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Inverter Numerical

The document discusses the analysis of a full-bridge inverter and a three-phase inverter, detailing the calculations for load current, power absorbed, and average current in a DC source. It includes expressions for instantaneous line-to-line voltage and line current in a Fourier series, as well as calculations for rms voltages, total harmonic distortion (THD), and average transistor current. The parameters used include specific resistances, inductances, and input voltages.

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38 views14 pages

Inverter Numerical

The document discusses the analysis of a full-bridge inverter and a three-phase inverter, detailing the calculations for load current, power absorbed, and average current in a DC source. It includes expressions for instantaneous line-to-line voltage and line current in a Fourier series, as well as calculations for rms voltages, total harmonic distortion (THD), and average transistor current. The parameters used include specific resistances, inductances, and input voltages.

Uploaded by

an1on2ym3ou4s
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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EE308/Karthikeyan/EEE 1

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1. The full-bridge inverter shown in Fig. 1 has a switching sequence that
produces a square wave voltage across a series RL load. The switching
frequency is 60 Hz, Vdc = 100 V, R=10Ω , and L=25 mH. Determine:
a) an expression for load current,
b) the power absorbed by the load,
c) the average current in the dc source.

Solution:
EE308/Karthikeyan/EEE 7
*

4𝑉𝑆
{E1 = .5}
3.14 ∗ 2 0

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3. The three-phase inverter in Figure has a Y-connected load of R = 5 Ω and L = 23 mH. The inverter frequency is f0 = 60 Hz and the dc
input voltage is Vs = 220 V. (a) Express the instantaneous line-to-line voltage vab(t) and line current ia(t) in a Fourier series. Determine (b)
the rms line voltage VL, (c) the rms phase voltage Vp, (d) the rms line voltage VL1 at the fundamental frequency, (e) the rms phase voltage
at the fundamental frequency Vp1, (f) the THD, (g) the DF, (h) the HF and DF of the LOH, (i) the load power Po, (j) the average transistor
current IQ(av), and (k) the rms transistor current IQ(rms)

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The rms harmonic line voltage is

The LOH is the fifth

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