Dual three-phase two-power inverter

Advanced double-sided cold plate and highly-integrated DC Link capacitor reduce component count and increase power density. The three-phase dual inverter has greater than 4x the power density of comparable Si based designs and greater than 98% efficiency. This design features: Specifications

Dual-phase-inverter measured input and output powers: (a) measured single-phase output power; (b) measured output power delivered to the three-phase loads; (c) measured input power. Table 1. Operational switching state and output voltage generation in the unit inverter leg. Table 2. Sector-dependent currents. Table 3. Prototype specifications.

These models were in conformity with the configuration, operational principles, and control scheme of the dual-phase inverter outlined in Section 2 and Section 3. The DC-link voltage value was 400 V, and the splitting capacitor banks' capacitance values were 1000 µF each.

Two phase systems were involved in the dual-output power conversion: single- and three-phase. Both phase systems had a common three-level F-type inverter leg that resulted in a reduced component-count for the entire inverter system.

Dual Three-Phase (DTP) winding configurations are gaining importance in automotive powertrains, where the DC-Link capacitor plays a critical role in terms of power density and reliability, as it accounts for approximately 40% of the inverter's volume and about 30% of its failures.

The dual-phase inverter's operational points mp and mm (depicted in Figure 3 c) were experimentally demonstrated at a common frequency of 50 Hz for point mp and at 75 and 100 Hz for point mm. The output voltage and current waveforms are shown in Figure 9 b,c. The corresponding capacitor banks' voltage variations are shown in Figure 9 d.