Goodrive350-UL Series VFD
Product overview
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Chapter 3 Product overview
3.1 What this chapter contains
This chapter mainly introduces the operation principles, product features, layouts, nameplates and
model instructions.
3.2 Basic principle
Goodrive350-UL series VFD is used to control asynchronous AC induction motor and
permanent-magnet synchronous motor. The figure below shows the main circuit diagram of the VFD.
The rectifier converts 3PH AC voltage into DC voltage, and the capacitor bank of the intermediate
circuit stabilizes the DC voltage. The inverter converts DC voltage into the AC voltage used by AC
motor. When the circuit voltage exceeds the maximum limit value, external brake resistor will be
connected to intermediate DC circuit to consume the feedback energy.
DC reactor
(+)
P1
PE
PE
Fig 3.1 Main circuit (VFDs of 220V 18.5–55kW; 460V ≥37kW)
(+)
(-)
PB
PE
PE
Fig 3.2 Main circuit (VFDs of 220V ≤15kW; 460V ≤30kW)
Содержание GD350-004G-2-UL
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