Solar Inverters are one of the latest and most energy saving power protection devices in the recent time.inverters may be the one piece of electrical equipment that most solar energy users do not know much about. They are very discrete, unobtrusive boxes that convert direct current (DC)

Inverter into ac, dc will lower if dc voltage transformer, through the communication, namely receive standard pressor ac voltage and frequency. For large capacity of inverter, due to the dc bus voltage is higher, ac output generally do not need to boost transformer can achieve 220V, in medium and small volume of inverter, due to the low voltage dc 12V, such as, must design, 24V pressor circuit.

In general, small volume inverter mosfet inverter circuit, there the whole bridge with high frequency inverter circuits pressor push-pull inverter circuits, and will boost the circuit transformer neutral plug up in power, two power tube is alternant, output power, because get ac power transistor DeBian altogether, drive and control circuit is simple, because of the transformer has certain leakage, can limit the short-circuit current, thus improving the reliability of the circuit. Its defect is driven low utilization, transformer perceptual load ability is poor.

The bridge has push-pull inverter circuit to overcome the shortcoming, power transistor circuits of the output pulse width adjustment, the output voltage of the RMS is changed. Because of this circuit has free-wheeling loop, even to the perceptual load, the output voltage waveform nor distortion. This circuit faults is under the arm, bridge, no power transistor must therefore be adopted by isolating circuit or special driving power. In addition, in order to prevent, bridge, and the common arms occurs before the final design must be shut, namely current must set time, the dead zone circuit structure is relatively http://complicated. Photovoltaic (pv) grid inverter circuit control circuit:These kinds of inverter circuit are needed to control circuit, general square wave and are weak wave two control mode, the output pulse inverter circuit is simple, low cost, low efficiency, harmonic components. Sine wave output is the development trend of the inverter, along with the development of microelectronics technology, PWM function of micro processor is also available, so the sinusoidal output inverter technology has matured.

1 the output pulse current inverter using PWM integrated circuit, such as SG3525 TL494, etc. Practice shows that the SG3525 integrated circuits, and adopts power mosfet as switch power components, can achieve higher performance price of inverter, because SG3525 has direct driving power mosfet ability and internal standards and operational amplifiers and the voltage protection function, thus its outer circuit is simple.2 the sinusoidal output inverter control circuits, sine wave output inverter, the control circuit can be used as INTEL microprocessor control, the company produces 80C196MC, MOTOROLA MP16 production and CROCHIP company production of MI – PIC16C73 etc, these microcontroller is more road, and PWM generator set, the bridge between the arms of the dead zone, INTEL company adopted 80C196MC realization of the output circuit, sine wave 80C196MC complete sine signals, and the test voltage output voltage, realize communication.)

Steven http://www.newsinoenergy.com

Steven http://www.newsinoenergy.com

Author Bio: Steven http://www.newsinoenergy.com

Category: Business
Keywords: Solar Power Inverter