Power Distribution Of Unit - Gree ULTRA heating GMV5 Multi VRF Series Service Manual

(7) Failure start-up

3 Power Distribution of Unit

3.1 Power distribution of unit
The main loop is showed by bold line (line width: 1mm); the control loop is showed by slim line (line width: 0.2mm).
Power wiring board
Filter plate
4-way valve,by-pass
valve,electric heating belt
and control signal
3.2 Main electric parts
Name
IPM Module
PFC module
Drive board
Temperatuer sensor,electric
expansion valve,high
pressure and low pressure
switch and so on
（Bold line is the power line and the slim line is the control line）
Photo
Ultra Heating GMV5 Multi VRF
Compressor
Fan
Function introduction
There are three complemental IGBT tube inside the IPM
module. They are controlled by PWM wave and then bring
the pressure of DC bus bar to different stator windings of
compressor at different stage, and then generate current on
stator winding, and push the operation of rotor and then drive
compressor to operate.
Four diodes and two MOS pipe are intergrated inside the
PFC module. It will transform AC input power into DC power.
Meanwhile, MOS pipe is controlled by PWM wave. Pressure
will be increased by induction.
for North America
71