Controller, apparatus, and method for controlling a DC fast charging device

Abstract

The present invention is entitled "Controller, Apparatus, and Method for Controlling a DC Fast Charging Device." Various disclosed embodiments include exemplary controller modules, DC fast charging devices, and methods. In an exemplary embodiment, a controller module for a DC-DC converter includes a controller and a computer-readable medium configured to store computer-executable instructions configured to cause the controller to receive an input voltage V from the DC-DC converter. in Receives the output DC voltage V from the DC-DC converter o In response to the received input voltage V in and output voltage V o The system generates control signals and outputs these control signals to the DC-DC converter.

Description

Technical Field

[0001] This disclosure relates to electric vehicle charging systems. The statements in this section are provided only as background information in connection with this disclosure and do not constitute prior art. Background Technology

[0002] A typical DC-DC fast charging (DCFC) power conversion unit (PCU) includes an AC-DC converter, an isolated DC-DC converter, a sensing system (with a current sensor), and a controller. The controller uses the sensed current value I sensed by the current sensor at the output of the DC-DC converter. o and I batt Input voltage V of isolated DC-DC converter in and the output voltage V of the DC-DC converter o Improve the dynamic performance of DC-DC converters under varying load / battery conditions. Summary of the Invention

[0003] Various publicly available implementations include exemplary controller modules, DC fast charging devices, and methods.

[0004] In an exemplary embodiment, a controller module for a DC-DC converter includes a controller and a computer-readable medium configured to store computer-executable instructions configured to cause the controller to receive an input voltage V from the DC-DC converter. in Receives the output DC voltage V from the DC-DC converter o In response to the received input voltage V in and output voltage V o The system generates a control signal and outputs the generated control signal (CS) to the DC-DC converter.

[0005] In another exemplary embodiment, the DC fast charging device includes an AC-DC converter configured to generate an input DC voltage V in response to a received mains AC voltage. in A DC-DC converter configured to respond to the input voltage V in Generate output DC voltage V o ; and a controller module configured to respond to the input voltage V in and output voltage V o Generate control signals for the DC-DC converter.

[0006] In another exemplary embodiment, the method includes: receiving the input voltage V of the DC-DC converter. in; Receive the output voltage V of the DC-DC converter o ; in response to the received input voltage V in and the output voltage V o The system generates control signals and outputs these generated control signals to the DC-DC converter.

[0007] The above description of the invention is merely illustrative and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, other aspects, embodiments, and features will become apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0008] Exemplary embodiments are shown in the accompanying drawings. The embodiments and drawings disclosed herein are intended to be illustrative and not restrictive.

[0009] Figure 1 It is a block diagram in the form of a partial schematic diagram of an exemplary DC charging unit.

[0010] Figure 2 yes Figure 1 A block diagram of the components of the power conversion unit of the DC charging unit.

[0011] Figure 3 It is included Figure 2 A block diagram of the components in the power conversion unit.

[0012] Figure 4 It is by Figure 2 The control diagram shows the voltage-mode control function executed by the controller.

[0013] Figure 5 It is by Figure 2 The control diagram shows the current-mode control function performed by the controller.

[0014] Figure 6 It is by Figure 2 A diagram of the control signals generated by the power conversion unit.

[0015] Figure 7 This is a flowchart illustrating an exemplary method for generating control signals for a power converter.

[0016] Figure 8 yes Figure 7 A flowchart detailing the method.

[0017] The same reference symbols in various diagrams generally indicate the same elements. Detailed Implementation

[0018] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description. In the drawings, like reference numerals generally identify like parts unless the context otherwise indicates. The exemplary embodiments described in the detailed description, drawings, and claims are not intended to be limiting. Other embodiments may be utilized and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0019] Various publicly available implementations include exemplary controller modules, DC fast charging (DCFC) devices, and methods.

