3 results about "Zero current switching" patented technology

The application relates to the technical field of power control, in particular to a filter and leakage inductance collaborative design method of a single-stage bidirectional high-frequency isolation inverter, which comprises the following steps: obtaining basic design parameters and constructing an inverter modulation model according to a modulation strategy, and solving the model to obtain a modulation signal expression; deducing zero-current switching current constraint conditions and zero-voltage switching current constraint conditions of a switching tube based on the modulation strategy; combining the constraint conditions with the inverter modulation model to solve and obtain soft switching constraint conditions; determining a collaborative value range of an inverter side inductance of a filter and transformer leakage inductance which meets the soft switching requirement according to the soft switching constraint conditions and a value range of the modulation signal expression; selecting design parameters of the inverter side inductance of the filter and the transformer leakage inductance, and determining the rest circuit parameters of the filter according to reactive power demand and grid-connected harmonic standards. The application can effectively inhibit the problems of soft switching failure, increased loss and electromagnetic interference caused by parameter mismatch.