Page 693 - Product Catalog V17 - Flip Book PDF

Variable Speed Drives

ACQ80 SOLAR PUMP DRIVE

ACQ80 Drive Work Principle
ACQ80 drives are intended to be used for speed control of Built-in MPPT logic monitors available DC power and allows to
3-phase AC pump motors and powered from either AC grid or DC avoid multiple restarts of pump motor during early morning and
photo-voltaic array. With only DC input, the drive starts running late evening time when PV array is the only source of power to the
a connected pump whenever there is enough solar radiation drive. During an ON command to the drive, the flow rate depends
available to generate electricity required to run the pump smoothly on the power availability as explained in the below graph.
with controlled acceleration and declaration even when there are
sudden changes in DC voltage due to cloud passing. This helps to
avoid motor and pump damage.

Solar power source Operation with solar power only

Early Morning Midday
PV Array Evening
Max PV DC power > Motor Power

Nominal PV DC power
= Motor power

Solar pump 4
drive AC Power Low PV DC power

DC Power
Full flow from pump

Pump and Flow rate decrease
pump motor Flow rate increase
Low flow from pump

To get maximum water flow throughout the day and reduce grid power consumption, both grid and PV can be connected. During night
time drive can run pump motor on grid power.

Solar & grid power source Operation with solar power only

Early Morning Midday Evening

Max PV DC power > Motor Power

Nominal PV DC power
= Motor power
PV Array Grid power
Low PV DC power
Solar pump
drive AC Power AC Power on

AC Power off
DC Power
Pump and
pump motor Full flow from pump Flow rate
Flow rate decrease
increase
Low flow from pump

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