Universal Power Supply/Bill of Materials: Difference between revisions
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BOM for high frequency up to 65kHz is done with Arduino. | BOM for high frequency up to 65kHz is done with Arduino. | ||
*Arduino has 500hz pulse width modulation - [https://www.arduino.cc/en/Tutorial/PWM]. And 1000hz modulation - [https://www.arduino.cc/reference/en/language/functions/analog-io/analogwrite/]. Up to 62.5 kHz - [https://playground.arduino.cc/Code/PwmFrequency] | *Arduino has 500hz pulse width modulation - [https://www.arduino.cc/en/Tutorial/PWM]. And 1000hz modulation - [https://www.arduino.cc/reference/en/language/functions/analog-io/analogwrite/]. Up to 62.5 kHz - [https://playground.arduino.cc/Code/PwmFrequency] | ||
*PWM.h library for arduino lets you select frequency - [https://www.youtube.com/watch?v=9JXGIeM3BSI] | |||
=Inverter= | =Inverter= | ||
Revision as of 22:26, 9 February 2018
Funtions
The Universal Power Supply should provide these functions:
- Inverter
- Solid state transformer - 1200V, short range transmission lines - $60 cost of 45 kW transformer. [1]
- Induction furnace
- Plasma cutter
- Welder
- Laser cutter
- Charge controller to batteries
- Power conditioning from a windmill
- Induction heater
- Contactor
- Electric motor speed contoller
- Stepper motor controller
Part Reduction
What is the minimum number of electronic parts required to build the Universal Power Supply?
- Arduino for control. Arduino can also measure frequency to 50kHz for feedback - [2]
- IGBTs - choose one that can be scaled extensively, 10kW range (20A x5, 100V)
- Resistors
- Capacitors (filters)
- Small transformers
- Current sensors - Hall Effect Sensors
- Terminal blocks, 50A [3]
- Wire (8 ga, 55A, 600V) [4]
- Switches. Small switches, with IGBT serving as larger switch or contactor
- 200A contactor relay - 48DC - [5]
- Go for 600V on components, at 50A for wires, need 7 wires for 210kW - manageable as a modular system
Pulse Width Modulation
BOM for high frequency up to 65kHz is done with Arduino.
- Arduino has 500hz pulse width modulation - [6]. And 1000hz modulation - [7]. Up to 62.5 kHz - [8]
- PWM.h library for arduino lets you select frequency - [9]
Inverter
Needs Arduino, 4 gate drivers, and 4 transistors as a minimum set.
- Modified Sinusoidal pulse width modulation - http://www.theorycircuit.com/arduino-inverter-circuit/
- Sample inverter using a transformer
- Transformerless - [10]