The objective of any performance index is to evaluate quantitatively and qualitatively the operation of an equipment and allow comparisons to be made between various configurations. The most used indices for acAC/dc DC rectifiers and dcDC/ac AC inverters are presented in Table 1.
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Performance Index | Expression |
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line-line rms output voltage [Vrms] | | Mathinline |
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| body | --uriencoded--V_%7BL(\text%7Brms%7D)%7D = \sqrt%7B\frac%7B2%7D%7B3%7D%7D V_d |
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fundamental rms output voltage [Vrms] | | Mathinline |
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| body | --uriencoded--V_%7BL1(\text%7Brms%7D)%7D = \frac%7B\sqrt%7B6%7D%7D%7B\pi%7D V_d |
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rms line-line voltage harmonic spectrum | | Mathinline |
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| body | --uriencoded--V_%7BLh%7D = \frac%7B0.78%7D%7Bh%7D V_d, \; h \text%7B odd integer%7D \geq 5 |
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amplitude modulation ratio | | Mathinline |
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| body | --uriencoded--m_a = \frac%7B\tilde%7BV%7D_%7B\text%7Bcontrol%7D%7D%7D%7B\tilde%7BV%7D_%7B\text%7Btri%7D%7D%7D |
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frequency modulation index | | Mathinline |
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| body | --uriencoded--m_f = \frac%7Bf_s%7D%7Bf_1%7D |
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phase current harmonics | | Mathinline |
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| body | --uriencoded--I_h = \frac%7BV_%7BLLh%7D%7D%7B\sqrt%7B3%7D h X_L%7D |
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avg. dc DC bus current [A] | | Mathinline |
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| body | --uriencoded--I_d = \frac%7BP%7D%7BV_d%7D |
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line current [A] | | Mathinline |
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| body | --uriencoded--I_L = \frac%7BP%7D%7B\sqrt%7B3%7D V_L%7D |
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