Current source inverter reverse voltage

What are voltage-source and current-source inverters?

Voltage-source and current-source inverters are depicted in Fig. 3, where V VS (s) and I VS (s) in Fig. 3 (a) represent voltage and current of the voltage source; while V CS (s) and I CS (s) in Fig. 3 (b) stand for voltage and current of the current source, respectively.

What is a frequency converter with a voltage source inverter?

The frequency converter with voltage source inverter will impose a voltage on the motor. Depending on the load the motor current will regulate itself. With an inverter of the current source type a constant current is imposed on the motor. Fig. 20-89 shows the switching matrix with associated switch currents and line currents.

What is a current source inverter?

Current-source inverters, in which a large choke in the d.c. input forces an almost constant d.c. input current and hence square wave a.c. output currents, find use in very high power drives, for which the ratings of available ‘turn-off’ devices, such as bipolar transistors and GTOs, would be inadequate.

Does a pulse width modulated current source inverter need a gate turn off switch?

Pulse width modulated current source inverters typically require gate turn off devices with reverse voltage blocking capability which have limited their application. In this paper, a new pulse width modulated current source inverter topology using one gate turn off switch and six SCRs is presented.