CN208209806U - Power control system with ripple phase lock circuitry in digital charge machine - Google Patents
Power control system with ripple phase lock circuitry in digital charge machine Download PDFInfo
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- CN208209806U CN208209806U CN201820283478.3U CN201820283478U CN208209806U CN 208209806 U CN208209806 U CN 208209806U CN 201820283478 U CN201820283478 U CN 201820283478U CN 208209806 U CN208209806 U CN 208209806U
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Abstract
The utility model discloses the power control systems with ripple phase lock circuitry in a kind of digital charge machine, it is proposed it is a kind of achieve the purpose that inhibit ripple current, cost and volume are not only saved, the power control system with output ripple phase lock circuitry in the digital charge machine of properties of product and service life is also improved.It includes AC power source, uncontrollable rectifier circuit, Zero-cross comparator circuit, pulse-width signal capture circuit, single-chip microcontroller；Power supply signal is input to uncontrollable rectifier circuit by the AC power source, which converts direct current signal for AC signal and be input to Zero-cross comparator circuit；The Zero-cross comparator circuit is used to convert analog signal to digital signal and the signal is input to pulse-width signals to capture circuit；The pulse-width signal capture circuit does timing calculating for the period of pulse-width signal and duty ratio and digital signal is input to single-chip microcontroller.
Description
Technical field
A kind of power supply control the utility model relates to digital charge machine more particularly to digital charge machine with ripple phase lock circuitry
System processed.
Background technique
Currently, existing AC charging machine technical solution is all made of the front and back level structure of AC/DC-DC/DC, and inherent characteristic determines
2 times of low-frequency ripple disturbance quantities are certainly existed on its output end voltage, if this low-frequency ripple is not pocessed, will be led to
Later the transformation of grade DC-DC is embodied in final direct current output.If low-frequency ripple is larger, can generate biggish electric current or
The fluctuation of voltage.This will have an impact the work of battery management system (BMS) first, serious to charge normal.
Secondly, charging with the direct current of larger low-frequency ripple component to battery, the service life of battery can be reduced.
In order to reduce the ripple amplitude, traditional control strategy is that response is improved in rear class DC-DC closed-loop control system
Speed.But this mode can reduce system control bandwidth, when output loading disturbs, easily cause output it is unstable,
Even generate concussion.
Utility model content
The main purpose of the utility model is to overcome the deficiencies in the prior art, propose it is a kind of reach inhibit ripple current
Purpose, not only saves cost and volume, also improves band output ripple in the digital charge machine of properties of product and service life
The power control system of phase lock circuitry.
To achieve the goals above, the technical solution of the utility model is as follows:
Power control system with ripple phase lock circuitry in a kind of digital charge machine, including AC power source, uncontrollable rectifier electricity
Road, Zero-cross comparator circuit, pulse-width signal capture circuit, single-chip microcontroller；Power supply signal is input to not by the AC power source
Control rectifying circuit, the uncontrollable rectifier circuit convert direct current signal for AC signal and are input to Zero-cross comparator circuit；Described
Zero-cross comparator circuit is used to convert analog signal to digital signal and the signal is input to pulse-width signals to capture circuit；Institute
The pulse-width signal capture circuit stated does timing for the period of pulse-width signal and duty ratio and calculates and by digital signal
It is input to single-chip microcontroller.
The single-chip microcontroller includes pulse-width signal circuit, and the pulse-width signal circuit is for pulse-width signal
Period and duty ratio do timing calculating, obtain digital signal；Ripple frequency phase circuit, the ripple frequency phase circuit is based on
Calculate the frequency and phase of output ripple electric current；Compensation factor circuit obtains compensation factor for tabling look-up；Ripple compensation amount circuit,
For obtaining the compensation rate of ripple current；Closed control circuit is for obtaining closed-loop control amount；Sample circuit is used for output voltage
The sampling of current signal, filter circuit, for filtering circuit signal；
Direct current signal is input to by the Zero-cross comparator circuit by capture phase lock circuitry and pulse-width signal circuit
Ripple frequency phase circuit, the direct current signal which will acquire pass through ripple compensation amount circuit and output control
Circuit transmission processed is to exporting switch driving circuit；The sample circuit filters the signal of input by filter circuit；It is described
Filter circuit direct current signal is input to by filtered signal by compensation factor circuit and ripple compensation amount circuit all the way
Output control circuit；Direct current signal is passed through closed control circuit input to output control circuit by another way；Output control electricity
Road exports the signal of input to output switching drive signal；The output switch driving circuit is used to output control circuit is defeated
The signal entered carries out output switch control and enhanced processing.
The beneficial effects of the utility model are: 1), the utility model can be due to available output low frequency ripple compensation
Amount, compensation rate combine output loading factor, can adjust compensation amplitude accordingly according to payload size.It thus can be on-demand
Compensation, to inhibiting for output ripple；2), the utility model increases exchange input Zero-cross comparator circuit all the way, Ke Yigeng
Good inhibits ripple current, makes that ripple current effect is inhibited to reach more preferably；3) product cost, is reduced, and is improved
The Performance And Reliability of compensation circuit system.
Detailed description of the invention
Fig. 1 is the utility model embodiment system block diagram；
Fig. 2 is the SCM system block diagram of the utility model embodiment；
Fig. 3 is the utility model embodiment control method flow chart.
Specific embodiment
With reference to the accompanying drawing and the embodiments of the present invention are described in further detail utility model.
