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CN-121984384-A - High-power compressor driving circuit, high-power compressor and control method thereof

CN121984384ACN 121984384 ACN121984384 ACN 121984384ACN-121984384-A

Abstract

The invention discloses a high-power compressor driving circuit, a high-power compressor and a control method thereof, wherein the high-power compressor driving circuit comprises a controller, a three-phase half-bridge driving circuit, a three-phase half-bridge circuit and a direct current-direct current converter, the three-phase half-bridge driving circuit is connected with the controller, the three-phase half-bridge driving circuit is connected with the three-phase half-bridge circuit, the direct current-direct current converter is connected with the controller and the three-phase half-bridge driving circuit, the three-phase half-bridge circuit comprises 12 insulated gate bipolar transistors, and each of three phases of the three-phase half-bridge circuit comprises 4 insulated gate bipolar transistors and is used for driving a connected permanent magnet synchronous scroll compressor. According to the embodiment of the invention, the connected permanent magnet synchronous scroll compressor is driven by the double-tube parallel flow expansion mode corresponding to the three-phase half-bridge circuit, so that full load power of the permanent magnet synchronous scroll compressor can meet the driving refrigeration requirement of large equipment, and the load overcurrent capacity is enhanced in the double-tube parallel flow expansion mode, and the influence of the ring temperature is reduced.

Inventors

  • CAO WEIHUA
  • LIANG XIANGHUI

Assignees

  • 深圳艾为电气技术股份有限公司

Dates

Publication Date
20260505
Application Date
20260204
Priority Date
20250205

Claims (10)

