Single Phase Inverter
This section describes single-phase two-level inverter
A block diagram and input parameters for the inverter-rectifier block are given in Table 1.
component | component dialog window | component parameters |
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![]() Single phase inverter |
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A schematic block diagram of the inverter switching block is given in Figure 1.
Digital inputs, when selected for Control parameter, enables the user to assign gate drive inputs to any of the digital input pins (from 1 to 32).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 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 user’s external controller design.

Internal modulator, when selected for Control parameter, enables the user to use internal PWM modulator for driving S1, S2, S3 and S4 switches instead of digital input pins. In this configuration, three additional component inputs will be present. En input is used as enable/disable and InA and InB are used as referent signal inputs for internal PWM modulator. When options for variable frequency or phase are selected, additional component inputs are created Freq, OffsetA, OffsetB respectively.
Digital input per leg, when selected for Control parameter, enables the user to assign leg drive input to any of the digital input pins (from 1 to 32).For example, if S1 is assigned to 1, the digital input pin 1 will be routed through internal dead time module, to the S1 and S2 switch gate drives.
Model, when selected for Control parameter, enables the user to set the IGBTs gate drive signals directly from signal processing model. The input pin gates appears on the component and requires a vector input of four gate drive signals in the following order: [S1, S2, S3, S4]. When controlled from the model, logic is always active high.
Switching enabled, when checked, enables using an external PWM enabling digital signal.
DTV detection, when enabled DTV detection will be signalized during simulation runtime.
Losses calculation
- Current values - Switching elements current axis [A]
- Voltage values - Switching elements voltage axis [V]
- Temp values - Switching elements temperature axis [°C]
- Vce - IGBT collector emitter saturation voltage [V] - discontinued from the 2020.3 release
- Rce - IGBT on state slope resistance [Ohm] - discontinued from the 2020.3 release
- Vd - IGBT Diode voltage drop [V] - discontinued from the 2020.3 release
- Rd - IGBT Diode slope resistance [Ohm] - discontinued from the 2020.3 release
- Vt table - Switch forward voltage drop, f(I,T) [V]
- Vd table - Diode forward voltage drop, f(I,T) [V]
- Et on table - Switch switching ON losses, output energy, f(I, V, T) [J]
- Et off table - Switch switching OFF losses, output energy, f(I, V, T) [J]
- Ed off table - Diode switching OFF losses, output energy, f(I, V, T) [J]
Temperatures calculation
- Thermal networks type - Defines type of internal thermal network
- Rth switch - List of thermal resistance for the IGBT switch
- Tth switch / Cth switch - List of thermal time constants or thermal capacitances for the IGBT switch
- Rth diode - List of thermal resistance for diode
- Tth diode / Cth diode - List of thermal time constants or thermal capacitances for diode
- Caculations execution rate - Execution rate in [s] for the losses and temperatures calculation logic
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.