Question

In Harmonic Analyzer window, record the level of harmonics of output voltage \( (3 f, 5 f, 7 f, 9 f) \) and Distortion parameter (THD) in first row of TABLE.

parameter 3f 5f 7f 9f THD
output voltage (180 modulation) 0.4 19.8 15.1 0.2 33.3
output voltage (PWM modulation- 77 24.1 22 21.9 100
switching frequency 1000Hz)
output voltage (PWM modulation- 114.9 12.2 15.8 16.9 100
switching frequency 2000Hz)
output voltage (PWM modulation- 80 9.2 25.6 16.6 100
switching frequency 5000Hz)
output voltage (PWM modulation 63.1 14.5 14.7 18.2 100
with filtering switching
frequency 5000Hz)

According to the data recorded in above compare the results of harmonics, what is the impact of 180 modulation and PWM modulation on the harmonics and distortion?

Answer 1

The Harmonic Analyzer window records the levels of harmonics and the distortion parameter of the output voltage. By comparing different modulation techniques and switching frequencies, we can observe the impact on harmonics and distortion.

Step-by-step explanation:

In the Harmonic Analyzer window, the levels of harmonics of the output voltage and the distortion parameter (THD) are recorded in the first row of the table. The harmonics are represented by the frequencies 3f, 5f, 7f, and 9f. The THD values represent the amount of distortion in the output voltage caused by these harmonics.

By comparing the results of harmonics for different modulation techniques (180 modulation and PWM modulation) at varying switching frequencies, we can observe their impact on harmonics and distortion. The data recorded in the table shows the levels of harmonics and THD for different modulation techniques and switching frequencies, allowing us to analyze their effects.