  1. 1. The high-power compressor driving circuit is characterized by comprising a controller, a three-phase half-bridge driving circuit, a three-phase half-bridge circuit and a direct current-direct current converter, wherein the three-phase half-bridge driving circuit is connected with the controller, the three-phase half-bridge driving circuit is also connected with the three-phase half-bridge circuit, the direct current-direct current converter is connected with the controller and the three-phase half-bridge driving circuit, the three-phase half-bridge circuit comprises 12 insulated gate bipolar transistors, each phase of three phases of the three-phase half-bridge circuit comprises 4 insulated gate bipolar transistors, and the three-phase half-bridge circuit adopts the same batch of materials and is used for driving the connected permanent magnet synchronous scroll compressor; The high-power compressor driving circuit further comprises a CAN communication chip and a sampling circuit, wherein the CAN communication chip is connected with the controller and the DC-DC converter; The input end of the direct current-direct current converter is connected with a 24V direct current power supply through a first diode, and the 24V direct current power supply is also connected with a high-voltage side two-stage common mode inductance circuit; The three-phase half-bridge circuit is also connected with a direct current power supply at a high voltage side through a first capacitor, the direct current power supply is used for providing stable direct current voltage for the three-phase half-bridge circuit, and two ends of the first capacitor are connected with a two-stage common-mode inductance circuit at a low voltage side.
  2. 2. The high power compressor driving circuit of claim 1, wherein a first output terminal of the dc-dc converter outputs a low side 5V voltage to the CAN communication chip, a second output terminal of the dc-dc converter outputs a 16V voltage to the three-phase half bridge driving circuit, and a third output terminal of the dc-dc converter outputs a high side 5V voltage path which is stepped down to 3.3V by a low dropout linear voltage regulator and is output to the sampling circuit.
  3. 3. The high power compressor driving circuit according to any one of claims 1 to 2, wherein the high voltage side two-stage common mode inductance circuit includes a first common mode inductance, a second common mode inductance, a fifth capacitance, a sixth capacitance, a seventh capacitance, an eighth capacitance, a ninth capacitance, a tenth capacitance, an eleventh capacitance, a twelfth capacitance, a thirteenth capacitance, a fourteenth capacitance, a fifteenth capacitance, a sixteenth capacitance, a seventeenth capacitance, and an eighteenth capacitance; The first end of the fifth capacitor is connected with the positive electrode of the direct current power supply, the second end of the fifth capacitor is connected with the negative electrode of the direct current power supply, the first end of the sixth capacitor is connected with the positive electrode of the direct current power supply, the second end of the sixth capacitor is connected with the first end of the seventh capacitor and both are grounded, the second end of the seventh capacitor is connected with the negative electrode of the direct current power supply, the first end of the eighth capacitor is connected with the positive electrode of the direct current power supply, the second end of the eighth capacitor is connected with the first end of the ninth capacitor and both are grounded, the second end of the ninth capacitor is connected with the negative electrode of the direct current power supply, the first end of the tenth capacitor is connected with the positive electrode of the direct current power supply, the second end of the tenth capacitor is connected with the first end of the eleventh capacitor and both are grounded, and the second end of the eleventh capacitor is connected with the negative electrode of the direct current power supply; A first end of a first winding in the first common mode inductor is connected with a positive electrode of the direct current power supply, a second end of the first winding in the first common mode inductor is connected with a first end of the twelfth capacitor, a first end of a second winding in the first common mode inductor is connected with a negative electrode of the direct current power supply, and a second end of the second winding in the first common mode inductor is connected with a second end of the twelfth capacitor; The first end of the thirteenth capacitor is connected with the second end of the first winding in the first common-mode inductor, and the second end of the thirteenth capacitor is connected with the first end of the fourteenth capacitor and is also grounded; A first end of a first winding in the second common-mode inductor is connected with a second end of the first winding in the first common-mode inductor, a first end of the twelfth capacitor and a first end of the thirteenth capacitor, and a second end of the first winding in the second common-mode inductor is connected with the first end of the first capacitor; the first end of the second winding in the second common-mode inductor is connected with the second end of the second winding in the first common-mode inductor, the second end of the twelfth capacitor and the second end of the fourteenth capacitor, and the second end of the second winding in the second common-mode inductor is connected with the second end of the first capacitor; A first end of the fifteenth capacitor is connected with a second end of the first winding in the second common mode inductor, and a second end of the fifteenth capacitor is connected with a first end of the sixteenth capacitor and is also grounded; the second end of the seventeenth capacitor is connected with the second end of the second winding in the second common mode inductor, the first end of the seventeenth capacitor is connected with the second end of the first winding in the second common mode inductor, the second end of the seventeenth capacitor is connected with the first end of the eighteenth capacitor and is also grounded, and the second end of the eighteenth capacitor is connected with the second end of the second winding in the second common mode inductor.
  4. 4. The high power compressor drive circuit of any one of claims 1-2, wherein the low side two-stage common mode inductor circuit comprises a third common mode inductor, a fourth common mode inductor, a second diode, a TVS diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a nineteenth capacitor, a twentieth capacitor, a twenty-first capacitor, a twenty-second capacitor, a twenty-third capacitor, a twenty-fourth capacitor, a twenty-fifth capacitor, a twenty-sixth capacitor, a twenty-seventh capacitor, a twenty-eighth capacitor, a twenty-ninth capacitor, a thirty-first capacitor, a thirty-second capacitor, a thirty-third capacitor, a thirty-fourth capacitor, a thirty-fifth capacitor, a thirty-sixth capacitor, a thirty-seventh capacitor, a thirty-eighth capacitor, a thirty-ninth capacitor, a fortieth second capacitor, a fortieth third capacitor, and a fortieth capacitor; The first end of the nineteenth capacitor is connected with the positive electrode of the 24V direct current power supply, and the second end of the nineteenth capacitor is connected with the first end of the twentieth capacitor; the second end of the twenty-first capacitor is connected with the anode of the 24V direct current power supply, the first end of the twenty-first capacitor is connected with the anode of the 24V direct current power supply, the second end of the twenty-first capacitor is connected with the first end of the twenty-second capacitor and is also grounded, the second end of the twenty-second capacitor is connected with the anode of the 24V direct current power supply, the first end of the twenty-third capacitor is connected with the anode of the 24V direct current power supply, the second end of the twenty-third capacitor is connected with the first end of the