CN221863115U - An electronic ballast for high intensity gas lamps - Google Patents

Abstract

The utility model relates to an electronic ballast for a high intensity gas lamp, comprising: the system comprises an alternating current power supply input module, a filtering rectification module, an APFC power factor correction module, a full-bridge inversion module, an LC resonance amplifying circuit module, a gas lamp module, a circuit protection module, a current conditioning module, an output voltage sampling resistor module, an auxiliary power supply module, a driving circuit, an MCU control circuit and a wireless transmission module. The beneficial effects of the utility model are as follows: the electronic ballast adopts a two-section structure, compared with a three-section structure, the number of parts is reduced, and the circuit structure is simplified; compared with the control by using a pure analog chip, the MCU control is adopted, so that the control design is more flexible and the applicability is higher; the protection circuit is arranged to prevent the circuit from working for a long time under an abnormal state; simple structure, smaller volume, lower cost, better adaptability, stable light emission and reduced ballast cost.

Description

An electronic ballast for high intensity gas lamps

Technical Field

The utility model belongs to the technical field of electronic ballasts, and in particular relates to an electronic ballast used for a high-intensity gas lamp.

Background Art

In recent years, light-emitting diodes (LEDs) have achieved vigorous development due to their advantages of high energy saving and long life. However, in some specific lighting occasions, high-intensity discharge (HID) lamps are still widely used due to their high luminous efficiency, good color rendering and other excellent performance. For example, in the application of stage lights, most of the existing high-power stage lights use high-intensity gas lamps. The discharge characteristics of high-intensity gas lamps are complex and have a negative resistance effect. During use, a ballast needs to be connected in series to keep the lamp in a stable working state during use, ensure lighting effects and efficiency, and achieve green lighting. At present, the ballasts connected in series with high-intensity gas lamps include inductive ballasts and electronic ballasts.

Traditional inductive ballasts are composed of inductive coils, which stabilize the current in the circuit through self-inductance; however, traditional inductive ballasts still have the following disadvantages:

Lack of corresponding power factor correction, low power factor, will increase the burden on the power grid and cause serious pollution during use;

The inductor coil is large, and generates a lot of noise under the action of electromagnetic field force;

There is no constant power measure and the lighting is unstable.

Electronic ballasts are divided into those that use pure analog circuits and those that are composed of analog plus digital circuits. Pure analog circuits are constructed through analog components and integrated chips. In terms of intelligent control, analog circuits are more complex than digital control circuits. After long-term use, there are influences such as component aging and parameter deviation from ideal values, which may lead to unstable ballast control. Not only is the cost high, but the structure is complex and the adaptability is relatively poor.

Utility Model Content

The utility model aims to overcome the deficiencies in the prior art and provide an electronic ballast for a high-intensity gas lamp.

This electronic ballast for high-intensity gas lamps, electrically connected to the terminal, includes: an AC power input module, a filter rectifier module, an APFC power factor correction module, a full-bridge inverter module, an LC resonant amplifier circuit module, a gas lamp module, a circuit protection module, a current conditioning module, an output voltage sampling resistor module, an auxiliary power module, a drive circuit, an MCU control circuit and a wireless transmission module;

The input end of the AC power input module is electrically connected to the mains, the output end of the AC power input module is electrically connected to the input end of the filter rectifier module, the output end of the filter rectifier module is electrically connected to the input end of the APFC power factor correction module, the output end of the APFC power factor correction module is electrically connected to the input end of the full-bridge inverter module and the auxiliary power module; the output end of the full-bridge inverter module is electrically connected to the input end of the LC resonance amplifier circuit module, and the output end of the LC resonance amplifier circuit module is electrically connected to the gas lamp module; one of the output ends of the auxiliary power module is electrically connected to the full-bridge inverter module through a drive circuit, and the other output end is electrically connected to the MCU control circuit; the current conditioning module and the output voltage sampling The input end of the sampling resistor module is electrically connected to the output end of the APFC power factor correction module, and the output ends of the current conditioning module and the output voltage sampling resistor module are electrically connected to the input end of the MCU control circuit; the output end of the MCU control circuit is electrically connected to the drive circuit, the drive circuit is electrically connected to the full-bridge inverter module, and the output end of the full-bridge inverter module is also electrically connected to the gas lamp module; the MCU control circuit is also electrically connected to the wireless transmission module, and the wireless transmission module is electrically connected to the terminal; the circuit protection module includes a voltage protection circuit and a thermal protection circuit, the input end of the circuit protection module is electrically connected to the output end of the APFC power factor correction module, and the output end of the circuit protection module is electrically connected to the MCU control circuit;