[0020] refer to Figure 1 Provided in an outline manner, in various embodiments, the exemplary DC fast charging (DCFC) unit 20 is connected to an AC grid power source and includes a connector 24 for attaching to an input port on an electric vehicle (EV) (not shown) or equivalent battery load device. Those skilled in the art will understand that the power source can provide electrical power from a variety of different devices, such as wind turbines, solar cells, geothermal energy, or any mechanism capable of generating electrical power. The internal electronics of the DCFC unit 20 include an AC-DC converter 26, a DC-DC converter 28 (such as an isolated DC-DC converter), a controller module 30, and a communication unit 32. The AC-DC converter 26 receives AC power from the grid power source and converts the AC power into DC power, which is delivered as input to the DC-DC converter 28.

[0021] For further reference Figure 2 In various embodiments, the controller module 30 includes a power converter controller (PCC) 34 and a memory (i.e., a computer-readable medium) 36 configured to store instructions. When the stored instructions are executed by the PCC 34, the PCC 34 receives command information from the connected EV and generates control signals for the AC-DC converter 26 and / or the DC-DC converter 28 to provide regulated DC power for charging the EV's battery. It should be understood that in various embodiments, the PCC 34 generates control signals (as is required in currently known systems) without using a current sensor to determine the current value of the electrical power output by the DC-DC converter 28. Instead of measuring the current with a sensor, in various embodiments, the PCC 34, upon executing additional instructions stored in the memory 36, estimates an output current value associated with the DC voltage output by the DC-DC converter 28 in response to the voltage output by the DC-DC converter 28 and the received command information.

[0022] Continuing in this manner and in summary, in various embodiments, the controller module 30 for the DC-DC converter 28 includes a PCC 34 and a computer-readable medium 36 configured to store computer-executable instructions configured to cause the PCC 34 to receive the input voltage V of the DC-DC converter 28. in Receives output DC voltage V from DC-DC converter 28 o In response to the received input voltage V in and output voltage V o Instead of using a current sensor, a control signal is generated and output to the DC-DC converter 28.

[0023] It should be understood that the PCC 34 can be any type of controller desired for a particular application, such as, but not limited to, a microcontroller. In various embodiments, the PCC 34 may include one or more general-purpose or special-purpose processors, such as: a microprocessor; a central processing unit (CPU); a digital signal processor (DSP); a custom processor, such as a network processor (NP) or network processing unit (NPU), a graphics processing unit (GPU), etc.; a field-programmable gate array (FPGA); etc., and a uniquely stored set of program instructions (including both software and firmware) for controlling it to implement some, most, or all of the functions of the methods and / or systems described herein in conjunction with some non-processor circuitry. In some embodiments, some or all of the functions may be implemented by a state machine without stored program instructions or in one or more application-specific integrated circuits (ASICs), wherein each function or some combination of functions is implemented as custom logic or circuitry. It should be understood that combinations of the above methods may be used. For some embodiments described herein, a corresponding device in hardware and optionally having software, firmware, and combinations thereof may be referred to as “a controller configured to perform a set of operations, steps, methods, processes, algorithms, functions, techniques, etc., on digital and / or analog signals as described herein for various embodiments.”

[0024] As described above, various embodiments include a non-transitory computer-readable storage medium 36 having computer-readable code (instructions) stored thereon to cause PCC 34 to perform the functions described and claimed herein. Examples of such computer-readable storage media include, but are not limited to, hard disks, optical storage devices, magnetic storage devices, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, etc. When stored in a non-transitory computer-readable medium, software may include instructions executable by PCC 34 that, in response to such execution, cause the performance of a set of operations, steps, methods, processes, algorithms, functions, techniques, etc., as described herein with respect to various embodiments.

[0025] The following text is for reference only. Figures 2 to 8 The operation of PCC 34 is described in more detail.

[0026] like Figure 2 As shown, in various implementations, the AC-DC converter 26 generates the input DC voltage V. in The DC-DC converter 28 receives the input DC voltage V. in And generate output DC voltage V o Used for delivering battery loads to EVs. Communication unit 32 ( Figure 1 The EV receives a requested power or charge value from the EV. The EV determines the power value required to effectively charge the EV battery load. The EV sends the determined power value to the communication unit 32, such as via connector 24 or wirelessly via a communication protocol.

