Siemens SINAMICS PERFECT HARMONY GH180 - Parallel Drive Control; Paralleling Multiple Drives

8.20 Paralleling Multiple Drives
It is possible to combine multiple drives in parallel to provide a higher power output than is
available from a single drive. There are two possible implementations of paralleling drives with
NXGpro control. The following sections provide an overview of each implementation along with
the available features with each mode.
8.20.1 Parallel Drive Control
Paralleling Multiple Drives on a Synchronous Motor
This implementation uses a PLC as a master controller that coordinates and monitors the
operation of two or more drives in parallel. Each drive operates independently of the other
drives. This mode of operation provides the following features:
• Ability to operate multiple drives (maximum of four) with a single three-phase synchronous
motor or a multi-phase synchronous motor.
• Single HMI that collects data from all of the parallel drives.
• Drives synchronize to each other without external inputs, and maintain independent
operation of speed and 󹪞ux regulators while sharing torque current and 󹪝eld current.
• Fast bypass is possible, and drives can operate with unequal number of cells.
• User can introduce a drive into a system that is already in operation.
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Figure 8-23 Parallel Drive Control with Synchronous Motor
Paralleling Multiple Drives on an Induction Motor
Operating two drives in parallel on a single induction motor requires balancing the 󹪞ux provided
by each drive.
Advanced Operating Functions
8.20 Paralleling Multiple Drives
NXGPro+ Control Manual
316 Operating Manual, A5E50491925A