Hysteresis loop and carrier hybrid modulation method for voltage inverter
A technology of voltage-type inverter and hybrid modulation, which is applied in the direction of electrical components, output power conversion devices, and conversion of AC power input to DC power output, etc. question
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[0033] The topology of the three-phase voltage source inverter is as follows: figure 1 As shown, according to the basic circuit theory, the following system equations can be obtained:
[0034]
[0035] Σ x = a , b , c i x = 0 - - - ( 2 )
[0036] In formula (1), point o is the midpoint of the intermediate DC voltage of the three-phase inverter; u xo is the voltage from the AC terminal of the inverter to point o, and u xo Only two values: u xo =±0.5u dc , u dc is the intermediate DC voltage, e xN is the counter electromotive force, i x It is a three-phase alternating current, where x∈{a, b, c}. The above equations are of universal significance. Depending on the type of back electromotive force, they can represent mo...
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