Problem # 1: Three-Phase Six-Step DC-AC Inverter (1a) A three-phase inverter has an input DC voltage of 600 V. Draw up a table of the different possible switching modes. [1b] For the switching modes in [1a] above determine line –line voltages Vab if the load is balanced. [1c] A three-phase inverter with a DC input of 600 Volts is operating in the six-step, 180 degree conduction mode to generate a three-phase voltage set with a fundamental frequency of 60 Hz across a three-phase unbalanced resistive load. The load impedances are Ra = 8 Ohms, Rb = 15 Ohms and Rc = 25 Ohms. Do calculations for all the six modes of operation and then [1d] Plot the phase ‘b’ to neutral voltage of the load for a period [1e] Plot the phase ‘a’ line current for a period [1f] Plot the input DC current and find the average input current
Problem # 1: Three-Phase Six-Step DC-AC Inverter
(1a) A three-phase inverter has an input DC voltage of 600 V. Draw up a table of the different possible switching modes.
[1b] For the switching modes in [1a] above determine line –line voltages Vab if the load is balanced.
[1c] A three-phase inverter with a DC input of 600 Volts is operating in the six-step, 180 degree conduction mode to generate a three-phase voltage set with a fundamental frequency of 60 Hz across a three-phase unbalanced resistive load. The load impedances are Ra = 8 Ohms, Rb = 15 Ohms and Rc = 25 Ohms.
Do calculations for all the six modes of operation and then
[1d] Plot the phase ‘b’ to neutral voltage of the load for a period
[1e] Plot the phase ‘a’ line current for a period
[1f] Plot the input DC current and find the average input current
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