Power Distribution Method; Introduction On Key Electric Parts - Gree GMV-S120WL/A-S Service Manual

5.Power Distribution

5.1 Power distribution method

5.2 Introduction on key electric parts

Name
Wave filtering board
Air switch
IPM module
GMV5 Home DC Inverter Multi VRF Units
Picture
309
Introduction of functions
It's mainly for filtering interference in
the power source,
anti-interference performance of unit
in inferior quality of power sourece;
second, it can restrain
interference to power source to
prevent the operation of unit from
impacting other home appliances'
operation.
For connection and disconnection of
main circuit, can protect the unit in
overcurrent and short
situations.
Inside the IPM module, it
integrated 3 sets of complementary
IGBT tubes, their connection and
disconnection can be controlled by
PWM wave, which can apply the
voltage of DC bus to different winding
of stator in different period of time,
and can bring current in the stator and
at the same time induce magnetic
field in rotor coil, so as to drive the
operation of rotor and compressor.
protecting
unit's
circuit
has