ANPC Flying Capacitor Inverter 7 Level Leg

Schematic Block Diagram

A schematic block diagram of the ANPC Flying Capacitor Inverter 7 Level Leg with corresponding switch naming is shown in Figure 2.

Weight of the ANPC Flying Capacitor Inverter 7 Level Leg for real-time/VHIL simulation is 2.

Figure 2. Schematic block diagram of the ANPC Flying Capacitor Inverter 7 Level Leg with corresponding switch naming

Control

Digital inputs, when selected as the Control parameter, enables you to assign gate drive inputs to any of the digital input pins (from 1 to 32(64)). For example, if S1 is assigned to 1, the digital input pin 1 will be routed to the S1 switch gate drive. In addition, the S1_logic parameter is set to either active high (i.e. high-level input voltage VIH which turns on the switch), or active low (i.e. low-level input voltage VIL which turns on the switch). The gate drive logic depends on your external controller design. In TyphoonSim, digital signals are read from the internal virtual IO bus. Hence, if some signal is sent to digital ouput 1, it will appear on digital input 1.

Model, when selected as the Control parameter enables you to set the IGBT's gate drive signal directly from the signal processing model. The input pin gates appears on the component and requires a vector input of ten gate drive signals in the following order: [S1, S2, S3, S4, S5, S6, S7, S8, S9, S10]. When controlled from the model, the logic is always set to active high.

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.

Ports

DC+ (electrical)
- DC side + port

DCn (electrical)
- DC side neutral port

DC- (electrical)
- DC side - port

C1 (electrical)
- Flying capacitor C1 port

C2 (electrical)
- Flying capacitor C2 port

C3 (electrical)
- Flying capacitor C3 port

C4 (electrical)
- Flying capacitor C4 port

A (electrical)
- AC side port

s_ctrl (in)
- Available if model control is selected
- Vector of 10 input gate signals for switches

Control (Tab)

Control
- Specifies how switches are controled. It is possible to choose between: Digital inputs and Model
- More details about each type of control can be found in the Control section

If Digital inputs is selected as Control, the following properties can be used:
- Gate control enabling
  - If enabled, gives a possibility to control if changes in the gate control signal are applied or not
- Sen
  - Available if Gate control enabling is enabled
  - Digital input that enables/disables switching
- Sen_logic
  - Available if Gate control enabling is enabled
  - Logic that will be applied to Sen signal

If Model is selected as Control, the following properties can be used:
- Execution rate
  - Defines the period between two updates of gate signals for the component. Gate signals are provided as a signal processing input to component

Input Stage (Tab)

If Digital inputs is selected as Control in the Control tab, the following properties can be used:
- S1
  - Digital input that is used to control S1 switch
- S1_logic
  - Logic that will be applied to control signal for S1
  - Active high or active low
- S2
  - Digital input that is used to control S2 switch
- S2_logic
  - Logic that will be applied to control signal for S2
  - Active high or active low
- S3
  - Digital input that is used to control S3 switch
- S3_logic
  - Logic that will be applied to control signal for S3
  - Active high or active low
- S4
  - Digital input that is used to control S4 switch
- S4_logic
  - Logic that will be applied to control signal for S4
  - Active high or active low

Flying Cap Stage (Tab)

If Digital inputs is selected as Control in Control tab, the following properties can be used:
- S5
  - Digital input that is used to control S5 switch
- S5_logic
  - Logic that will be applied to control signal for S5
  - Active high or active low
- S6
  - Digital input that is used to control S6 switch
- S6_logic
  - Logic that will be applied to control signal for S6
  - Active high or active low
- S7
  - Digital input that is used to control S7 switch
- S7_logic
  - Logic that will be applied to control signal for S7
  - Active high or active low
- S8
  - Digital input that is used to control S8 switch
- S8_logic
  - Logic that will be applied to control signal for S8
  - Active high or active low
- S9
  - Digital input that is used to control S9 switch
- S9_logic
  - Logic that will be applied to control signal for S9
  - Active high or active low
- S10
  - Digital input that is used to control S10 switch
- S10_logic
  - Logic that will be applied to control signal for S10
  - Active high or active low

Extras (Tab)

The Extras tab gives you the opportunity to set Signal Access Management for the component.

Signal visibility is calculated based on the 'signal_access' property and whether or not a parent component in its hierarchy is locked or not. Components that are not contained within locked components expose their signals regardless of the 'signal_access' property. The 'signal_access' property can have one of three values:

Public - Components marked as public expose their signals on all levels.
Protected - Components marked as protected will hide their signals to components outside of their first locked parent component.
Inherit - Components marked as inherit will take the nearest parent 'signal_access' property value that is set to a value other than inherit.