in the product manual.
278 6.1.1 Mandatory strategy
279 a) grid power curtailment;

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280 b) load management.
281 6.1.2 Optional strategy
282 a) Appliance performance priority - The key point of this control strategy is to guarantee the
283 appliance operates as desired. (e.g. air conditioning has the lowest temperature fluctuation
284 from the set point for the best comfortable level);
285 b) System economy priority - The key point of this control strategy is to have the lowest system
286 operation cost. The electricity price for supply to or consume from the grid may be different
287 according to the time of the day, active or reactive power, etc. This control strategy may
288 sacrifice comfortable level from the appliances. (e.g. air conditioning has a higher
289 temperature fluctuation from the set point);
290 c) Or others.
291 6.2 Test configuration of PVDDA controller
292 All the tests from clause 6.2 to 6.10 and clause 7 can be conducted on one sample or multiple
293 samples (to reduce the whole test program duration). If more than one sample is used, the
294 preconditioning test in 6.4 shall be conducted on all samples. Tests from 6.5 to 6.10 are not
295 required in any particular sequence. The test configuration of PVDDA controller is shown in
296 Figure 7.
Power connection
PVDDA
controller
Control connection
Switch
S1
Data acqusition
DC
DC
T1 D1
PV Simultor (MPPT)
A6
Variable
VFD
frequency
S2 T6 D6
Appliance
AC
DC
T2 D2
A7
Grid simulator
DC
Fixed frequency
AC Appliance
T7 D7
S3
DC
DC
T3 D3
A8
Energy Storage
DC Bus
DC
Regulated DC
simulator
DC Appliance
S4
T8 D8
DC or
AC
A9
DC
T4 D4
Unregulated DC
Other source
Appliance
T9 D9
S5
T5 D5
DC source
299 Figu
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