VT130G2-U-4055 TOSHIBA 晶体管换流器

VT130G2-U-4055 inverter consists of thyristors. There are three kinds of commutation methods: load resonant commutation, forced commutation and commutation with turnoff thyristors or high-power transistors:
(1) Load resonant commutation: it uses the oscillation characteristics formed by the capacitance and inductance in the load circuit to commutate. In this kind of load circuit, the current has the characteristic of automatic zero crossing. As long as the time when the load current exceeds the voltage is longer than the turn-off time of the thyristor, the thyristor of the inverter can be cut off during VT130G2-U-4055, and the forward blocking characteristic can be restored.
(2) Forced commutation: separate the converter circuit from the load. During commutation, the auxiliary thyristor is turned on, which causes the converter circuit to generate a pulse, forcing the thyristor that was turned on to turn off due to current interruption, and bearing back pressure for a period of time to restore its forward blocking property. This kind of commutation is also called pulse commutation.
(3) Switching thyristor or high-power transistor for commutation: it can save additional commutation links, improve the economic index of equipment, improve work efficiency and reduce the volume of equipment.
VT130G2-U-4055 inverter converts direct current (battery, accumulator) into alternating current (generally 220V,50Hz sine wave). It consists of inverter bridge, control logic and filter circuit. Widely used in air conditioners, home theaters, electric grinding wheels, electric tools, sewing machines, DVDs, VCDs, computers, televisions, washing machines, range hoods, refrigerators, video recorders, massagers, fans, lighting, etc.