PV fed BLDC motor driven water pump |Simulation of PV fed BLDC motor
Welcome to LMS Solution! In today's session, we will delve into the simulation model of a solar PV-based water pumping system designed for agricultural applications. This model has been developed based on a referenced paper, incorporating specifications for the BLDC motor, PV array, boost converter, and water pump design. Let's explore the key components and simulation results of this assembly model.
Solar PV Array
The simulation begins with a solar PV array generating a maximum power of approximately 2370 watts. The operating voltage is set at 238 volts with a rating of 10 PV panels.
The PV array is connected to a BLDC motor through a boost converter. The boost converter boosts the input voltage and current, and the conditions are processed to calculate a new duty cycle.
The BLDC motor has a power rating of 1.8 kilowatts, and its speed is controlled using a pulse generator. The back electromotive force (EMF), stator current, and electromagnetic torque are measured and analyzed.
Dynamic Irradiation Conditions
The simulation is conducted under two scenarios:
Constant Irradiation: Fixing the irradiation at 1000 watts per square meter.
Dynamic Irradiation: Changing the irradiation from 200 to 1000 watts per square meter and back to 200 within the simulation duration.
Constant Irradiation (1000 W/m²)
Under constant irradiation, the simulation results are as follows:
PV Power: ~2370 watts
DC Bus Voltage: ~230 volts
DC Bus Current: ~9 amps
Back EMF: ~180 volts
Stator Current: ~10 amps
Electromagnetic Torque: Consistent
The simulation results align with the expected outcomes from the referenced paper, validating the accuracy of the model.
Dynamic Irradiation (200 to 1000 W/m²)
During dynamic irradiation changes, the simulation captures the system's response:
PV Power: Varies between 400 and 2370 watts
DC Bus Voltage: Fluctuates between 222 and 238 volts
DC Bus Current: Corresponds to PV power changes
Back EMF: Adapts with irradiation variations
Stator Current: Adjusts with irradiation levels
Motor Speed: Reflects changes in irradiation, reaching maximum under higher irradiation.
The simulation demonstrates the effectiveness of the solar PV-based water pumping system under both constant and dynamic irradiation conditions. The BLDC motor efficiently adjusts its operation based on the available solar power, showcasing the viability of such systems for agricultural applications.
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