A filter rectifier module is used to convert the AC power supplied by the AC power input module into DC power and output the DC power to the APFC power factor correction module;

APFC power factor correction module, used to boost the received DC power to 380V and output it to the full-bridge inverter module and auxiliary power module;

The full-bridge inverter module is used to receive the boosted DC power, convert the received boosted DC power into an AC square wave, and output it to the LC resonant amplifier circuit module;

LC resonance amplifier circuit module, used to amplify and filter the received AC square wave;

The gas lamp module is used to drive the gas lamp to work according to the AC voltage amplified and filtered by the LC resonant amplifier circuit;

The auxiliary power supply module is used to convert the received 380V DC power into 12V DC power and 5V DC power; the auxiliary power supply module outputs 12V DC power to the drive circuit in the full-bridge inverter module, and the auxiliary power supply module outputs 5V DC power to the MCU control circuit;

The current conditioning module is used to sample and adjust the average current of the input full-bridge inverter module and output it to the MCU control circuit;

The output voltage sampling resistor module is used to sample the voltage output by the APFC power factor correction module and transmit it to the MCU control circuit;

MCU control circuit, used to output the frequency of square wave PWM signal to the drive circuit; used to control the full-bridge inverter module, monitor the signal received by the wireless transmission module in real time, and turn on and off the electronic ballast;

The driving circuit is used to amplify the signal according to the frequency of the received square wave PWM signal, and output it to the full-bridge inverter module, drive the switch tube of the full-bridge inverter module, control the power of the discharge gas lamp in the gas lamp module, and ensure that the gas lamp works in a stable working state;

The terminal is used to send a control instruction of the power value to the MCU control circuit through the wireless transmission module, adjust the control of the output power, and realize the brightness adjustment of the lamp;

The voltage protection circuit is used to detect the output voltage to prevent the APFC power factor correction module from working abnormally and the output voltage from increasing; the thermal protection circuit is used to detect the temperature of the entire circuit of the electronic ballast.

As a preference:

The filter and rectifier module includes an EMI filter circuit and a full-bridge rectifier circuit, the output end of the EMI filter circuit is electrically connected to the input end of the full-bridge rectifier circuit, and the output end of the full-bridge rectifier circuit is electrically connected to the input end of the APFC power factor correction module;

EMI filter circuit, used to filter the electromagnetic interference of the mains power grid input and the electromagnetic interference of the subsequent ballast circuit parameters;

The full-bridge rectifier circuit is used to convert the input industrial frequency AC power into DC power and output it to the APFC power factor correction module.

Preferably: the filtering and rectifying module includes a fuse Fuse, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R1, a common-mode inductor L1, a rectifier bridge RB1 and a capacitor C5, the two ends of the capacitor C1 are electrically connected to the two ends of the AC power input module respectively, the input end of the common-mode inductor L1 is connected to the two ends of the capacitor C1 respectively, the output end of the common-mode inductor L1 is connected to the two ends of the capacitor C2 and the resistor R1 respectively, one end of the capacitor C2 is connected to the ground through the capacitor C3, the other end of the capacitor C2 is connected to the ground through the capacitor C4, the two ends of the capacitor C2 are electrically connected to the input end of the rectifier bridge RB1 respectively, the output end of the rectifier bridge RB1 is electrically connected to the two ends of the capacitor C5, and the two ends of the capacitor C5 are electrically connected to the input end of the APFC power factor correction module.

Preferably, the full-bridge inverter module includes a full-bridge inverter circuit, and the full-bridge inverter circuit is used to receive the DC signal output by the APFC power factor correction module and convert it into an AC signal.

