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参数资料
| 型号： | VI-HAM-IM |
| 元件分类： | 电源模块 |
| 英文描述： | 2-OUTPUT 600 W AC-DC PWR FACTOR CORR MODULE |
| 文件页数： | 5/10页 |
| 文件大小： | 662K |
| 代理商： | VI-HAM-IM |
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
HAM, Harmonic Attenuation Module
Rev. 2.1
Page 4 of 10
Set your site on VICOR at vicorpower.com
The HAM Figure 1, consists of a full-wave rectifier, a
high-frequency zero-current switching (ZCS) boost converter,
active inrush current limiting, short-circuit protection, control
and housekeeping circuitry. The incoming AC line is rectified
and fed to the boost converter. The control circuitry varies the
operating frequency of the boost converter to maintain the
output voltage of the HAM above the peak of the incoming
line, while forcing the input current to follow the waveshape
and phase of the line voltage. The AC input current follows the
voltage waveform and a power factor better than 0.99 is
achieved. Operating efficiency of the boost converter is
optimized at any incoming line voltage by an adaptive output
voltage control scheme.
The output voltage of the HAM varies as a function of
incoming AC line voltage, Figure 3. On a nominal 120 Vac line
the output voltage of the HAM is 260 Vdc — well within the
input operating voltage range of Vicor VI-26x and VI-J6x
converters. As input line increases, so does the HAM output
voltage; at 220 Vac the delivered voltage will be about 350 V.
For any given input line voltage, the HAM maintains enough
headroom between the output voltage and peak input voltage to
ensure high quality active power factor correction without
unnecessarily sacrificing operating efficiency.
Note:
Non-Isolated
Output
Gate In
Gate Out
ZCS
Boost
Converter
Inrush
& Short
Circuit
Protection
High Frequency
Control
Voltage
Waveform
Current
Sense
AC
Line
Control
& House-
keeping
Circuitry
Output Voltage
Module Enable
Power OK
DC
Out
Recti-
fier
Aux. Supply
+
–
NOTE: No input to output isolation.
Input Voltage
VRMS
Rated Output Power
Output Voltage
Output
P
o
wer
(W)
Output
V
o
lta
g
e
(Vdc)
350
400
450
500
550
600
650
85
190
260
330
400
365
435
295
225
95 105 115 125 135 145 155 165 175 185 195 205 215 225 235 245 255 265
110 Vac
700
derate output power 8 W/V for Vin <110 Vac
Figure 1 — HAM block diagram
Figure 2 — Input voltage and current wave forms, with and
without power factor correction
Without PFC
With PFC
Figure 3 — Output voltage and power rating versus input voltage
TECHNICAL DESCRIPTION
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