XMPQ uses an external transformer CT to detect grid current or load current in real time. The controller extracts the fundamental current and various harmonic currents of the load through fast Fourier transform, and obtains active, reactive, and negative sequence data through DQ rotation coordinates. Then, through an IGBT power converter, it generates compensation current of equal magnitude and opposite phase to the compensation target (harmonic, reactive, unbalanced) and injects it into the grid to improve the power quality on the grid side.

3、 Size

2. Extremely strong anti pollution ability
All conductive components, except for the fan, are isolated from the outside world and suitable for harsh environments with severe dust, salt, and humidity. The schematic diagram of the internal structure of the module is as follows:

3. Minimalist on-site installation
Users can choose to use busbar wiring above or cable wiring below, and can select the load side or grid side as the external current CT sampling point.

4. Unlimited combinations
APF, SVG, and C modules of different specifications can be freely combined to achieve rich functionality. APF/SVG can also be used in conjunction with third-party capacitor compensation, such as 150A APF+50A APF+50kvar SVG+100kvar C. Moreover, regardless of the form of third-party capacitor compensation or passive filtering, XMPQ can achieve resonance free operation, ensuring the safe and reliable operation of the entire power grid system.
The principles of matching and the functions implemented can be found in Section IV for a more economical compensation plan.

5. Extremely high power density
The XPQM series AP F/SVG with modular design can adapt to cabinets of 600 width, 600 depth, 600 width * 600 depth, and various larger sizes. The overall power of the machine can reach 900A/600kvar, while the mainstream industry indicators are<600A/400kvar. Higher power density can save users space and reduce costs.
For SVG, the rated output power is calculated based on fully compensating reactive power. It can also compensate for single-phase load current at full power to maintain the balance of three-phase current on the grid side. It can also compensate for low order harmonics up to 13 times with up to half of the power, and use the remaining power for reactive power compensation. The total output power is:

6. Extremely low loss
Thanks to a deep understanding of power electronics high-speed switching devices, the XMPQ series APF/SVG has an active power loss of<2.5% during full load operation, while the industry's mainstream indicators are<3% to 4%. Active power loss is crucial for industries such as State Grid that use SVG on a large scale!

7. Extremely quiet noise
The XMPQ series APF/SVG uses high-quality soft magnetic reactors and scientific air duct design. The full load working noise of the whole machine does not exceed 60dB, while the mainstream industry indicator is<70dB. Silence is crucial for users to obtain a good product experience!

8. Extremely high current loop bandwidth
XMPQ achieves quasi natural sampling and continuous control, with an equivalent switching frequency of 80kHz and a current loop width of 4kHz. Its interference suppression speed is more than four times that of other products in the same industry, and the mainstream industry indicators are 20kHz/1kHz. If the device has a higher current loop bandwidth, the protection will be more timely, and it can still maintain stable operation in extremely harsh situations, achieving the effect of parallel connection with pure capacitors without resonance.

5、 Performance indicators