[0027] In various implementations, the power converter controller (PCC) 34 receives the input DC voltage V. in Value, output DC voltage V o The value and the requested power value. As will be explained below, in response to the received output DC voltage V o The PCC 34 determines an estimated output current without using a current sensor by using the value of V and the current value associated with the requested power value. The PCC 34 responds to V in The value, the requested power value, and the estimated output current are used to generate the control signal CS for the DC-DC converter 28.

[0028] For further reference Figure 3 In various implementations, the control signal CS may include various switches S within the DC-DC converter 28. 1-8 Received control signal CS 1-8 Control signal CS 1-8 Control switch S 1-4 and switch S 5-8The phase shift between them. The resulting switch S 1-8 The operation generates an output charge value, which uses only the output voltage V. o The value is adjusted for possible battery current. Used for switch S. 1-8 Indicative control signal CS 1-8 In the following Figure 6 It is shown in more detail below.

[0029] For further reference Figure 4 In various implementations, the PCC 34 is configured to perform voltage-mode control in response to various commands. In various implementations and as... Figure 4 As shown, the voltage mode control function can be executed by software and / or firmware as needed. In various implementations, the requested voltage V* value and the output DC voltage V (from the DC-DC converter 28) are... o The values ​​are input to mixer 40. Mixer 40 determines the requested voltages V* and V. o The difference (error) between values ​​produces ΔV o Value. Output of mixer 40 (ΔV) o The value is input to a proportional-integral (PI) 42 to generate a determined requested current I*. The output (I*) of PI 42 is fed to a mixer 46, which estimates the load current feedforward value (If). batt,ff The estimated load current feedforward value I is fed to mixer 46. batt,ff Generated by the current disturbance observer (CDO) 50. The CDO 50 receives the output DC voltage V from the DC-DC converter 28. o The value and the output from mixer 46 are used as inputs. Those skilled in the art will understand that CDO 50 is a specific application for interference observers or feedback controllers. The operation of CDO 50 is described in more detail below. The output of mixer 46 is the reference current I. ref The reference current is fed back to CDO 50 and sent to PI 48. PI 48 generates a phase angle change Δθ. The phase angle change Δθ is fed to mixer 52, and the value θ* is also fed to mixer 52. This value θ* is generated by transformation table 56 (such as a lookup table). Communication unit 32 ( Figure 1 Receive the requested power P* from the connected EV and apply the requested power P* to conversion table 56. Input DC voltage V in The value is passed through low-pass filter 60 and applied to conversion table 56. (Output DC voltage V from DC-DC converter 28) o The value is passed through low-pass filter 62 and applied to conversion table 56. Conversion table 56 outputs DC voltage V based on the requested power (P*) value. o Value and input DC voltage V inThe value θ* is determined. The value θ is output from mixer 52. This value θ is the control signal CS. 1-4 and control signal CS 5-8 The phase shift between them. This phase shift produces the desired charging current i. batt This value θ is modulated by modulator 58 to generate control signal CS for DC-DC converter 28. 1-8 .

[0030] Now for reference Figure 5 In various implementations, the PCC 34 is configured to perform current-mode control in response to various commands. For example... Figure 5 As shown, the current-mode control function can be executed by software and / or firmware as needed. In various implementations, the requested current I* is received from the communication unit 32 ( Figure 1 The estimated load current feedforward value (I) is received and fed to mixer 46. batt,ff The estimated load current feedforward value I is fed to mixer 46. batt,ff Generated by CDO 50. CDO 50 receives the output DC voltage V from DC-DC converter 28. o The value and the output from mixer 46 are used as inputs. The output of mixer 46 is the reference current I. ref The reference current is fed back to CDO 50 and sent to PI 48. PI 48 generates a phase angle change Δθ. The phase angle change Δθ is fed to mixer 52, and the value θ* is also fed to mixer 52. This value θ* is generated by conversion table 56. Communication unit 32 ( Figure 1 Receive the requested power P* from the connected EV and apply the requested power P* to conversion table 56. Input DC voltage V in The value is passed through low-pass filter 56 and applied to conversion table 56. (Output DC voltage V from DC-DC converter 28) o The value is passed through low-pass filter 62 and applied to conversion table 56. Conversion table 56 outputs DC voltage V based on the requested power (P*) value. o Value and input DC voltage V in The value θ* is determined. The value θ is output from mixer 52 and modulated by modulator 58 to generate a control signal CS for DC-DC converter 28. 1-8 .

