Hardware Principles; Basic Principles - INVT Goodrive880 Series Hardware Manual

Goodrive880 Series Inverter Unit Hardware Manual
Based on the heavy overload continuous run current (I
of the rated current. See Figure 2-6.

2.7 Hardware principles

2.7.1 Basic principles

The inverter unit converts DC voltage into AC frequency-variable voltage and supports driving asynchronous
and synchronous motors. The inverter unit models are classified into the 400V voltage class and 690V
voltage class. The A1i–A4i inverter unit consists of energy storage capacitor, IGBT, and other components.
Figure 2-7 shows the simplified main circuit.
No. Name
1 Bus capacitor
2 Inverter module To convert DC current to AC current.
202311 (V1.0)
Figure 2-5 Light overload application
Current (A)
Short-time overload current
150%I
10s
Short-time overload
current 110%I
60s
Figure 2-6 Heavy overload application
Current (A)
Short-time overload
current 180%I
Short-time overload
10s
current 150%I
60s
Figure 2-7 Main circuit diagram of the A1i–A4i inverter unit
DC+
1
DC -
To make the voltage stable by filtering out the AC part from the bus voltage.
LD
10s
LD
Light overload rated
current I
LD
60s
300s
), the inverter unit can keep running for 60s at 150%
Hd
HD
10s
HD
Heavy overload
rated current I
HD
60s
300s
2
Description
Product overview
Rated
current
Time (s)
Rated
current
时间(s)
U
V
W
PE
10