Page 100 - Gefran - Inverter system and power supply unit (ADV200 Drive family)

100 Inverter System & Power Supply Unit

6.5 Choosing the power supply unit and drive
AFE200 • Active Front End Regenerative Power Supply Unit
Design • Single-motor calculation based on motor output power

AFE200 drives are normally used in applications that require Mains: Vmains = three-phase 400Vac
the re-introduction of power into the mains. They can also be
ADV200 - 4 • Basic
used when regeneration is not required, to achieve unitary Motor: Poutm = 132kW
cos phi or low total harmonic distortion values (which standard Voutm = 400Vac
inverters do not guarantee, even with a DC or line choke). ηm = 0.95;
This section provides some examples of design, from the sim- Im = 236A
plest, single-motor configuration to more complex ones.
As a general rule, the AFE2000 should be at least the same Application: Requires 100% of motor power
size as the drive, which is usually an ADV200-DC. Requested overload = 150%
In certain cases the size can be chosen according to the
work cycles and load profiles of each drive, in both motor or
generator mode. > Calculation of the current required on the DC-link:
Another calculation to be performed is the sum of the loads
connected to the DC-LINK, obtained from the total of the
parallel connections. IDc = Poutm [KW] 132 * 1000 = 220 A
The sum of the loads of each drive must be less than the VDclinK * ηm * ηD 650 * 0.95 * 0.97
maximum value specified in the AFE200 user guide in order to
guarantee correct pre-load circuit operation.
Precharge kit must be selected according to AFE size and the > Choosing the power supply unit:
capacity connected to the DC-Link (see AFE manual, chapter
"5.5 Precharge Kit"). The AFE200 must be capable of delivering a current of ≥ 220 A
LCL Filter must be selected considering the use of the AFE: Choose the size with the appropriate characteristics from the
Heavy Duty or Low Duty overload (see AFE manual chapter catalogue (section AFE200 "2.7 Output Data" on page 39):
"5.6 LCL Filters"). AFE200-61320.

Key to symbols
> Choosing the drive:
Poutm Motor output power (continuous operation)
Voutm Motor rated voltage Choose the size with the rated current required by the motor
Vmains Rated voltage of the AC power supply
Poutd Drive output power (light or heavy overload) (≥ 236A) from the catalogue (section ADV200-DC "2.7 Output
ηm Typical motor efficiency Data" on page 39):
ηd Typical drive efficiency (0.97) With a 650 Vdc drive:
Pdc Power requested by the DC - Link
Im Motor rated current ADV-71600-...-DC (In = 270A, OK).
Vdclink DC-link rated voltage
650Vcc at 400Vac Drive Description Code Q.ty
750Vcc at 460Vac
930Vcc at 575Vac ADV200-DC ADV-71600-KXX-4-DC S9020DC 1
1120Vcc at 690Vac
AFE + components Description Code
AFE regenerative AFE200-61320-KXX-4 S9AF04 1
Note! For special applications please contact techno- Pre-charge kit PRE CHARGE KIT- S728281 1
help@gefran.com. AFE-90/132-4
Kit LCL (required Heavy Duty LCL-Kit-AFE-4-132-HD S7LC03 1
overload)
EMI filter EMI FN3120 -480V-230A S74EE 1
Fuses mains side connection S1üf1/110/315A/690V F4G30 3

Checking total DC-link capacity:
AFE200-61320 with ADV-71600-...-4-DC = 13600 + 16800 =
30400 μF ≤ 43000 μF (OK). See table on page 104