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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
Sample Time	Input sampling period	sec

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	Frequency of the Inverter Output Voltage	pu
Vo (RMS)	RMS value of the output voltage	V
Vo (pu)	Per Phase Output voltage, measured across the Filtering Capacitor	pu
Vodq	Direct and Quadrature axis voltage at the output	pu
Io	Output Current, measured at the output of the filter	pu
Iodq	Direct and Quadrature axis current at the output	pu
Iinv	Current measured at the inverter side filtering inductor	Pu
Iinv_dq	Direct and Quadrature axis current at the inverter side inductor of the filter	pu
Vdc	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.

ARTEMiS User Documentation

Signal Conditioning Three Phase