Boost converter state control

Patent metadata

Field	Value
Publication number	US-2023134793-A1
Application number	US-202217962004-A
Country	US
Kind code	A1
Filing date	Oct 7, 2022
Priority date	Oct 28, 2021
Publication date	May 4, 2023
Grant date	—

Abstract

Provided are embodiments for a system and method for controlling a boost control circuit. Embodiments include a power supply and a boost converter circuit coupled to the power supply, wherein the boost converter circuit is operable to provide power to the load. Embodiments also include a 3-phase inverter coupled to the boost converter, wherein the 3-phase-inverter is operable to provide a 3-phase output, and a controller coupled to the boost converter and the 3-phase inverter. The controller can be configured to receive a voltage level of a power supply and a voltage level of a 3-phase inverter; compare a power threshold to at least one of: the voltage level of the power supply and the voltage level of the 3-phase inverter; and control an operation of the boost converter circuit to operate in a boost mode or a rectification mode based at least in part on the comparison.

First claim

What is claimed is:

1 . A system for controlling a boost control circuit, the system comprising:
a power supply operable to supply power to a load; a boost converter circuit coupled to the power supply, wherein the boost converter circuit is operable to provide power to the load; a 3-phase inverter coupled to the boost converter circuit, wherein the 3-phase-inverter is operable to provide a 3-phase output; a controller coupled to the boost converter circuit and the 3-phase inverter, wherein the controller is further configured to:
receive a voltage level of a power supply and a voltage level of a 3-phase inverter;
compare a power threshold to at least one of: the voltage level of the power supply and the voltage level of the 3-phase inverter; and
control an operation of the boost converter circuit to operate in a boost mode or a rectification mode based at least in part on the comparison.

2 . The system of claim 1 , wherein the controller is further configured to operate the boost converter circuit in the boost mode when the voltage level of the power supply or the voltage level of the 3-phase inverter is greater than the power threshold.

3 . The system of claim 1 , wherein the controller is further configured to operate the boost converter circuit in the rectification mode when the voltage level of the power supply or the voltage level of the 3-phase inverter is less than the power threshold.

4 . The system of claim 1 , wherein the controller is further configured to compare the voltage level of the power supply to the voltage of the 3-phase inverter or a voltage level of the load.

5 . The system of claim 4 , wherein the controller is further configured to operate the boost converter circuit in the boost mode when the voltage level of the power supply is less than the voltage level of the 3-phase inverter or the voltage level of the load.

6 . The system of claim 4 , wherein the controller is further configured to operate the boost converter circuit in the rectification mode when the voltage level of the power supply is greater than the voltage level of the 3-phase inverter or the voltage level of the load.

7 . The system of claim 1 , further comprising a transformation module configured to transform an output of the 3-phase inverter to a synchronous frame voltage level.

8 . The system of claim 7 , wherein the transformation module performs an ABC-to-dq conversion.

9 . The system of claim 1 , wherein the power supply is a DC power supply.

10 . A method for controlling a boost converter circuit, the method comprising:
receiving, at a controller, a voltage level of a power supply and a voltage level of a 3-phase inverter; comparing a power threshold to at least one of: the voltage level of the power supply and the voltage level of the 3-phase inverter; and controlling an operation of the boost converter circuit to operate in a boost mode or a rectification mode based at least in part on the comparison.

11 . The method of claim 10 , wherein when the voltage level of the power supply or the voltage level of the 3-phase inverter is greater than the power threshold, the boost converter circuit is operated in the boost mode.

12 . The method of claim 10 , wherein when the voltage level of the power supply or the voltage level of the 3-phase inverter is less than the power threshold, the boost converter circuit is operated in the rectification mode.

13 . The method of claim 10 , wherein the comparison further comprises comparing the voltage level of the power supply to the voltage of the 3-phase inverter or a voltage level of a load.

14 . The method of claim 13 , wherein when the voltage level of the power supply is less than at least one of: the voltage level of the 3-phase inverter and the voltage level of the load, the boost converter circuit is operated in the boost mode.

15 . The method of claim 13 , wherein when the voltage level of the power supply is greater than at least one of: the voltage level of the 3-phase inverter and the voltage level of the load, the boost converter circuit is operated in the rectification mode.

16 . The method of claim 10 , further comprising transforming an output of the 3-phase inverter to a synchronous frame voltage level.

17 . The method of claim 16 , wherein the transformation is an ABC-to-dq conversion.

18 . The method of claim 10 , wherein the power supply is a direct current (DC) power supply.

Assignees

• Carrier Corp

Inventors

• Dotson Thomas
• Agirman Ismail

Classifications

• H02M1/007

  Plural converter units in cascade (push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826) · CPC title

• H02P29/027

  the fault being an over-current · CPC title

• H02M1/0032

  Control circuits allowing low power mode operation, e.g. in standby mode · CPC title

• H02P2201/00

  Indexing scheme relating to controlling arrangements characterised by the converter used · CPC title

• H02P29/028

  the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault · CPC title