IGBT or SCR? This is a decision that needs c"&"areful consideration
If we compare a graphitization furnace to a person, then the induction heating power supply is its heart. When choosing a power supply solution, many customers struggle with the choice: IGBT or SCR (Semiconductor Rectifier), "&"which should they choose?
IGBT—Highly Recommended Solution
Insulated Gate Bipolar Transistor, a fully controllable power electronic device, with power adjusted via high-frequency PWM:
- "&"Extremely High Power Factor: Always maintained above 0.95, maximizing electricity cost efficiency
- Grid Friendly: Extremely low harmonic distortion rate, eliminating the need for bulky filtering devices
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- Small Size: Saves workshop space
Only Disadvantage: Slightly higher initial purc"&"hase cost, but the price difference is quickly recouped through electricity costs.
SCR (Silicon Controlled Rectifier) – A Budget-Conscious Option
Semi-controlled devices that regulate power through phase "&"shift control.
Problems: Low power factor at low power output, harmonics injected into the grid. Requires additional APF harmonic mitigation device, significant investment and space consumption. Large size, temperature control precision inferior"&" to IGBTs. **Lifecycle Cost Calculation** **Total Cost Calculation Cannot Be Based Solely on Purchase Price:** **Tableborder-collapse: collapse; width: 100%; margin: 15px 0;""> **Cost Items** **IGBT** SCRProcurement CostHigherLowerAnnual Electricity Cost15-20% LowerBenchmarkHarmonic Mitigation"&"No needRequires APFConclusi"&"on: Unless the budget is extremely limited, you prioritize ease of maintenance when choosing a silicon-controlled inverter, or the operating frequency is very low, IGBTs are a wiser choice.
