17
Function of main parts
NAME
FUNCTION
INTELLIGENT POWER MODULE
It supplies 3-phase AC power to compressor.
SMOOTHING CAPACITOR
It stabilizes the DC voltage and supply it to INTELLIGENT POWER MOD-
ULE.
CURRENT TRANSFORMER
It measures the current of the compressor motor.
DIODE MODULE 1
It converts the AC voltage to DC voltage.
RESISTOR
It absorbs the rush current not to run into the main power supply circuit
when the power is turned ON.
RELAY
It keeps the RESISTOR, which restricts rush current, short-circuit while
the compressor is operating.
BOOSTER
CHOPPER
CIRCUIT
DIODE MODULE 2
It improves power factor.
It controls the bus-bar voltage.
SWITCHING POWER TRANSISTOR
REACTOR
2-8. INVERTER SYSTEM CONTROL
2-8-1. Inverter main power supply circuit
MUZ-GC, HC, FD25/35, GE25/35/42/50
POWER
SUPPLY
NOISE
FILTER
CIRCUIT
RESISTOR
SWITCHING
POWER
TRANSISTOR
RELAY
SMOOTHING
CAPACITOR
CURRENT
TRANSFORMER
COMPRESSOR
DIODE
MODULE1
DIODE
MODULE2
REACTOR
P
W
V
U
N
INTELLIGENT
POWER
MODULE
U
W
MS
3~
V
+
BOOSTER CHOPPER CIRCUIT
+
-
~
~
+
-
~
~
Function of main parts
NAME
FUNCTION
INTELLIGENT POWER MODULE
It supplies 3-phase AC power to compressor.
SMOOTHING CAPACITOR
It stabilizes the DC voltage and supply it to INTELLIGENT POWER MOD-
ULE.
DIODE MODULE 1
It converts the AC voltage to DC voltage.
RESISTOR
It absorbs the rush current not to run into the main power supply circuit
when the power is turned ON.
RELAY1
It passes the rush current to RESISTOR when the power is turned ON.
RELAY2
It keeps the RESISTOR, which restricts rush current, short-circuit while
the compressor is operating.
BOOSTER
CHOPPER
CIRCUIT
POWER FACTOR CORRECTION MODULE It improves power factor.
It controls the bus-bar voltage.
REACTOR
MUZ- EF
POWER
SUPPLY
NOISE
FILTER
CIRCUIT
RESISTOR
RELAY2
SMOOTHING
CAPACITOR
COMPRESSOR
DIODE
MODULE1
REACTOR
P
W
V
U
N
INTELLIGENT
POWER
MODULE
U
W
MS
3~
V
+
BOOSTER CHOPPER CIRCUIT
+
-
~
~
POWER
FACTOR
CORRECTION
MODULE
RELAY1
