1 Mask and Parameters
2 Inputs, Outputs, and Signals Available for Monitoring
- 2.1 Inputs
- 2.2 Outputs
3 Intellectual Property Disclaimer

The Signal Conditioning block converts the voltage and current signals, measured at different measurement locations, into their respective per-unit values and transforms them into d-q coordinates. For d-q transformation, Cosine based Park transformation method has been used. This means, that at the beginning (t=0), the d-axis of the rotating frame is aligned with the phase A axis. In addition, the blocks do DC voltage measurement filtering and convert it into its per-unit value.

Mask and Parameters

The following information is required by the configuration mask of the Signal Conditioning block:

Parameter	Description	Units
Nominal Operating Voltage	The nominal line-to-line RMS voltage of the grid-forming converter	V
Nominal Power	Nominal Capacity of the grid-forming converter	VA
Nominal Frequency	Nominal frequency of the grid-forming converter	Hz
Nominal DC voltage	The nominal value of the inverter’s input DC voltage	V
DC Link Voltage Measurement Filter Cut-off Frequency	Cut-off frequency of the DC voltage measurement Low Pass Filter	rad/s

Inputs, Outputs, and Signals Available for Monitoring

Inputs

Parameter	Description	Units
Iinv	Current measured at the inverter side filtering inductor	A
Io	Output Current, measured at the output of the filter	A
Vo	Per Phase Output voltage, measured across the Filtering Capacitor	V
Vdc	Measured DC Voltage	V
wt	Angle variation with time, synchronized on zero crossings of the fundamental (positive sequence) of phase A	rad

Outputs

Parameter	Description	Units
Frequency_pu	Frequency of the Inverter Output Voltage	pu
Vo_RMS	RMS value of the output voltage	V
Vo_dq_pu	Direct and Quadrature axis voltage at the output	pu
Io_pu	Output Current, measured at the output of the filter	pu
Io_dq_pu	Direct and Quadrature axis current at the output	pu
Iinv_pu	Current measured at the inverter side filtering inductor	pu
Iinv_dq_pu	Direct and Quadrature axis current at the inverter side inductor of the filter	pu
Vdc_pu	Measured DC Voltage	pu

Intellectual Property Disclaimer

Natural Resources Canada owns all intellectual property rights in the Smart Inverter Modelling Toolbox software and related products.

HYPERSIM Documentation

GFM Signal Conditioning Three-Phase

Mask and Parameters

Inputs, Outputs, and Signals Available for Monitoring

Inputs

Outputs

Intellectual Property Disclaimer