twenty-fourth capacitor and is also grounded, the second end of the twenty-fourth capacitor is connected with the anode of the 24V direct current power supply, the first end of the twenty-fifth capacitor is connected with the first end of the twenty-sixth capacitor and is also grounded, and the second end of the twenty-sixth capacitor is connected with the anode of the 24V direct current power supply; The positive electrode of the second diode is connected with the positive electrode of the 24V direct current power supply and is also connected with the first end of the TVS diode, and the negative electrode of the second diode is connected with the first end of the first winding in the third common mode inductor; The first end of the twenty-seventh capacitor is connected with the first end of the first winding in the third common-mode inductor, the second end of the twenty-seventh capacitor is connected with the first end of the twenty-eighth capacitor, the second end of the twenty-eighth capacitor is connected with the first end of the second winding in the third common-mode inductor, the first end of the twenty-ninth capacitor is connected with the first end of the first winding in the third common-mode inductor, the second end of the twenty-ninth capacitor is connected with the first end of the thirty-eighth capacitor, and the second end of the thirty-eighth capacitor is connected with the first end of the second winding in the third common-mode inductor; The first end of the thirty-first capacitor is connected with the second end of the first winding in the third common-mode inductor, the second end of the thirty-first capacitor is connected with the first end of the second winding in the third common-mode inductor, the first end of the thirty-third capacitor is connected with the second end of the first winding in the third common-mode inductor and the first end of the first resistor, the second end of the thirty-third capacitor is connected with the first end of the fourth capacitor, the second end of the thirty-fourth capacitor is connected with the second end of the second winding in the third common-mode inductor and the first end of the second resistor, the first end of the thirty-fifth capacitor is connected with the first end of the first winding in the fourth common-mode inductor, the second end of the thirty-fifth capacitor is connected with the second end of the first winding in the third common-mode inductor, the second end of the thirty-fifth capacitor is connected with the second end of the fourth winding in the thirty-fifth common-mode inductor, the second end of the thirty-fifth capacitor is connected with the fourth end of the fourth winding in the thirty-fifth common-mode inductor; A second end of a first winding in the fourth common-mode inductor is connected with a first end of the thirty-ninth capacitor and a first end of a third resistor; the second end of the second winding in the fourth common mode inductor is connected with the second end of the fortieth capacitor and the first end of the fourth resistor; The first end of the forty-first capacitor is connected with the second end of the third resistor, the second end of the forty-first capacitor is connected with the first end of the forty-second capacitor, the second end of the forty-third capacitor is connected with the second end of the third resistor, the second end of the forty-third capacitor is connected with the first end of the forty-fourth capacitor and is also grounded, and the second end of the forty-fourth capacitor is connected with the second end of the fourth resistor.
  5. 5. The high-power compressor is characterized by comprising the high-power compressor driving circuit according to any one of claims 1-4, and further comprising a permanent magnet synchronous scroll compressor, wherein a three-phase half-bridge circuit in the high-power compressor driving circuit is connected with the permanent magnet synchronous scroll compressor, the high-power compressor driving circuit comprises a controller, a three-phase half-bridge driving circuit, a three-phase half-bridge circuit and a direct current-direct current converter, the three-phase half-bridge driving circuit is connected with the controller, the three-phase half-bridge driving circuit is also connected with the three-phase half-bridge circuit, the direct current-direct current converter is connected with the controller and the three-phase half-bridge driving circuit, the three-phase half-bridge circuit comprises 12 insulated gate bipolar transistors, each phase in three phases of the three-phase half-bridge circuit comprises 4 insulated gate bipolar transistors, and the three-phase half-bridge circuit adopts the same batch material and is used for driving the connected permanent magnet synchronous scroll compressor; The high-power compressor driving circuit further comprises a CAN communication chip and a sampling circuit, wherein the CAN communication chip is connected with the controller and the DC-DC converter; The input end of the direct current-direct current converter is connected with a 24V direct current power supply through a first diode, and the 24V direct current power supply is also connected with a high-voltage side two-stage common mode inductance circuit; The three-phase half-bridge circuit is also connected with a direct current power supply at a high voltage side through a first capacitor, the direct current power supply is used for providing stable direct current voltage for the three-phase half-bridge circuit, and two ends of the first capacitor are connected with a two-stage common-mode inductance circuit at a low voltage side.
  6. 6. The high power compressor of claim 5, wherein the three-phase half-bridge circuit is disposed on a circuit board, and each of the three phases of the three-phase half-bridge circuit includes 2 insulated gate bipolar transistors connected in series, the same routing is used on the circuit board, and the total length of the routing of each phase is the same.
  7. 7. The high power compressor of claim 6, wherein each of the three phases of the three-phase half-bridge circuit comprises 2 insulated gate bipolar transistors connected in series, and the insulated gate bipolar transistors are arranged on the upper end surface of the circuit board through aluminum nitride ceramic plates.
  8. 8. The high power compressor as claimed in claim 7, wherein a partial area of an upper end face of each of the three phases of the three-phase half-bridge circuit including 2 parallel insulated gate bipolar transistors is pressed by two pressing pins of the same pressing plate respectively to be fixedly connected to the aluminum nitride ceramic plate.
  9. 9. The high power compressor of claim 7, wherein the lower end surface of the circuit board is further provided with a plurality of heat dissipating fins, and wherein the plurality of heat dissipating fins are located below the three-phase half-bridge circuit.
  10. 10. A control method of a high power compressor, characterized by being applied to the high power compressor according to any one of claims 5 to 9, comprising: When a controller in the high-power compressor detects a drive control signal, a three-phase half-bridge drive circuit starting signal is generated and sent to the three-phase half-bridge drive circuit in the high-power compressor; The three-phase half-bridge driving circuit is correspondingly started according to the starting signal of the three-phase half-bridge driving circuit, generates a three-phase half-bridge driving signal and sends the three-phase half-bridge driving signal to a three-phase half-bridge circuit in the high-power compressor; The three-phase half-bridge circuit correspondingly drives a permanent magnet synchronous scroll compressor in the high-power compressor through a three-phase half-bridge circuit driving signal and a step-down voltage output by a direct current-direct current converter in the high-power compressor; And the permanent magnet synchronous scroll compressor correspondingly performs refrigeration according to preset refrigeration working parameters.

