Solved Example
A step- up chopper has an input voltage of 240V and an output voltage of 680V . What is the pulse width of the output voltage if the non-conducting time of the thyristor is 100 microseconds.
Given input voltage Vs = 240V
output voltage V0 = 680V
The output voltage of a step-up chopper is V0 = Vs/(1 – D)
680 = 240/(1 – D)
D =0.64
The duty cycle (D) is :
D = TON/(TON + TOFF )
0.64 = TON/(TON + 100)
TON = 177.7
Step Up Chopper
Choppers are widely employed in applications like battery charging, voltage regulation in power systems, motor drives, and renewable energy systems. Additionally, choppers can be integrated with filters, such as low-pass filters to reduce voltage ripples and harmonics in the output waveform, ensuring a stable and clean power supply. This feature is particularly important in sensitive electronic devices and applications where a constant and high-quality power source is essential for optimal performance. Overall, choppers play a crucial role in modern power electronics, enabling efficient and controlled power conversion in diverse electrical systems.
Table of Content
- Chopper
- Step-Up Chopper
- Construction
- Working Principle
- Step-Up Chopper With Low Pass Filter
- Advantages
- Disadvantages
- Applications
- Solved Example