A sensorless control scheme for IPMSM with high-frequency quadrature square-wave voltage injection in stationary reference frame

principle

提出了一种基于高频正交方波电压注入固定参考系(SRF)的内置永磁同步电机(IPMSM)无传感器控制
方案。该方法是对传统高频旋转正弦电压注入SRF的改进。首先，利用高频电流的离散序列建立整
个信号过程。然后，提出了一种不含低通滤波器的位置估计方法，减小了高通滤波器引起的相移。

Injection voltage:

simulation

Speed ​​ring:

Current loop:

Motor parameters:

Jr = 0.052;
b = 0.005; 
Ts = 1.0e-6;
ts = 0.0001;
Rs = 2.75;
Ld = 48e-4;
Lq = 59e-4;
p = 3;
flux = 0.2;
a = -29;
kp = 3*Jr*a^2/p;
ki = -Jr*a^3/p;
kd = -3*a;

wh = 2500*2*pi;
Vh = 100;
f_sw = 2500; % 方波频率

HPF：

Observer:

normalization inside:

demodulation inside:

PLL and Luenberger observer inside:


cross_saturation_compensation inside:

The mods inside:

waveform

Speed ​​waveform:

Angle waveform:

Angle error:

Torque waveform:

Summarize

参考文献：
Sensorless Control Scheme of IPMSMs Using HF Orthogonal Square-Wave Voltage Injection Into Stationary Reference Frame

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