Siemens Eupec, Manual

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Application Notes MicroHarmony Cell Sizes 40 - 260A Manual
9-16 19001467: Version 1.0
s
9
As an example, consider the 140A cell operating at rated output current with nominal input voltage in a 45
°
C
ambient:
TO = 45
°
C
Vx = 1015 / 3=338 + 12V ripple = 350VDC
Ix =140A x 0.89 / 4 caps in parallel = 31.15Arms
Δ
TO =5 x (31.15/21.4) = 7.28. (A safety factor of 6
°
C can be added to this)
Vo/Vx = 450 / 350 = 1.286 > 1.25, therefore = 1.25
LX
= 5000 x 2
(85 - 45) / 10
x 2
(5 - 7.28 ) / 10
x (1.25)
4.4
= 5000 x 16 x 0.8538 x 2.67 = 182,330 hours (20.8 years)
9.8.5 Disposal
Aluminum electrolytic capacitors with non-solid electrolyte principally include high-purity aluminum foils, capacitor
paper, electrolyte, aluminum case, cover and sealing parts (phenolic, thermoplastic, rubber and phenolic board),
insulating sleeve (polypropylene, polyester or polyvinyl chloride) and, perhaps, safety-vent plugs made of synthetic
rubber. If incinerated, be certain that the temperature is more than 1200 °C. Disposal is permitted in appropriate
landfills.
9.9 Output Voltage Capability
9.9.1 Normal Operation
The maximum output voltage of the drive in terms of the number of ranks and the secondary-side cell voltage is given
as:
Vout = 1.78 x N x Vcell x Tap x Vin / Vin,rated x M
LX = LR x 2
(Tx - To) / 10
x 2
(
Δ
Tx -
Δ
To) / k
x (Vo/Vx)
4.4
LX: Expected Life (Hrs) 5600
μ
F (40-140A) 10,000
μ
F (200-260A)
LR: Endurance Test Life (Hrs) = 5000 = 10000
TX: Maximum Rated Ambient (
°
C) = 85 = 85
TO: Actual Ambient (
°
C) = drive ambient = drive ambient
Δ
TX: Rated
Δ
T at Max Ambient (
°
C) = 5 = 5
Δ
TO: Actual
Δ
T from Application (
°
C) =
Δ
Tx x (Ix /Io)
2
=
Δ
Tx x (Ix /Io)
2
k: Acceleration Factor = 10 = 10
Vo: Rated Voltage (V) = 450 = 450
Vx: Actual Applied Nominal Voltage (V) = Vcell x 1.35/3+12 = Vcell x 1.35/3+13
Io: Rated Ripple current = 21.4 = 34.7
Ix: Actual Ripple Current = 0.89 x Iout / Np = 0.89 x Iout / Np
Note: If Vo/Vx > 1.25, then use Vo/Vx = 1.25, otherwise use Vo/Vx