[0031] In various implementation schemes, the estimated load current feedforward value I batt,ff To improve the dynamic response of the DC-DC converter 28 to load disturbances / battery current variations:

[0032]

[0033] Where C oIt is the output capacitor value, i o It is the output current before the output filter capacitor, i batt This is the current after the filter capacitor.

[0034] Output voltage V o The disturbance can reflect the estimated load current feedforward value I. batt,ff Changes

[0035] i batt,ff (j)=z(j)-lV0(j)

[0036] Note that I and i can be used interchangeably to represent the same parameter.

[0037] In this way, the sensed output voltage V o It can be used to regulate the output charging current through a CDO 50 tuned control loop. Based on the principle of the current disturbance observer and discrete control law, i batt,ff (j) can be accessed via i ref (j-1), V o The relationship between the internal state variable z(j-1) and the convergence rate l is described as follows:

[0038]

[0039] Where z is the internal state variable of CDO 50, l is a parameter related to the convergence rate, which is a value tuned during testing, and C o It is a fixed value associated with DC-DC converter 28, j is the time value, and T s It is the switching cycle of the DC-DC converter.

[0040] For further reference Figure 6 In various implementation schemes, the value of θ is the control signal CS. 1-4 and control signal CS 5-8 The phase shift between them. This phase shift produces the desired charging current i. batt .

[0041] See now Figure 7 In various embodiments, an exemplary method 70 is provided for the controller of a DC-DC converter. It should be understood that in some embodiments, method 70 may be adapted to be executed by a controller module and / or a power converter controller executing instructions stored in memory. At block 72, the controller receives the input voltage and output voltage of the DC-DC converter. At block 74, a control signal is generated in response to the received input and output voltages of the DC-DC converter. Reference is made below. Figure 8 The generation of the control signal is described in more detail. At box 76, the generated control signal is output to the DC-DC converter.

[0042] For further reference Figure 8 In various implementation schemes, exemplary methods are... Figure 7 The process performed at block 74 is extended. At block 78, a requested power value, such as a requested current value (current-mode control) or a requested voltage value (voltage-mode control), is received from a load device such as an EV. In some such embodiments, the requested current value is determined based on the received requested voltage value (voltage-mode control). In various embodiments, in voltage-mode control, an angle θ (θ) is tuned to control the output voltage, and in current-mode control, an angle θ (θ) is tuned to control the output current. At block 80, an estimated battery current value is generated in response to the output voltage of the DC-DC converter and the received requested current value (current-mode control) or the requested current value determined based on the received requested voltage value (voltage-mode control). At block 82, a control signal is generated in response to the combination of the received input and output voltages of the DC-DC converter and the requested current value and the estimated battery current value.

[0043] In some embodiments, generating a control signal at block 82 may include receiving a requested charge value from a load device (such as an EV), such as a received requested current value or a requested voltage value. In some such embodiments, generating a control signal at block 82 may include determining a requested current value based on a received requested voltage value.

[0044] In some embodiments, generating the control signal at block 82 may include generating an estimated battery current value in response to the output voltage of the DC-DC converter and a requested current value (such as a received requested current value or a determined requested current value). In some such embodiments, generating the control signal at block 82 may include generating a current reference value by combining the requested current value with the estimated battery current value.

[0045] In some embodiments, generating the control signal at block 82 may further include generating a phase angle change based on a current reference value. In some such embodiments, generating the control signal at block 82 may further include responding to a received input voltage V. in Output voltage V o The control signal phase shift is generated based on the power requested and received. In some such embodiments, generating the control signal at block 82 may further include combining a change in phase angle with the control signal phase shift.

[0046] In some implementations, an input voltage can be generated at an AC-DC converter in response to a received mains AC voltage, and an output voltage can be sensed at a DC-DC converter.

