Switched Capacitor Based 13L Inverter

Description of the Switched Capacitor Based 13L Inverter component in the Schematic Editor Library.

A block diagram and input parameters for the Switched Capacitor Based 13L Inverter switching block are given in Table 1.

Table 1. The Switched Capacitor Based 13L Inverter component in the HIL Toolbox
component component dialog window component parameters
  • Property tabs
    • General
Weight = 3

The Switched Capacitor Based 13L Inverter component models a switched capacitor based 13-level inverter topology, proposed in [1]. The schematic diagram of component's internals with corresponding naming of the switches is shown in Figure 1.

Figure 1. The schematic diagram of the Switched Capacitor Based 13L Inverter component
A fully functional inverter, including the components that should be added externally, is shown in Figure 2 [1].
Figure 2. The schematic diagram of the functional switched capacitor based 13L inverter

Control options

Selecting Digital inputs as the Control parameter enables assigning gate drive inputs to any of the digital input pins (from 1 to 32(64)). For example, if Sl is assigned to 1, the digital input pin 1 will be routed to the Sl switch gate drive. In addition, the gate_logic parameter selects either active high (High-level input voltage VIH turns on the switch), or active low (Low-level input voltage VIL turns on the switch) gate drive logic, depending on the external controller design.

Selecting Model, as the Control parameter, enables setting the IGBTs' gate drive signals directly from the signal processing model. The input pin gates appears on the component and requires a vector input of 12 gate drive signals for the switches. When controlled from the model, logic is always active high.

Component dialogue box and parameters

The Switched Capacitor Based 13L Inverter component dialogue box consists of one tab that contains switch control related properties.

Digital Alias

If a converter is controlled by digital inputs, an alias for every digital input used by the converter will be created. Digital input aliases will be available under the Digital inputs list alongside existing Digital input signals. The alias will be shown as Converter_name.Switch_name, where Converter_name is name of the converter component and Switch_name is name of the controllable switch in the converter.

References

  1. D. Almakhles, M. J. Sathik, S. Sivakumar, M. S. Bhasker and N. Sandeep, "Switched Capacitor Based 13L Inverter Topology for High-Frequency AC Power Distribution System", IEEE Journal of Emerging and Selected Topics in Power Electronics, doi: 10.1109/JESTPE.2020.3043488.