Tag Archives: Time domain analysis

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DC side control technology of photovoltaic grid-connected inverter,
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Time domain analysis of capacitor voltage self-balance mechanism Part 2

This article analyzes the characteristics of the current ix(t) and its average value Ix(avg) from the midpoint of the capacitor arm when Vd=0 and Vd≠0. (1) Vd=0 Vd=0 means that the capacitor voltage is balanced. At this time, iinv(t) is denoted as iinv_b(t), and its expression is: Among them, φZmn is the impedance angle of Zeq, and […]

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admin
DC side control technology of photovoltaic grid-connected inverter,
 0

Time domain analysis of capacitor voltage self-balance mechanism Part 1

The self-balancing characteristics of the half-bridge inverter can also be analyzed in the time domain. First, analyze the time constant τ of the capacitor voltage stability in the time domain, so as to qualitatively understand the self-balancing characteristics of the capacitor voltage; then, according to the two-variable Fourier decomposition, the factors of the capacitor voltage […]

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