Preferably, the full-bridge inverter circuit is composed of switch tubes Q2, Q3, Q4 and Q5, and filter capacitors C8, C9, C10 and C11; wherein Q2 and Q5 form a group, Q3 and Q4 form a group, the drain of switch tube Q2 is electrically connected to the drain of switch tube Q3 and the output end of the APFC power factor correction module, the source of switch tube Q2 is electrically connected to the drain of switch tube Q4, the source of switch tube Q3 is electrically connected to the drain of switch tube Q5, and the source of switch tube Q4 is electrically connected to the source of switch tube Q5 and ground.

As a preference: the mains electricity is 220V, 50Hz alternating current.

As a preferred embodiment: the APFC power factor correction module includes input sampling resistors R2 and R3, a boost inductor L2, a switch tube Q1, a boost diode D1, an inductor current sensing resistor R4, output sampling resistors R5 and R6, an output capacitor C6, a compensation capacitor C7, and an APFC control module. The APFC control module is a power factor control chip. The input end of the boost inductor L2 is electrically connected to one end of the input sampling resistor R2 and the demagnetization induction input end of the APFC control module, respectively. The other end of the input sampling resistor R2 is electrically connected to one end of the resistor R3 and the multiplier input end of the APFC control module, respectively. The other end of the resistor R3 is electrically connected to the ground and the ground end of the APFC control module, respectively. An output end of the boost inductor L2 is electrically connected to the anode of the boost diode D1 and the drain of the switch tube Q1, respectively. The boost inductor L2 The other output end is electrically connected to the ground, the cathode of the boost diode D1 is electrically connected to one end of the output sampling resistor R5 and one end of the output capacitor C6 respectively, the other end of the output sampling resistor R5 is electrically connected to one end of the output sampling resistor R6, the reverse input end of the error amplifier of the APFC control module, and one end of the compensation capacitor C7 respectively, the other end of the output sampling resistor R6 is electrically connected to the other end of the output capacitor C6 and the ground respectively, the other end of the compensation capacitor C7 is electrically connected to the compensation end of the error amplifier of the APFC control module, the gate of the switch tube Q1 is electrically connected to the output end of the gate drive circuit of the APFC control module, the source of the switch tube Q1 is electrically connected to one end of the inductor current sensing resistor R4 and the current sensing input end of the PWM comparator of the APFC control module, and the other end of the inductor current sensing resistor R4 is connected to the ground.

The beneficial effects of the utility model are:

A driving circuit is provided to receive the control signal sent by the MCU control circuit. The MCU control circuit is used to adjust the frequency of the full-bridge inverter module to stabilize the output power according to the output voltage and output current of the APFC power correction factor module, thereby stabilizing the power of the gas lamp. The electronic ballast adopts a two-stage structure, which reduces the number of parts and simplifies the circuit structure compared to the three-stage structure. Compared with the use of pure analog chip control, the MCU control is adopted, and the control design is more flexible and more applicable. A protection circuit is provided to prevent the circuit from working for a long time in an abnormal state.

The electronic ballast designed by the utility model has a simple structure, a smaller size, a lower cost, and better adaptability, and ensures stable luminescence, reduces the cost of the ballast, and is easy to manage and configure, realizing intelligent control; the electronic ballast designed by the utility model has a constant power output.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of an electronic ballast;

FIG2 is a schematic diagram of an electronic ballast circuit;

FIG3 is a schematic diagram of a driving circuit;

Figure 4 is a schematic diagram of the 12V auxiliary power module circuit;

Figure 5 is a schematic diagram of the 5V auxiliary power module circuit.

