What is intelligent capacitor?

Intelligent capacitor is mainly composed of intelligent control unit, zero-crossing switching switch device, low voltage power capacitor, and the internal temperature of the capacitor and acquisition of the current signal, etc, divides into total compensation and separate compensation, specific principle diagram is as follows. Parameters

Can a snubber capacitor be used to control a transient voltage?

With high current single IGBT modules a single bus decoupling capacitor alone is usually insufficient for control of transient voltages. In these applications a clamp type RCD circuit like the one shown in Figure 3.5C is usually used. In this circuit the snubber capacitors are charged to the DC bus voltage through the resistors.

How much capacitance should a snubber loop capacitor have?

Usually a capacitance of about 1µF per 100A of collector current is sufficient. The capacitor should be polypropylene film or a similar low loss dielectric and be mounted as close to the module’s terminals as possible. Total snubber loop inductance including the capaci- tor’s internal inductance should be minimized.

How to calculate snubber capacitor?

Where: LB= Parasitic Bus Inductance i = Operating Current C = Value of Snubber Capacitor ∆V2= Peak Snubber Voltage If we establish a limit for ∆V2, then we can calculate the value of snubber capacitor that will be needed for a given power circuit by solving Equation 3.2 for C. Equation 3.3 C = LBi2÷ ∆V22

Can a low inductance capacitor be used on a dual type module?

usually possible to use a single low inductance capacitor connected across the P and N terminals as the snubber shown in Figure 3.5A. Similarly, on dual type modules a low inductance capacitor connected between the C1 and E2 terminals is usually sufficient for control of transient voltages. These configurations are shown in Figure 3.7.

What are the general considerations for IGBT and intelligent power modules?

3.0 General Considerations for IGBT and Intelligent Power Modules H-Series IGBT and Intelligent Power Modules are based on advanced third generation IGBT and free-wheel diode technologies. The general guidelines for power circuit, snubber and thermal system design are essentially the same for both product families.