Control Strategy Schematic (compensating for harmonic current)
This article refers to the address: http://
as the picture shows. The power supply current is closed-loop controlled, and the reference current and the actual current pass through the current controller and output the inverter voltage reference value. Then, the switching signal of the inverter is obtained by using space vector modulation (SVPWM) technology, and the hybrid APF is controlled to perform harmonic compensation. The DC bus voltage control is achieved by adjusting the reactive current. The error between the DC bus voltage and the reference signal is generated by the PI controller, and then dq is inversely transformed. Finally, the voltage regulation signal is added to the current reference signal. If only the harmonic current is compensated, the phase φ(t) of the current reference can be directly obtained by sliding Fourier transform of the load current; if the harmonic and reactive current are simultaneously compensated, φ(t) can perform sliding Fourier analysis on the grid phase voltage. get.
Hybrid APF circuit diagram (compensating for harmonic current)
The hybrid APF circuit structure used as a compensation current harmonic is shown in the figure. Among them, the hybrid APF and the non-linear load (diode rectifier bridge resistor and inductive load) are connected in parallel to the grid, and a harmonic current with equal amplitude and opposite phase is generated by the switching action of the IGBT, and the harmonic current generated by the nonlinear load is generated. Offset.
- 6 Way Power Strip Extension with surge protector will protect your electrical devices from voltage spikes e.g. electrical surge or lightning. USB Ports Electric Socket 6 Outlet Extension provide you multi capability for various electronics power needs at the same time.
- Qualified Power Strip 6-Outlet Power Cord allowing you extend the outlet 6 feet (2 meters) away from the wall or even further.
- 6 Gang Power Strip is capable of overload protection, optional USB Charging Ports and surge protection, flexible design.
6 Gang Power Strip
6 Gang Power Strip, Smart Power Bar, 6 Way Power Strip Extension, Power Strip 6-Outlet, USB Ports Electric Socket 6 Outlet Extension
ZhongShan JITONGLONG Plastic Hardware Co. Ltd. , https://www.toukoo-electronics.com