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The three-phase bridge semi-control rectifier system is connected with the power grid by transformer, and through the coupling of transformer, the main line of thyristor module obtains a suitable input voltage, which makes the thyristor module operate under the excessive power factor. The transformer is isolated from the main line and the power grid, and it can also suppress the harmonic components from the converter to the grid. RC overvoltage suppression line is selected to protect the protection line, and the over-current protection is completed by the fast fuse. The zigzag synchronous kj004 integrated trigger line is selected. The trigger line is phased by a synchronous transformer to ensure the same frequency of trigger line and main line. The thyristor module is triggered, so that the three-phase semi control bridge can rectifier AC into DC, and push the DC motor to run in electric mode.

Features and advantages

1. Compact design, two screw installation

2. Heat transfer and isolation by direct copper plate (low r th)

3. Low resistance and high reliability in steady state

4. High surge current and low forward voltage drop

5. Packaging with DCB ceramic substrate

6. Isolation voltage 3000 V~

7. PLANAR PASSIVATION chip

8. Lead wire for PC board welding

application area

1. Suitable for DC Driver with fixed rotation direction

2. Controlled field rectifier of DC motor

3. Controlled battery charger

4. Input rectifier of PWM inverter

5. Battery DC power supply

As shown in the figure, the three-phase semi-control bridge has resistance load. According to the requirements, the armature inductance and armature resistance of the motor shall be considered, so it is resistance load. The running characteristics of the circuit are that the thyristor module of the common cathode group must be triggered to change the current, and the common anode group diode is often in the natural commutation point. Therefore, the flow is still changed 6 times in the first cycle, 3 times is natural exchange, and the other three times is triggered current change. The transformer is connected by △ Y type. The second side of the transformer is connected to star to obtain zero line, while the first side is connected to triangle to avoid the third harmonic flowing into the power grid.

The above mentioned is the introduction of rectifier module manufacturer to three-phase semi-control rectifier bridge by semipower. Semipower is a power semiconductor power module supplier in the field of power electronic technology. It supplies the formulation, production, processing and production of semiconductor power modules for all enterprises, and also provides the processing business of materials for each enterprise or OEM processing. The main products include IGBT module, thyristor module, super fast recovery epitaxial two pole module, single-phase rectifier bridge module, three-phase rectifier bridge module, rectifier diode module, Schottky diode component power module and other power semiconductor electronic components.