| 摘要 |
The invention relates to a H-bridge inverter and a method for controlling a H-bridge converter. The H-bridge inverter (1) comprises first and second DC terminals (Tdc1, Tdc2), first and second AC terminals (Tac1, Tac2), a first switch (S1), a second switch (S2), a third switch (S3) and a fourth switch (S4). The inverter further comprises a control circuit for controlling the switching of the first, second, third and fourth switches (S11, S2, S3, S4). The control circuit is configured to control the switches (S1, S2, S3, S4) in continuous mode between the following states: a first state where the first switch (S1) is turned off, the second switch (S2) is performing PWM switching, the third switch (S3) is turned off and the fourth switch (S4) is turned on; a second state where the first switch (S1) is turned off, the second switch (S2) is performing PWM switching, the third switch (S3) is turned on and the fourth switch (S4) is turned off; a third state where the first switch (S1) is turned off, the second switch (S2) is turned on, the third switch (S3) is turned off and the fourth switch (54) is performing PWM switching; and a fourth state where the first switch (S1) is turned on, the second switch (S2) is turned off, the third switch (S3) is turned off and the fourth switch (S4) is performing PWM switching. |
| 主权项 |
1. H-bridge inverter, comprising:
first and second DC terminals (Tdc1, Tdc2); first and second AC terminals (Tac1, Tac2); a first switch (S1) connected between the first DC terminal (Tdc1) and the first AC terminal (Tac1); a second switch (S2) connected between the first AC terminal (Tac1) and the second DC terminal (Tdc2); a third switch (S3) connected between the first DC terminal (Tdc1) and the second DC terminal (Tdc2); a fourth switch (S4) connected between the second AC terminal (Tac2) and the second DC terminal (Tdc2); a control circuit for controlling the switching of the first, second, third and fourth switches (S1, S2, S3, S4);wherein the first, second, third and fourth switches (S1, S2, S3, S4) comprises anti-parallel diodes or are connected in parallel with anti-parallel diodes;and further wherein the control circuit is configured to control the switches (S1, S2, S3, S4) in continuous mode between four states, said states consisting of:
a first state where the first switch (S1) is turned off, the second switch (S2) is performing PWM switching, the third switch (S3) is turned off and the fourth switch (S4) is turned on; a second state where the first switch (S1) is turned off, the second switch (S2) is performing PWM switching, the third switch (S3) is turned on and the fourth switch (S4) is turned off; a third state where the first switch (S1) is turned off, the second switch (S2) is turned on, the third switch (S3) is turned off and the fourth switch (S4) is performing PWM switching; a fourth state where the first switch (S1) is turned on, the second switch (S2) is turned off, the third switch (S3) is turned off and the fourth switch (S4) is performing PWM switching. |
