Nidec Leroy-Somer Powerdrive MD Smart, Руководство по интеграции

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GENERAL INFORMATION
Powerdrive MD Smart Integration Guide
5751 en - 2021.10 / e
GENERAL
INFORMA
TION
1.3 - Associating components according to architecture
Thanks to its modular structure, the components of the Powerdrive MD Smart make it possible to assemble all kinds of architecture
such as 6 (with or without active/passive filtering), 12, 18, or 24 Pulse, Active Front-End (AFE), DC Bus systems, DC/DC converters.
The examples below describe the principle of assembling components for different architectures up to 500 kW. For higher powers,
a parallelisation module (inverter) will be used to mount in parallel the number of elements needed to achieve the desired power.
6-pulse variable speed drive
Need : variable speed drive used for a typical environment. To slow down a load with short deceleration times or to perform rapid
braking for example, it is necessary to provide a Braking Module option.
Architecture
Powerdrive MD Smart components
Rectifier Control module INVERTER
Braking
module option
6-pulse variable speed drive (typical)
1 single rectifier
This variable speed drive offers a THDI
of 40%. A low harmonic option with
active filter addition may be considered
to lower the THDI to 5%.
MD3REC1
+
Filtering §1.2.1
MD3CTL
MD3INV
MD3TF
+ Cable kit §4.9
The options can be found in section §2.5.1.2
Active Front End (AFE) variable speed drive
Need : variable speed drive or multiple variable speed drive with “Active Front End” (regenerative) active synchronous rectifier for
optimising energy bills and reducing harmonics (THDi ≤ 5 %). For more information, see §1.2.2.2 Active rectifiers.
Architecture
Powerdrive MD Smart components
Preload module
Active rectifier
(network
inverter)
Control module
(network inverter)
Motor inverter
Control module
(motor inverter)
Active Frond End
variable speed drive
MD3PRG
filtering
MD3CTL
MD3INV
MD3CTL
+ Cable kit §4.9
The options can be found in section §2.5.2.1