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A new configuration of a triport system is presented. In this system, when the ac line switches to the inverter under a failure of the ac line, transients do not appear in the output voltage. The battery for the inverter is charged by the phase control of the inverter. And so there is no battery charger in this system.
A constant current converter of resonant type is presented. It is composed of the PWM control inverter, the main resonant circuit and the integrator for the feedback. The inverter being driven at high frequency, the size of the whole device can be minimized. By making use of the PWM controller and the integrator for the feedback, the output current is regulated precisely against the change of the...
The collector current surge of the free-running transistor inverter is investigated. In this circuit, the collector current increases sharply with saturation of the core. This spike is undesirable with respect to the reliability of transistor and the efficiency. Since the generation of spike, however, brings about the commutation, we can not avoid this phenomenon. The details of its generation mechanism...
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