Power conversion circuit having fault protection and voltage balance functions
First Claim
Patent Images
1. A circuit comprising:
- a plurality of switching modules;
a control module;
a driving module electrically coupled between the control module and a corresponding one of the switching modules for generating a driving signal, the driving module comprising;
a normal driving unit for turning on and off the corresponding switching module according to a first command signal from the control module; and
a fault protection unit for lowering the driving signal from a driving value to a protection value according to a second command signal from the control module during a fault protection period after the control module receives a fault signal, anda voltage balance module electrically coupled to the switching modules for injecting a current to a drive terminal of the switching module to balance voltage among the switching modules, the voltage balance module including a first resistance, a first capacitor, a second resistance, a second capacitor, and a diode, wherein;
first terminals of the first resistance, the first capacitor, the second resistance, and the second capacitor are electrically coupled with an anode of the diode;
second terminals of the first resistance and the first capacitor are electrically coupled with a collector of the switching module;
second terminals of the second resistance and the second capacitor are electrically coupled with an emitter of the switching module; and
a cathode of the diode is electrically coupled to a gate of the switching module.
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Abstract
A circuit includes a switching module, a control module, and a driving module. The driving module is electrically coupled between the control module and the switching module for generating a driving signal. The driving module includes a normal driving unit and a fault protection unit. The normal driving unit is for turning on and off the switching module according to a first command signal from the control module. The fault protection unit is for lowering the driving signal from a driving value to a protection value according to a second command signal from the control module during a fault protection period after the control module receives a fault signal.
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Citations
17 Claims
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1. A circuit comprising:
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a plurality of switching modules; a control module; a driving module electrically coupled between the control module and a corresponding one of the switching modules for generating a driving signal, the driving module comprising; a normal driving unit for turning on and off the corresponding switching module according to a first command signal from the control module; and a fault protection unit for lowering the driving signal from a driving value to a protection value according to a second command signal from the control module during a fault protection period after the control module receives a fault signal, and a voltage balance module electrically coupled to the switching modules for injecting a current to a drive terminal of the switching module to balance voltage among the switching modules, the voltage balance module including a first resistance, a first capacitor, a second resistance, a second capacitor, and a diode, wherein; first terminals of the first resistance, the first capacitor, the second resistance, and the second capacitor are electrically coupled with an anode of the diode; second terminals of the first resistance and the first capacitor are electrically coupled with a collector of the switching module; second terminals of the second resistance and the second capacitor are electrically coupled with an emitter of the switching module; and a cathode of the diode is electrically coupled to a gate of the switching module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power conversion circuit, comprising:
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a control module; a converter electrically coupled to the control module for converting a first power to a second power, and wherein the converter comprises; a plurality of switching modules; a driving module electrically coupled between the control module and a corresponding one of the switching modules for generating a driving signal, the driving module comprising; a normal driving unit for turning on and off the corresponding switching module according to a first command signal from the control module; a fault protection unit for lowering the driving signal from a driving value to a protection value according to a second command signal from the control module during a fault protection period after the control module receives a fault signal, and a voltage balance module electrically coupled to the switching modules for injecting a current to a drive terminal of the switching module to balance voltage among the switching modules, the voltage balance module including a first resistance, a first capacitor, a second resistance, a second capacitor, and a diode, wherein first terminals of the first capacitor, the first resistance, the second capacitor, and the second resistance are electrically coupled with an anode of the diode;
wherein second terminals of the first resistance and the first capacitor are electrically coupled with a collector of the switching module;
wherein second terminals of the second resistance the second capacitor are electrically coupled with an emitter of the switching; and
a cathode of the diode is electrically coupled to a gate of the switching module. - View Dependent Claims (12, 13, 14)
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15. A power conversion circuit, comprising:
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a control module; a converter electrically coupled to the control module, the converter including a plurality of switching modules and a driving module electrically coupled to a corresponding one of the switching modules, the driving module having a normal driving unit for turning on and off a corresponding switching module according to a command signal from the control module; and a voltage balance module electrically coupled to the switching modules for injecting a current to a drive terminal of the switching module to balance voltage among the switching modules, the voltage balance module including a first resistance, a first capacitor, a second resistance, a second capacitor, and a diode, wherein second terminals of the first capacitor and first resistance are electrically coupled with a collector of a corresponding one of the switching modules;
wherein second terminals of the first resistance the first capacitor are electrically coupled with a collector of the corresponding one of the switching modules; and
wherein second terminals of the second resistance and the second capacitor are electrically coupled with an emitter of the corresponding one of the switching modules. - View Dependent Claims (16, 17)
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Specification