Power conversion device, driving device and driving method

Patent metadata

Field	Value
Publication number	US-10009024-B2
Application number	US-201514741443-A
Country	US
Kind code	B2
Filing date	Jun 16, 2015
Priority date	Jun 25, 2014
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

A driving device includes a driving primary circuit, an isolating transforming circuit, and at least one driving secondary circuit. The isolating transforming circuit is coupled to the driving primary circuit. The at least one driving secondary circuit is coupled to the isolating transforming circuit. The driving primary circuit receives a control signal and a power signal. The driving primary circuit generates a driving pulse signal according to the control signal and generates a power pulse signal according to the power signal. The driving primary circuit transmits the driving pulse signal and the power pulse signal to the at least one driving secondary circuit through the isolating transforming circuit. The at least one driving secondary circuit receives the driving pulse signal so as to generate a driving signal, and the at least one driving secondary circuit drives a power semiconductor switch unit according to the driving signal.

First claim

What is claimed is:

1. A driving device, comprising:
a driving primary circuit configured to receive a control signal and a power signal, wherein the driving primary circuit is configured to generate a driving pulse signal based on the control signal, and generate 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, another one of the third pulse transformers comprises a primary winding and a plurality of secondary windings, and the primary windings of the third pulse transformers are electrically coupled to the driving primary circuit, wherein the primary windings of the third pulse transformers are sequentially connected to each other in series;
wherein each 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, another one of the sixth pulse transformers comprises a primary winding and a plurality of secondary windings, and the primary windings of the sixth pulse transformers are electrically coupled to the driving primary circuit, wherein the primary windings of the sixth pulse transformers are sequentially connected to each other in series; and
at least one driving secondary circuit configured to be coupled to the secondary windings, wherein the driving primary circuit transmits the driving pulse signal through the second isolating transforming unit and transmits the power pulse signal through the first isolating transforming unit to the at least one driving secondary circuit, wherein the at least one driving secondary circuit receives the driving pulse signal and generates a driving signal based on the driving pulse signal for driving a power semiconductor switch unit,
wherein the driving primary circuit comprises:
a driving signal generating unit 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 at least one driving secondary circuit comprises:
a driving signal receiving unit configured to be coupled to the second isolating transforming unit, wherein the driving signal generating unit transmits the driving pulse signal to the driving signal receiving unit through the second isolating transforming unit, wherein the driving signal receiving unit is configured to receive the driving pulse signal and generate the driving signal based on the driving pulse signal so as to drive the power semiconductor switch unit; and
a driving secondary power circuit configured to be coupled to the first isolating transforming unit, wherein the driving primary power circuit transmits the power pulse signal to the driving secondary power circuit through the first isolating transforming unit, wherein the driving secondary power circuit is configured to receive the power pulse signal and generate a driving secondary power based on the power pulse signal so as to provide the driving secondary power for the driving signal receiving 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 the 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.

2. The driving device of claim 1 , wherein the driving signal receiving unit comprises:
a common-mode noise suppressor configured to be coupled to the second isolating transforming unit, and configured to receive and suppress the common-mode noise of the driving pulse signal;
a second pulse modulator configured to be coupled to the common-mode noise suppressor, wherein the second pulse modulator is configured to receive the driving pulse signal, and the second pulse modulator is configured to demodulate and generate the driving signal based on the driving pulse signal; and
a driving power amplifier configured to be coupled to the second pulse modulator, and configured to amplify the driving signal.

3. The driving device of claim 1 , wherein the driving primary circuit further comprises:
a protection signal receiving unit configured to be coupled to the driving primary power circuit, wherein the protection signal receiving unit is configured to receive a protection pulse signal and generate a protection signal based on the protection pulse signal, wherein the driving primary power circuit is configured to provide the driving primary power for the protection signal receiving unit;
wherein the isolating transforming circuit further comprises:
a third isolating transforming unit configured to be coupled to the protection signal receiving unit;

wherein the number of the at least one driving secondary circuit is plural, and each of the driving secondary circuits further comprises:
a protection signal generating unit configured to be coupled to the third isolating transforming unit and the driving secondary power circuit, wherein each of the protection signal generating units of the driving secondary circuits is configured to receive a malfunction signal, and generate a malfunction pulse signal based on the malfunction signal, wherein the third isolating transforming unit is configured to receive the malfunction pulse signals and output the protection pulse signal to the protection signal receiving unit.

4. The driving device of claim 3 , wherein the protection signal receiving unit comprises:
a protection pulse receiver configured to be coupled to the third isolating transforming unit and the first pulse modulator, wherein the protection pulse receiver is configured to receive the protection pulse signal, and generate the protection signal bas

Assignees

• Delta Electronics Shanghai Co

Inventors

• Gan Hong-Jian
• Wang Ming
• Ying Jian-Ping

Classifications

• H03K17/61

  using transformer coupling · CPC title

• H03K17/082

  by feedback from the output to the control circuit · CPC title

• H03K17/691 Primary

  using transformer coupling · CPC title

• H03K2217/0081

  Power supply means, e.g. to the switch driver · CPC title

• H03K17/18

  Modifications for indicating state of switch · CPC title