SPLL_3PH_DDSRF Struct Reference

Detailed Description

Defines the SPLL_3PH_DDSRF structure.

This software module implements a software phase lock loop based on decoupled double synchronous reference frame for grid connection to three phase grid

Data Fields
float32_t	d_p_decoupl
	Positive Rotating reference Frame D-axis value. More...
float32_t	d_n_decoupl
	Negative Rotating reference Frame D-axis value. More...
float32_t	q_p_decoupl
	Positive Rotating reference Frame Q-axis value. More...
float32_t	q_n_decoupl
	Negative Rotating reference Frame Q-axis value. More...
float32_t	cos_2theta
	Cos of twice the grid frequency angle. More...
float32_t	sin_2theta
	Sin of twice the grid frequency angle. More...
float32_t	y [2]
	Used to store history for filtering the decoupled D and Q axis components More...
float32_t	x [2]
	Used to store history for filtering the decoupled D and Q axis components. More...
float32_t	w [2]
	Used to store history for filtering the decoupled D and Q axis components. More...
float32_t	z [2]
	Used to store history for filtering the decoupled D and Q axis components. More...
float32_t	k1
	Lpf coefficient. More...
float32_t	k2
	Lpf coefficient More...
float32_t	d_p_decoupl_lpf
	Decoupled positive sequence D-axis component filtered. More...
float32_t	d_n_decoupl_lpf
	Decoupled negative sequence D-axis component filtered. More...
float32_t	q_p_decoupl_lpf
	Decoupled positive sequence Q-axis component filtered. More...
float32_t	q_n_decoupl_lpf
	Decoupled negative sequence Q-axis component filtered. More...
float32_t	v_q [2]
float32_t	theta [2]
	Grid phase angle. More...
float32_t	ylf [2]
	Internal Data Buffer for Loop Filter output. More...
float32_t	fo
	Instantaneous Grid Frequency in Hz. More...
float32_t	fn
	Nominal Grid Frequency in Hz. More...
float32_t	delta_t
	1/Frequency of calling the PLL routine More...
SPLL_3PH_DDSRF_LPF_COEFF	lpf_coeff

Field Documentation

d_p_decoupl

float32_t SPLL_3PH_DDSRF::d_p_decoupl

Positive Rotating reference Frame D-axis value.

d_n_decoupl

float32_t SPLL_3PH_DDSRF::d_n_decoupl

Negative Rotating reference Frame D-axis value.

q_p_decoupl

float32_t SPLL_3PH_DDSRF::q_p_decoupl

Positive Rotating reference Frame Q-axis value.

q_n_decoupl

float32_t SPLL_3PH_DDSRF::q_n_decoupl

Negative Rotating reference Frame Q-axis value.

cos_2theta

float32_t SPLL_3PH_DDSRF::cos_2theta

Cos of twice the grid frequency angle.

sin_2theta

float32_t SPLL_3PH_DDSRF::sin_2theta

Sin of twice the grid frequency angle.

y

float32_t SPLL_3PH_DDSRF::y[2]

Used to store history for filtering the decoupled D and Q axis components

x

float32_t SPLL_3PH_DDSRF::x[2]

Used to store history for filtering the decoupled D and Q axis components.

w

float32_t SPLL_3PH_DDSRF::w[2]

Used to store history for filtering the decoupled D and Q axis components.

z

float32_t SPLL_3PH_DDSRF::z[2]

Used to store history for filtering the decoupled D and Q axis components.

k1

float32_t SPLL_3PH_DDSRF::k1

Lpf coefficient.

k2

float32_t SPLL_3PH_DDSRF::k2

Lpf coefficient

d_p_decoupl_lpf

float32_t SPLL_3PH_DDSRF::d_p_decoupl_lpf

Decoupled positive sequence D-axis component filtered.

d_n_decoupl_lpf

float32_t SPLL_3PH_DDSRF::d_n_decoupl_lpf

Decoupled negative sequence D-axis component filtered.

q_p_decoupl_lpf

float32_t SPLL_3PH_DDSRF::q_p_decoupl_lpf

Decoupled positive sequence Q-axis component filtered.

q_n_decoupl_lpf

float32_t SPLL_3PH_DDSRF::q_n_decoupl_lpf

Decoupled negative sequence Q-axis component filtered.

v_q

float32_t SPLL_3PH_DDSRF::v_q[2]

theta

float32_t SPLL_3PH_DDSRF::theta[2]

Grid phase angle.

ylf

float32_t SPLL_3PH_DDSRF::ylf[2]

Internal Data Buffer for Loop Filter output.

fo

float32_t SPLL_3PH_DDSRF::fo

Instantaneous Grid Frequency in Hz.

fn

float32_t SPLL_3PH_DDSRF::fn

Nominal Grid Frequency in Hz.

delta_t

float32_t SPLL_3PH_DDSRF::delta_t

1/Frequency of calling the PLL routine

lpf_coeff

SPLL_3PH_DDSRF_LPF_COEFF SPLL_3PH_DDSRF::lpf_coeff