DC Inverter Side Discharge VRF Ⅱ for North America
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3.2 Main electric parts
It main effect is to eliminate the
interference of power for protecting
unit’s anti-interference capability and
prevent the interference to other electric
appliances.
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 the stator. Meanwhile,
magnetic field will be generated on the
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.
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