The utility model is not needing to increase hardware cost and volume, does not need to sacrifice rear class loop control response bandwidth yet
Under conditions of, realize effective inhibition to output low frequency ripple.According to output voltage, exports electric current and ripple amplitude fits
Three-dimensional matrice is tabled look-up, and a compensation factor is obtained.Compensation factor sinusoidal quantity corresponding with input voltage is multiplied again, obtains one
With the compensation rate of output current ripple same-phase.The compensation rate finally is subtracted in normal closed-loop control output quantity, to reach
Inhibit the effect of output current ripple to open loop.
Referring to Fig. 1, the power control system with ripple phase lock circuitry in the digital charge machine, including AC power source 1, it does not control
Rectification circuit 2, Zero-cross comparator circuit 3, pulse-width signal capture circuit 4, single-chip microcontroller 5；The AC power source 1 believes power supply
Number it is input to uncontrollable rectifier circuit 2, which converts direct current signal for AC signal and be input to Zero-cross comparator
Circuit 3；The Zero-cross comparator circuit 3 is used to convert digital signal for analog signal and the signal is input to pulsewidth modulation letters
Number (PWM) captures circuit 4；Period and duty of pulse-width signal (PWM) the capture circuit 4 for pulse-width signal
Than doing timing calculating and digital signal being input to single-chip microcontroller 5.
Referring to Fig. 2, the single-chip microcontroller 5 includes pulse-width signal circuit 51, which is used for
The period of pulse-width signal and duty ratio do timing calculating, obtain digital signal；Ripple frequency phase circuit 52, ripple frequency
Rate phase circuit 52 is used to calculate the frequency and phase of output ripple electric current；Compensation factor circuit 55, is compensated for tabling look-up
Factor；Ripple compensation amount circuit 56, for obtaining the compensation rate of ripple current；Closed control circuit 57 is for obtaining closed-loop control
Amount；Sample circuit 53, for the sampling of output voltage current signal, filter circuit 54, for filtering circuit signal；
Direct current signal is passed through capture phase lock circuitry 4 and pulse-width signal circuit (PWM) by the Zero-cross comparator circuit 3
51 are input to ripple frequency phase circuit 52, and the direct current signal which will acquire passes through ripple compensation amount
Circuit 56 and output control circuit 58 are transmitted to output switch driving circuit 6；The sample circuit 53 leads to the signal of input
Cross the filtering of filter circuit 54；Direct current signal is wherein passed through compensation factor all the way by filtered signal by the filter circuit 54
56 input to output control circuit 58 of circuit 55 and ripple compensation amount circuit；Direct current signal is passed through closed control circuit by another way
57 input to output control circuits 58；The output control circuit 58 exports the signal of input to output switching drive signal 6；It should
Switch driving circuit 6 is exported, the signal for inputting output control circuit carries out output switch control and enhanced processing.
Referring to Fig. 3, the utility model embodiment controls the power-supply system side with output ripple control in the digital charge machine
Method mainly includes the following steps:
Step 1) starts S1；
Step 2) power-on self-test and initialization S2；
Step 3), which judges whether there is pulse-width signal (PWM) capture and interrupts, occurs S3；If pulse-width signal captures
It interrupts and occurs, then, into next step；If do not have pulse-width signal capture interrupt, by calculating ripple frequency and
Phase S31 enters comprehensive ripple frequency and phase obtains compensation rate S7；
Step 4) judges no Interruption S4；If normal, into next step；If abnormal, it is directly entered
Comprehensive ripple frequency and phase obtain compensation rate S7；
The control of step 5) normal closed loop calculates S5；
Step 6) tables look-up to obtain penalty coefficient S6 according to voltage and current；
The comprehensive ripple frequency of step 7) and phase obtain compensation rate S7；
Compensation rate is superimposed upon S8 in reality output control amount by step 8)；
Step 9) is internally integrated pulse-width signal (PWM) circuit using single-chip microcontroller and generates driving signal S9；Complete the step
After rapid, and enter power-on self-test and capturing unit initialization step S2, iterative motion.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (1)
1. the power control system with ripple phase lock circuitry in a kind of digital charge machine, it is characterised in that: including AC power source, no
Control rectifying circuit, Zero-cross comparator circuit, pulse-width signal capture circuit, single-chip microcontroller；The AC power source is by power supply signal
It is input to uncontrollable rectifier circuit, which converts direct current signal for AC signal and be input to Zero-cross comparator electricity
Road；The Zero-cross comparator circuit is used to convert digital signal for analog signal and the signal is input to pulse-width signals to catch
Obtain circuit；The described pulse-width signal capture circuit for the period of pulse-width signal and duty ratio do timing calculate and incite somebody to action
Digital signal is input to single-chip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820283478.3U CN208209806U (en) | 2018-02-28 | 2018-02-28 | Power control system with ripple phase lock circuitry in digital charge machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820283478.3U CN208209806U (en) | 2018-02-28 | 2018-02-28 | Power control system with ripple phase lock circuitry in digital charge machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208209806U true CN208209806U (en) | 2018-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820283478.3U Expired - Fee Related CN208209806U (en) | 2018-02-28 | 2018-02-28 | Power control system with ripple phase lock circuitry in digital charge machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208209806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242828A (en) * | 2020-09-11 | 2021-01-19 | 深圳市杉川机器人有限公司 | Method, device and equipment for capturing pulse width modulation signal |
-
2018
- 2018-02-28 CN CN201820283478.3U patent/CN208209806U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242828A (en) * | 2020-09-11 | 2021-01-19 | 深圳市杉川机器人有限公司 | Method, device and equipment for capturing pulse width modulation signal |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181207 Termination date: 20210228 |