1. Heric change topology 1 Figure 1 shows a non-isolated topology based on the Heric structure. This topology moves a freewheeling switch in the Heric topology to a group of bridge arms. Using the unipolar SPWM strategy shown in Figure 2, in the power transmission stage, current flows through S3-S2 (positive direction) and S1-S5-S4 (negative direction); In […]
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1. H5 change topology 1 Figure 1 is a circuit structure of a six-switch non-isolated inverter, using the unipolar SPWM strategy shown in Figure 2. This topology adds a switch tube based on the H5 topology. In the power transmission phase, current flows through S5-S1-S4 (positive direction) and S6-S2 (negative direction); in the freewheeling phase, the current flows […]
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1. H5 topology Figure 1 is SMA SoLdr’s patented topology-H5 topology [8], this topology has a switch S5 in series in the main loop of the full bridge circuit. The H5 topology uses unipolar SPWM modulation, and its driving logic diagram is shown in Figure 2. In the power transmission phase, current flows through S5-S1-S4 (positive direction) and […]
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