Description

High-power compressor driving circuit, high-power compressor and control method thereof The present application claims priority from China patent office, application number CN202510128388.1, entitled "high power compressor drive Circuit, high power compressor and method for controlling same", filed on App. No. 2025, 02 and 05, the entire contents of which are incorporated herein by reference. Technical Field The invention relates to the technical field of compressors, in particular to a high-power compressor driving circuit, a high-power compressor and a control method thereof. Background Permanent magnet synchronous motor compressor drives (i.e., PMSM compressor drives, PMSM is collectively referred to as PERMANENT MAGNET Synchronous Motor and represents a permanent magnet synchronous motor), which are small, lightweight, and efficient, and are themselves nonlinear, strongly coupled, and multivariable objects, permanent magnet synchronous motors are ideal driving options for practical production and applications, such as in the field of electric vehicles (EV, which is collectively referred to as ELECTRIC VEHICLE), due to their high torque density and fast response characteristics. In particular, in pure electric vehicles, new energy vehicle refrigeration equipment, i.e., a scroll PMSM compressor, is an important compressor type, which is commonly used to compress gas into high pressure gas or to extract low pressure gas. The scroll-type PMSM compressor adopts the characteristics of a turbine and a centrifugal machine, and can efficiently compress gas to required pressure or vacuum, so that the scroll-type PMSM compressor has wide application in air compressors. For example, scroll PMSM compressors are commonly used in the areas of manufacturers, auto repair plants, and construction sites, etc., to provide compressed air refrigeration to a plant or construction site. Currently, the compressor drivers used in common high power PMSM compressors are single tube driven, with a narrow operating temperature range, for example typically only between-20 ℃ and +60 ℃. If the operating environment temperature of a high power PMSM compressor is too high or too low, the overcurrent capability of the compressor driver drops dramatically, and the external electromagnetic interference becomes serious. Disclosure of Invention The embodiment of the invention provides a high-power compressor driving circuit, a high-power compressor and a control method thereof, and aims to solve the problems that in the prior art, a compressor driver adopted in a high-power PMSM compressor adopts single-tube driving, the working temperature range is narrow, if the working environment temperature is too high or too low, the overcurrent capacity of the compressor driver is rapidly reduced, and the external electromagnetic interference becomes serious. In a first aspect, the embodiment of the invention provides a high-power compressor driving circuit, which comprises a controller, a three-phase half-bridge driving circuit, a three-phase half-bridge circuit and a direct current-direct current converter, wherein the three-phase half-bridge driving circuit is connected with the controller, the three-phase half-bridge driving circuit is also connected with the three-phase half-bridge circuit, the direct current-direct current converter is connected with the controller and the three-phase half-bridge driving circuit, the three-phase half-bridge circuit comprises 12 insulated gate bipolar transistors, each phase of three phases of the three-phase half-bridge circuit comprises 4 insulated gate bipolar transistors, and the three-phase half-bridge circuit is used for driving a connected permanent magnet synchronous scroll compressor. In a second aspect, an embodiment of the present invention further provides a high-power compressor, which includes the high-power compressor driving circuit according to the first aspect, and further includes a permanent magnet synchronous scroll compressor, where a three-phase half-bridge circuit in the high-power compressor driving circuit is connected to the permanent magnet synchronous scroll compressor. In a third aspect, an embodiment of the present invention further provides a method for controlling a high-power compressor, which is applied to the high-power compressor according to the second aspect, where the method for controlling a high-power compressor includes: When a controller in the high-power compressor detects a drive control signal, a three-phase half-bridge drive circuit starting signal is generated and sent to the three-phase half-bridge drive circuit in the high-power compressor; The three-phase half-bridge driving circuit is correspondingly started according to the starting signal of the three-phase half-bridge driving circuit, generates a three-phase half-bridge driving signal and sends the three-phase half-bridge driving signal to a three-phase half-bridge circuit in the high-power compressor; The th