IGBT based Single & Three phase PWM inverter
This trainer is designed to study the working principle of IGBT based DC-AC inverter ( single phase & 3 phase) using various PWM techniques. It consists of
- IGBT PWM Controller & 3 Phase IGBT Power Circuit
- RL Load & DC Power supply
PWM controller
- Digital IC (Dspic4011) based Single phase & 3 Phase PWM generation
- 6 Numbers of PWM Outputs with Frequency & Modulation index variation
- Digital keys for PWM adjustment
- LCD is provided to display PWM Details
- 5 khz Switching frequency operation
- PWM outputs are terminated by front panel Connector.
IGBT power module (Voltage source Inverter)
- 3 Phase Voltage source inverter Power circuit using 6 number of IGBT Rating @ 600V , 20A
- IGBT is fixed with suitable heat sink and snubber circuit for protection
- IGBT Power circuit input and outputs are terminated by suitable rating banana connectors in front panel with necessary indication
- One number of diode rectifier ( 600V @ 35A ) is provided to converter input AC voltage to DC Bus voltage
- DC Capacitor is provided ( centre point type) at diode rectifier output side for Filter
- Six Number of PWM Isolator IC (6N137) is used to isolate All the six PWM signals input
- One number of +15V@1amp fixed dc power supply is provided for PWM Isolator input side for power excitation
- Built in IGBT Gate Driver (IR2112)is provided in SPM for IGBT Gate signal amplification
- Power Circuit Input 0-30V DC
- Output : 3 Ø 20V @ 2A , Variable Voltage , Variable frequency
DC Power supply
- 0-30V /2A DC Power supply for Power circuit Input
RL Load
- 3 Numbers of fixed R & Fixed L load is provided