Power module for medium and high-voltage frequency converter and frequency converter comprising same
A power module for medium and high-voltage frequency converter and a frequency converter comprising same. The power module has a three-phase alternating current input and a single-phase alternating current output, and comprises a circuit board ( 100 ), a rectifying module ( 120 ), a capacitor bank ( 130 ), and an inverting module ( 140 ), wherein the rectifying module, the capacitor bank and the inverting module are all mounted on the circuit board. The power module has a compact structure and is convenient to cool.
1. A power module for medium and high-voltage frequency converter, having a three-phase AC input and a single-phase AC output, comprising:
a circuit board; a rectifying module; a capacitor bank; and an inverting module; wherein the rectifying module, the capacitor bank, and the inverting module are all directly mounted on the circuit board and arranged such that a cooling air flows, in order, through the rectifying module, the capacitor bank, and the inverting module, and wherein the power module further comprises a control board vertically mounted on the circuit board along a flow direction of the cooling air and a supporting structure for supporting the circuit board.
2. The power module according to claim 1 , wherein the capacitor bank includes capacitors and at least part of the capacitors in the capacitor bank are welded on the circuit board.
3. The power module according to claim 1 , wherein active capacitors in the capacitor bank are configured to stand on the circuit board.
4. The power module according to claim 1 further including: a housing with a recess provided at the rear end thereof.
5. The power module according to claim 1 , wherein the circuit board further includes a relay and a charging resistor thereon.
6. The power module according to claim 1 , including: at least two fuses arranged in parallel with the circuit board and in parallel with each other.
7. The power module according to claim 1 , wherein the rectifying module, the capacitor bank and the inverting module are configured for cooling air flow.
8. The power module according to claim 1 further including: an auxiliary computer.
9. A converter including the power module according to claim 1 .
10. The power module according to claim 4 , wherein the housing further includes a positioner thereon.
11. A power module for a medium or high-voltage frequency converter, comprising:
a circuit board;
a rectifying module directly mounted on the circuit board;
a capacitor bank directly mounted on the circuit board;
an inverting module directly mounted on the circuit board,
wherein the power module includes a three-phase AC input and a single-phase AC output,
wherein the power module is arranged such that a cooling air flows, in order, through the rectifying module, the capacitor bank, and the inverting module, and
wherein the power module further comprises a control board vertically mounted on the circuit board along a flow direction of the cooling air and a supporting structure for supporting the circuit board.
12. The power module according to claim 11 , wherein the capacitor bank includes capacitors welded on the circuit board.
13. The power module according to claim 11 , wherein the capacitor bank includes capacitors configured to stand on the circuit board.
14. The power module according to claim 11 , wherein the circuit board further includes a relay and a charging resistor.