[0047] Those skilled in the art will recognize that at least a portion of the controllers, devices, units, and / or processes described herein can be integrated into a data processing system. Those skilled in the art will recognize that a data processing system typically includes one or more of the following: a system unit housing, a video display device, memory (such as volatile or non-volatile memory), a processor (such as a microprocessor or digital signal processor), a computing entity (such as an operating system), drivers, a graphical user interface and applications, one or more interactive devices (e.g., a touchpad, a touchscreen, an antenna, etc.), and / or a control system including feedback loops and control motors (e.g., feedback for sensing position and / or speed; control motors for moving and / or adjusting components and / or quantities). The data processing system can be implemented using suitable commercially available components, such as those typically found in data computing / communication and / or network computing / communication systems.

[0048] As used in the preceding / following disclosures, the term "controller" can refer to a collection of one or more components arranged in a particular manner, or a collection of one or more general components that can be configured to operate in a particular manner at one or more specific points in time and / or also configured to operate in one or more other manners at one or more additional times. For example, the same hardware or the same parts of hardware can be configured / reconfigured sequentially / in parallel to a first type of controller (e.g., at a first time), a second type of controller (e.g., at a second time, which in some cases may coincide with, overlap with, or follow the first time), and / or a third type of controller (e.g., at a third time, which in some cases may coincide with, overlap with, or follow the first and / or second times), etc. Reconfigurable and / or controllable components (e.g., general-purpose processors, digital signal processors, field-programmable gate arrays, etc.) can be configured as a first controller with a first purpose, then as a second controller with a second purpose, then as a third controller with a third purpose, etc. The transformation of reconfigurable and / or controllable components can occur in as little as a few nanoseconds, or over a period of time, such as minutes, hours, or days.

[0049] In some such examples, when a controller is configured to perform a secondary purpose, it may no longer be able to perform that primary purpose until it is reconfigured. The controller can switch between configurations as different parts / modules within nanoseconds. The controller can be reconfigured dynamically; for example, a reconfiguration from a first controller to a second controller may occur precisely when the second controller is needed. The controller can be reconfigured in stages; for example, portions of the first controller that are no longer needed may be reconfigured into the second controller, even before the first controller has completed its operation. Such reconfiguration may occur automatically or through prompting from an external source, whether that source is another part, instruction, signal, condition, external stimulus, or similar.

[0050] For example, the central processing unit of a controller can operate at various times as a component / module for displaying graphics on a screen, for writing data to a storage medium, for receiving user input, and for multiplying by two large prime numbers, by configuring its logic gates according to its instructions. Such reconfiguration may be invisible to the naked eye and in some implementations may include activation, deactivation, and / or rerouting of various parts of a component (e.g., switches, logic gates, inputs, and / or outputs). Therefore, in the examples present in the preceding / following disclosures, if the example includes or describes multiple components / modules, the example includes the possibility that the same hardware can implement more than one of the described components / modules simultaneously or in discrete times or timing sequences. Whether more components / modules, fewer components / modules, or the same number of components / modules are used, the implementation of multiple components / modules is merely an implementation choice and generally does not affect the operation of the components / modules themselves. Therefore, it should be understood that any description of multiple discrete components / modules in this disclosure includes implementing such components / modules as any number of underlying components / modules, including but not limited to a single component / module that reconfigures itself over time to perform the functions of multiple components / modules and / or multiple components / modules that are similarly reconfigured, and / or dedicated reconfigurable components / modules.

[0051] In some cases, one or more components may be referred to herein as “configured to,” “configured by,” “configurable to,” “operable / operating as,” “suitable / adaptable to,” “capable of,” “adaptable to,” etc. Those skilled in the art will recognize that, unless the context otherwise requires, such terms (e.g., “configured to”) generally cover active state components and / or passive state components and / or standby state components.

