Low Cost Pure Sine Wave Solar Inverter Circuit · Low Cost Pure Sine Wave Solar Inverter Circuit...
1
Cameron DeAngelis and Luv Rasania Advisors: Prof. Yicheng Lu and Rui Li Goal Our goal is to create a pure sine wave solar inverter circuit while maintaining a low cost. The circuit will have a 12V DC input from a solar panel and a 120V AC output at 60 Hz. Circuit Diagram Results References [1] http://www.townofmorristown.org/index.asp?Type=B_BASIC&SEC=%7B623F5519-152C-489E-838C [2] http://ehelion.net/projects/digitalclock/555timer.html [3] http://www.technologystudent.com/elec1/count1.htm Low Cost Pure Sine Wave Solar Inverter Circuit Research Challenges Implementing a cost-effective control strategy for the circuit Maintaining a relatively high power efficiency Obtaining a pure sine wave output from a square wave input Methodology A clock signal for the circuit will be generated through the use of a 555 timer IC. The clock signal will control a decade counter IC which is responsible for optimization of the waveform and triggering of the H-bridge circuit. The H-bridge circuit will provide a square wave output similar to that of a modified sine wave. A passive filter circuit will keep power dissipation low while properly integrating the square wave into a pure sine wave. A transformer will be used to achieve the correct output voltage. The circuit and obtained 120V 60hz output signal are shown above. Note the signal has minimal distortion and resembles a pure sine wave. Modern sine wave inverters create a very similar output; however at $50, our design is half the price. Background 555 TIMER CIRCUIT DECADE COUNTER IC H-BRIDGE CIRCUIT LOW-PASS FILTER Solar energy is readily available. However, the DC voltage generated by a solar panel must be inverted to an AC voltage to be compatible with our electric grid. Modern pure sine wave inverters are very expensive, often ranging above $100. TRANSFORMER Time (s) Voltage (V)
Transcript of Low Cost Pure Sine Wave Solar Inverter Circuit · Low Cost Pure Sine Wave Solar Inverter Circuit...
Cameron DeAngelis and Luv Rasania Advisors: Prof. Yicheng Lu and Rui Li
Goal
q Our goal is to create a pure sine wave solar inverter circuit while maintaining a low cost.
q The circuit will have a 12V DC input from a solar panel and a 120V AC output at 60 Hz.
Circuit Diagram
Results
References [1] http://www.townofmorristown.org/index.asp?Type=B_BASIC&SEC=%7B623F5519-152C-489E-838C [2] http://ehelion.net/projects/digitalclock/555timer.html [3] http://www.technologystudent.com/elec1/count1.htm
Low Cost Pure Sine Wave Solar Inverter Circuit
Research Challenges q Implementing a cost-effective control strategy for the circuit
q Maintaining a relatively high power efficiency
q Obtaining a pure sine wave output from a square wave input
Methodology q A clock signal for the circuit will be generated through the use
of a 555 timer IC.
q The clock signal will control a decade counter IC which is responsible for optimization of the waveform and triggering of the H-bridge circuit.
q The H-bridge circuit will provide a square wave output similar to that of a modified sine wave.
q A passive filter circuit will keep power dissipation low while properly integrating the square wave into a pure sine wave.
q A transformer will be used to achieve the correct output voltage.
q The circuit and obtained 120V 60hz output signal are shown above. Note the signal has minimal distortion and resembles a pure sine wave.
q Modern sine wave inverters create a very similar output; however at $50, our design is half
the price.
Background
555 TIMER CIRCUIT DECADE
COUNTER IC
H-BRIDGE CIRCUIT LOW-PASS FILTER
q Solar energy is readily available. However, the DC voltage generated by a solar panel must be inverted to an AC voltage to be compatible with our electric grid.
q Modern pure sine wave inverters are very expensive, often ranging above $100.
TRANSFORMER
Time (s)
Volta
ge (
V)
