matlab simulation of current source inverter
#1

Hi am Nishant i would like to get details on matlab simulation of current source inverter.
I am currently doing a project on Current Source Inverter , so it would be great if can get help on this topic 
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#2

The current source converter converts the input direct current into an alternating current. In this converter, input current remains constant  but this input current is adjustable. The current source inverter is also called the current supply inverter. The output voltage of the inverter is independent of the load. The magnitude and nature of the load current depends on the nature of the load impedance.


Control of current source inverter

A thyristor current source inverter is shown in the following figure. The diodes D1-D6 and the capacitor C1-C6 provide switching of the thyristor T1-T6, which are triggered with a phase difference of 60 ° in the sequence of their number. It also shows the nature of the output current waveform. The inverter acts as a current source due to the large inductance LD in the DC link. The fundamental component of the motor phase current is shown in the following figure.

[Image: current-source-inverter-fed-induction-motor-drive.jpg]

The torque is controlled by varying the DC link current Id by changing the value of Vd. When the supply is from AC, a controlled rectifier is connected between the supply and the inverter. When the supply is, DC a switch is interposed between the supply and the inverter.

[Image: current-source-inverter-of-oinduction-motor-drive.jpg]

Current-source-inverter-of-induction-motor-drive The main advantage of the current source inverter is its reliability. In the case of the current source inverter there is no switching fault on the same leg due to the presence of a large inductance Ld.

In an induction motor, the rise and fall of the current are very fast. This increase and fall in current provide large motor spikes. Therefore, a low leakage inductance motor is used. The C1-C6 switching capacitance reduces voltage peaks by reducing the rate of current rise and fall. A large capacitance value is required to sufficiently reduce voltage peaks.
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