A Single-Phase Switching Diode Cascade Multistandard Inverter Based on H-Bridge

Cascaded multistandard inverter is needed in traditional high-voltage occasions, but a large number of electricitys switching devices in cascaded topology make its control complex and can lead to reduced efficiency and increased cost of inverter operation. In my text, a new basic switching diode topology proposed. It contains three switching devices, three electricity diode elements, and three DC voltage source devices with a voltage ratio of 1:1:2. In the way, five correct voltage standards can be output can be generated. Based on the combination of H-bridge topology, a new cascade topology is proposed. They increase the number of voltage standards and can work in asymmetric DC electricity supply. Therefore, different DC voltage source amplitudes can be provided, thereby reducing the number of electrical and electronic components. Compared with other most advanced cascaded topologies, The main advantage of the proposed cascade topology is the reduction where the number of electricity switche, is determined by a reasonable number of DC voltage source and the reduction in cost. At the same time, the rationality and working principle of the proposed topology are discussed, and the corresponding carrier cascade modulation method is proposed. By comparing the export voltage wave with the target waveform, the driving signal of the switch is obtained from the PWM pulse signal. The correctness and feasibility of the topology are verified by matlab2018 / Simulink simulation.