Gree GMV-PD100W/NAB-K Service Manual page 116

DC Inverter Multi
VRF Service Manual
Air switch
It used for
GMV-Pd100W/NaB-K,
GMV-Pd120W/NaB-K,
GMV-Pd140W/NaB-K,
GMV-Pd160W/NaB-K,
IPM module
It used for
GMV-Pd100W/NaB-K,
GMV-Pd120W/NaB-K,
GMV-Pd140W/NaB-K,
GMV-Pd160W/NaB-K,
IPM module
It used for
GMV-Pd140W/NaB-M,
GMV-Pd160W/NaB-M,
PFC module
It used for
GMV-Pd100W/NaB-K,
GMV-Pd120W/NaB-K,
GMV-Pd140W/NaB-K,
GMV-Pd160W/NaB-K,
112
For connecting and disconnecting
the circuit of main loop, provided with
overcurrent and short-circuit protection.
The IPM module integrates 3 pairs of
complementary IGBT tube and controls
their connection and disconnection
via PWM wave, so that the DC bus
voltage is applied to different stator
windings of the compressor in different
time section and the current is hence
generated on the stator. Meanwhile,
rotor windings, thus to push the rotor
and drive the compressor to run.
The PFC module integrates 4 diode
tubes and 2 MOS tubes. They
convert the AC input power into DC
power. Meanwhile, the connection
and disconnection of MOS tube is
controlled via PWM wave, thus to
realize the voltage rise under the
function of electric induction.