CC-TAID01 51306733-175 Power Circuit Inverter

CC-TAID01 51306733-175 surge voltage energy and 1/2LpI is proportional to the energy, so reduce the Lp is the main, can choose to use multi-layer positive and negative cross, wide bias-shaped iterative bus, including IGBT interconnection, and large capacitor connection, etc., such as high-power frequency converter bus, etc., are used in the above method, such as Rockwell A-B company and other inverters is such a method to For example, Rockwell A-B and other inverters are used in this way to reduce the inductance of the power circuit.

CC-TAID01 51306733-175 gate G drive or control signals and the main current share a current path, it will lead to a ground loop, which may appear to be supposed to ground potential, while the actual potential value of a few volts, so that the original bias cut-off device, it may occur conduction, and cause false operation. Therefore, in high-power IGBT applications, or di/dt is very high, it is difficult to occur the occurrence of the above phenomenon, so the device does not have to use the capacity of the following three circuits

CC-TAID01 51306733-175 is the power loss of the IGBT during the turn-on or turn-off transition process. When the PWM signal frequency > 5KHZ switching losses will be very significant, so in the use of inverters, must be the correct choice of the size of the carrier frequency value, is an important issue. Specifically how to select the value, in short, the size of the carrier frequency and device switching losses, device heating, current waveforms, the size of the interference, motor noise and vibration, etc., so the motor and site conditions to correctly select the size of the value of the carrier frequency, but also belongs to the frequency converter debugging is a major link.