[0052] While specific aspects of the subject matter described herein have been shown and described, it will be apparent to those skilled in the art that changes and modifications may be made based on the teachings herein without departing from the subject matter and its broader aspects, and therefore the appended claims cover all such changes and modifications within their scope, as is the true spirit and scope of the subject matter described herein. Those skilled in the art will understand that, in general, the terminology used herein, particularly in the appended claims (e.g., the body of the appended claims), is intended to denote “open-ended” terms (e.g., the term “comprising” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “at least having,” the term “including” should be interpreted as “comprising but not limited to,” etc.). Those skilled in the art will further understand that if a class intent is a specific number of introduced claim statements, such intent will be explicitly stated in the claims, and if no such statement is present, such intent does not exist. For example, to aid understanding, the following appended claims may contain the use of the introductory phrases “at least one” and “one or more” to introduce claim statements. However, the use of such phrases should not be construed as implying that introducing a claim statement with the indefinite article "a" or "an" limits any particular claim containing such an introduced claim statement to a claim containing only one such statement, even when the same claim includes the introductory phrase "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and / or "an" should generally be interpreted as meaning "at least one" or "one or more"); the same applies to the use of definite articles used to introduce a claim statement. Furthermore, even when a specific number of introduced claim statements are explicitly stated, those skilled in the art will recognize that such a statement should generally be interpreted as meaning at least the number stated (e.g., simply stating "two statements" without further modification generally means at least two statements, or two or more statements). Furthermore, in cases where conventions such as "at least one of A, B, and C" are used, generally speaking, such a construction is intended to mean that a person skilled in the art will understand that the convention (e.g., "a system having at least one of A, B, and C" will include, but is not limited to, systems having only A, having only B, having only C, having A and B, having A and C, having B and C, and / or A, B, and C, etc.). A person skilled in the art will further understand that, unless the context otherwise requires, extractive terms and / or phrases that typically present two or more alternative terms (whether in the specification, claims, or drawings) should be understood to contemplate the possibility of including one, any, or both of the terms. For example, the phrase "A or B" will generally be understood to include the possibility of "A" or "B" or "A and B".

[0053] The specific embodiments described above have illustrated various implementations of the apparatus and / or processes using block diagrams, flowcharts, and / or examples. Where such block diagrams, flowcharts, and / or examples contain one or more functions and / or operations, those skilled in the art will understand that each function and / or operation within such block diagrams, flowcharts, or examples can be implemented individually and / or collectively by a wide range of hardware, software (e.g., high-level computer programs used as hardware specifications), firmware, or virtually any combination thereof, limited to the patentable subject matter under 35U.SC101. In embodiments, certain portions of the subject matter described herein may be implemented via application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), digital signal processors (DSPs), or other integration formats. However, those skilled in the art will recognize that some aspects of the embodiments disclosed herein can be implemented, in whole or in part, equivalently in an integrated circuit as one or more computer programs (e.g., one or more programs running on one or more computer systems), one or more programs (e.g., one or more programs running on one or more microprocessors), firmware, or virtually any combination thereof, running on one or more computers, limited to the subject matter patented under 35U.SC101, and that designing circuits and / or writing code for software (e.g., high-level computer programs used as hardware specifications) and / or firmware according to this disclosure will be entirely within the skill of those skilled in the art. Furthermore, those skilled in the art will understand that the mechanisms of the subject matter described herein are capable of being distributed as program products in a variety of forms, and that the exemplary embodiments of the subject matter described herein apply regardless of the specific type of signal-bearing medium used for actual distribution. Examples of signal-carrying media include, but are not limited to, the following: recordable media, such as floppy disks, hard disks, optical discs (CDs), digital video discs (DVDs), digital tapes, computer memory, etc.; and transmission media, such as digital and / or analog communication media (e.g., fiber optic cables, waveguides, wired communication links, wireless communication links (e.g., transmitters, receivers, transmission logic, receiving logic, etc.) etc.).

[0054] With respect to the appended claims, those skilled in the art will understand that the operations enumerated herein can generally be performed in any order. Furthermore, although the various operational flows are presented sequentially, it should be understood that the various operations can be performed in any order other than that shown, or can be performed simultaneously. Unless the context otherwise requires, examples of such alternative orderings may include overlapping, interleaving, interruption, reordering, ascending, preparatory, supplementary, simultaneous, reverse, or other variations of ordering. Moreover, unless the context otherwise requires, terms such as “in response to,” “related to,” or other past tense adjectives are generally not intended to exclude such variations.

[0055] Although the subject matter disclosed herein has been described with reference to exemplary embodiments, those skilled in the art will understand that various modifications may be made to the subject matter without departing from the scope of the claimed subject matter set forth in the claims.

