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Inverter Working Principle

Posted by: Taufiqullah August 29, 2024 1,587 Views

Inverter working principle is generally the same as the power supply that supplies DC current to AC and also works to convert dc voltage into ac current. You need a car battery / DC Direct Current to be converted into AC / Alternating Current. The durability of an inverter circuit is determined not from watts but from the battery / battery you use and load.
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The working principle of the inverter can be explained by using 4 switches as shown above. When the S1 and S2 switches are on, they will flow the DC current flow to the R load from left to right, if the live S3 and S4 switches will flow the DC current flow to the R load from the right to the left. Inverters typically use pulse width modulation (PWM) circuits in the conversion process of DC voltage to AC voltage.

A. Inverter Half Wave
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The working principle of a single phase inverter can be explained by the picture above. When the transistor Q1 is alive for time T0 / 2, the voltage at load V0 is Vs / 2. If the transistor Q2 only lives for T0 / 2, Vs / 2 will pass through the load. Q1 and Q2 are designed to work interchangeably. In the figure above the juag shows the waveform for the output voltage and the transistor current with resistive load. This type of inverter requires two DC sources (symmetrical DC voltage source), and when the transistor off the reverse voltage on Vs becomes Vs / 2, ie:
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B. Full Wave Inverter
The basic circuit of full wave inverter and output waveform with resistive load. When the transistors Q1 and Q2 work (ON), the voltage Vs will flow into the load but Q3 and Q4 do not work (OFF). Furthermore, transistors Q3 and Q4 work (ON) while Q1 and Q2 do not work (OFF), then on the load will arise voltage -Vs. Things to consider in choosing a DC inverter to AC include:

  1. Load capacity to be supplied by inverter in Watt, try to choose the inverter whose work load is close to the load we want to use for maximum working efficiency.
  2. Input voltage source input to be used, DC input 12 Volt or 24 Volt.
  3. Inverter waveform output waveform, Sinewave or square wave for AC inverter output voltage. This relates to the compatibility and efficiency of the DC inverter to the AC.

Now many are selling inverter with Auto Shutdown and Low Baterry Alarm facility, where this type of inverter can provide notification about the condition of the battery used. Price inverter market is very diverse but still affordable, following estimates:

  • · Inverter 100 Watt = Rp. 198ribu (40 percent pure power, 1 kilogram)
  • · 150 Watt Inverter = Rp. 225ribu (40 percent pure power, 1 kilogram)
  • · Inverter 200 Watt = Rp. 306ribu (40 percent pure power, 1 Kilogram)
  • · Inverter 300 Watt = Rp. 320ribu (40 percent pure power, 1 kilogram)
  • · Inverter 660 Watt = Rp. 397.900, – (40 percent pure power, 1 kilogram)
  • · Inverter 700 Watt = Rp. 425ribu (40 percent pure power, 1 kilogram)
  • · Inverter 1200 Watt = Rp. 663ribu (40 percent pure power, 1 Kilogram)
  • · Inverter 600 Watt = Rp. 1.095.000, – (50 percent pure power, 3 Kilogram, Auto Charge, Auto UPS)