Power conversion device, driving device and driving method

A power conversion device, comprising:

• a first power semiconductor switch unit;
• a driving device configured to drive the first power semiconductor switch unit, wherein the driving device comprises:
• a control circuit configured to output a control signal;
• a driving primary circuit configured to be coupled to the control circuit, and configured to receive the control signal and a power signal, wherein the driving primary circuit generates a driving pulse signal based on the control signal, and generates a power pulse signal based on the power signal;
• an isolating transforming circuit configured to be coupled to the driving primary circuit, wherein the isolating transforming circuit comprises a first isolating transforming unit and a second isolating transforming unit, wherein the first isolating transforming unit comprises a plurality of first pulse transformers, or a second pulse transformer, or a plurality of third pulse transformers, and the second isolating transforming unit comprises a plurality of fourth pulse transformers, or a fifth pulse transformer, or a plurality of sixth pulse transformers;
• wherein each one of the first pulse transformers comprises a primary winding and a secondary winding, and the primary windings of the first pulse transformers are electrically coupled to the driving primary circuit, wherein the primary windings of the first pulse transformers are sequentially connected to each other in series;
• wherein the second pulse transformer comprises a primary winding and a plurality of secondary windings, and the primary winding is electrically coupled to the driving primary circuit;
• wherein one of the third pulse transformers comprises a primary winding and a secondary winding, and another one of the third pulse transformers comprises a primary winding and a plurality of secondary windings, wherein the primary windings of the third pulse transformers are electrically coupled to the driving primary circuit, and the primary windings of the third pulse transformers are sequentially connected to each other in series;
• wherein one of the fourth pulse transformers comprises a primary winding and a secondary winding, and the primary windings of the fourth pulse transformers are electrically coupled to the driving primary circuit, wherein the primary windings of the fourth pulse transformers are sequentially connected to each other in series;
• wherein the fifth pulse transformer comprises a primary winding and a plurality of secondary windings, and the primary winding is electrically coupled to the driving primary circuit;
• wherein one of the sixth pulse transformers comprises a primary winding and a secondary winding, and another one of the sixth pulse transformers comprises a primary winding and a plurality of secondary windings, wherein the primary windings of the sixth pulse transformers are electrically coupled to the driving primary circuit, and the primary windings of the sixth pulse transformers are sequentially connected to each other in series;
• and
• a plurality of driving secondary circuits configured to be coupled to the secondary windings, and configured to receive the driving pulse signal and the power pulse signal through the isolating transforming circuit, wherein the driving secondary circuits generate a driving signal based on the driving pulse signal so as to drive the first power semiconductor switch unit,
• wherein the driving primary circuit comprises:
• a driving signal generating unit configured to be coupled to the control circuit, wherein the driving signal generating unit is configured to receive the control signal, and generate the driving pulse signal based on the control signal;
• and
• a driving primary power circuit configured to be coupled to the driving signal generating unit, wherein the driving primary power circuit receives the power signal and generates a driving primary power and the power pulse signal based on the power signal, wherein the driving primary power circuit is configured to provide the driving primary power for the driving signal generating unit;
• wherein the driving signal generating unit comprises:
• a driving signal receiver configured to receive the control signal;
• a noise filter configured to be coupled to the driving signal receiver, and configured to receive and filter noise of the control signal;
• and
• a first pulse modulator configured to be coupled to the noise filter, wherein the first pulse modulator is configured to receive the control signal, and the first pulse modulator is configured to modulate and generate the driving pulse signal based on the control signal,
• wherein each of the driving secondary circuits comprises a driving signal receiving unit and a driving secondary power circuit, wherein the driving signal receiving units are all coupled to the second isolating transforming unit, and configured to receive the driving pulse signal through the second isolating transforming unit, wherein the driving signal receiving units generate the driving signal based on the driving pulse signal, and are configured to drive the first power semiconductor switch unit, wherein the driving secondary power circuits are all coupled to the first isolating transforming unit, wherein the driving secondary power circuits are configured to receive the power pulse signal through the first isolating transforming unit, and generate a plurality of driving secondary power based on the power pulse signal, wherein the driving secondary power circuits provide the driving secondary power for the driving signal receiving units.