Claims

1. A controller module for a DC-DC converter, the controller module comprising: Controller; and A computer-readable medium configured to store computer-executable instructions configured to cause the controller to: Received input voltage V from the DC-DC converter in ; Receives the output voltage V from the DC-DC converter o ; In response to the received input voltage V in and output voltage V o And generate control signals; and The generated control signal is output to the DC-DC converter. The computer-readable medium is further configured to store computer-executable instructions configured to cause the controller to: An estimated battery current value is generated in response to the output voltage Vo and the requested current value selected from the received requested current value and the requested current value determined based on the requested voltage value. as well as The control signal is further generated in response to the estimated battery current value, and The computer-readable medium is further configured to store computer-executable instructions configured to cause the controller to generate a current reference value by combining the requested current value with the estimated battery current value.

2. The controller module of claim 1, wherein the computer-readable medium is further configured to store computer-executable instructions configured to cause the controller to generate a phase angle change based on the current reference value.

3. The controller module of claim 2, wherein the computer-readable medium is further configured to store computer-executable instructions configured to cause the controller to respond to the received input voltage V. in The output voltage V o The control signal phase shift is generated based on the power of the received request.

4. The controller module of claim 3, wherein the computer-readable medium is further configured to store computer-executable instructions configured to cause the controller to combine the change in the phase angle with a phase shift of the control signal.

5. A DC fast charging (DCFC) unit, the DC fast charging (DCFC) unit comprising: An AC-DC converter configured to generate an input voltage V in response to a received mains AC voltage. in ; A DC-DC converter, the DC-DC converter being configured to respond to the input voltage V in Generate output voltage V o ; A communication unit configured to receive a requested power value from an electric vehicle, the requested power value including a value selected from a requested voltage value and a requested current value; and A controller module, the controller module being configured to respond to the input voltage V in and output voltage V o Generate control signals for the DC-DC converter, wherein the controller module includes: Controller; and A computer-readable medium configured to store computer-executable instructions configured to cause the controller to: Receive the input voltage V in ; Receive the output voltage V o ; Receive the requested power value from the communication unit; In response to the received input voltage V in The output voltage V o The control signal is generated based on the requested power value; and The generated control signal is output to the DC-DC converter. The computer-readable medium is further configured to store computer-executable instructions configured to cause the controller to: An estimated battery current value is generated in response to the output voltage Vo and the requested current value selected from the received requested current value and the requested current value determined based on the requested voltage value; and The control signal is generated in response to the estimated battery current value, and The computer-readable medium is further configured to store computer-executable instructions configured to cause the controller to generate a current reference value by combining the requested current value with the estimated battery current value.

6. The DC fast charging (DCFC) unit of claim 5, wherein the computer-readable medium is further configured to store computer-executable instructions configured to cause the controller to: The phase angle change is generated based on the current reference value; and In response to the received input voltage V in The output voltage V o The control signal phase shift is generated based on the power of the received request.

7. The DC fast charging (DCFC) unit of claim 6, wherein the computer-readable medium is further configured to store computer-executable instructions configured to cause the controller to combine the change in the phase angle with a phase shift of the control signal.

8. A method for controlling a DC-DC converter, the method comprising: Received input voltage V from the DC-DC converter in ; Receives the output voltage V from the DC-DC converter o ; In response to the received input voltage V in and the output voltage V o And generate control signals; and The generated control signal is output to the DC-DC converter. The generation of the control signal includes receiving a requested power value selected from a requested current value and a requested voltage value from the load device. The generation of the control signal further includes generating an estimated battery current value in response to the output voltage of the DC-DC converter and a requested current value received and selected from the requested current values ​​determined based on the received requested voltage value. Generating the control signal further includes generating a current reference value by combining the requested current value with the estimated battery current value.

9. The method of claim 8, wherein generating the control signal further comprises generating a change in the phase angle based on the current reference value.

10. The method of claim 9, wherein generating the control signal further comprises generating a control signal phase shift in response to the received input voltage Vin, the output voltage Vo, and the received requested power.

11. The method of claim 10, wherein generating the control signal further comprises combining the change in the phase angle with a phase shift of the control signal.

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