DETAILED DESCRIPTION

The utility model is further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for ordinary people in the technical field, the utility model can also be modified in some ways without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

As an embodiment, as shown in FIGS. 1 to 5 , an electronic ballast for a high-intensity gas lamp, electrically connected to a terminal, includes: an AC power input module, a filter rectifier module, an APFC power factor correction module, a full-bridge inverter module, an LC resonant amplifier circuit module, a gas lamp module, a circuit protection module, a current conditioning module, an output voltage sampling resistor module, an auxiliary power supply module, a drive circuit, an MCU control circuit and a wireless transmission module;

The input end of the AC power input module is electrically connected to the mains (220V, 50Hz AC power), the output end of the AC power input module is electrically connected to the input end of the filter rectifier module, the output end of the filter rectifier module is electrically connected to the input end of the APFC power factor correction module, the output end of the APFC power factor correction module is electrically connected to the input end of the full-bridge inverter module and the auxiliary power module; the output end of the full-bridge inverter module is electrically connected to the input end of the LC resonant amplifier circuit module, and the output end of the LC resonant amplifier circuit module is electrically connected to the gas lamp module; one of the output ends of the auxiliary power module is electrically connected to the full-bridge inverter module through a drive circuit, and the other output end is electrically connected to the MCU control circuit; the current conditioning module The input ends of the block and the output voltage sampling resistor module are electrically connected to the output end of the APFC power factor correction module, and the output ends of the current conditioning module and the output voltage sampling resistor module are electrically connected to the input end of the MCU control circuit; the output end of the MCU control circuit is electrically connected to the drive circuit, the drive circuit is electrically connected to the full-bridge inverter module, and the output end of the full-bridge inverter module is also electrically connected to the gas lamp module; the MCU control circuit is also electrically connected to the wireless transmission module, and the wireless transmission module is electrically connected to the terminal; the circuit protection module includes a voltage protection circuit and a thermal protection circuit, the input end of the circuit protection module is electrically connected to the output end of the APFC power factor correction module, and the output end of the circuit protection module is electrically connected to the MCU control circuit;

The filter and rectifier module is used to convert the AC power supplied by the AC power input module into DC power, and output the DC power to the APFC power factor correction module; the filter and rectifier module includes an EMI filter circuit and a full-bridge rectifier circuit, the output end of the EMI filter circuit is electrically connected to the input end of the full-bridge rectifier circuit, and the output end of the full-bridge rectifier circuit is electrically connected to the input end of the APFC power factor correction module; the EMI filter circuit is used to filter the electromagnetic interference input from the mains power grid and the electromagnetic interference of the subsequent ballast circuit parameters; the full-bridge rectifier circuit is used to convert the input industrial frequency AC power into DC power and output it to the APFC power factor correction module. The filter rectifier module includes a fuse Fuse, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R1, a common-mode inductor L1, a rectifier bridge RB1 and a capacitor C5. The two ends of the capacitor C1 are electrically connected to the two ends of the AC power input module, the input end of the common-mode inductor L1 is connected to the two ends of the capacitor C1, the output end of the common-mode inductor L1 is connected to the two ends of the capacitor C2 and the resistor R1, one end of the capacitor C2 is connected to the ground through the capacitor C3, the other end of the capacitor C2 is connected to the ground through the capacitor C4, the two ends of the capacitor C2 are electrically connected to the input end of the rectifier bridge RB1, the output end of the rectifier bridge RB1 is electrically connected to the two ends of the capacitor C5, and the two ends of the capacitor C5 are electrically connected to the input end of the APFC power factor correction module;

The APFC power factor correction module is used to boost the received DC power to 380V and output it to the full-bridge inverter module and the auxiliary power supply module; the APFC power factor correction module includes input sampling resistors R2 and R3, a boost inductor L2, a switch tube Q1, a boost diode D1, an inductor current sensing resistor R4, output sampling resistors R5 and R6, an output capacitor C6, a compensation capacitor C7, and an APFC control module. The APFC control module is a power factor control chip. The input end of the boost inductor L2 is electrically connected to one end of the input sampling resistor R2 and the demagnetization induction input end of the APFC control module respectively, and the other end of the input sampling resistor R2 is electrically connected to one end of the resistor R3 and the multiplier input end of the APFC control module respectively. The other end of the resistor R3 is electrically connected to the ground and the grounding end of the APFC control module respectively, and one output end of the boost inductor L2 is electrically connected to the boost diode D1. The anode of the switch tube Q1 is electrically connected to the drain of the switch tube Q1, the other output end of the boost inductor L2 is electrically connected to the ground, the cathode of the boost diode D1 is electrically connected to one end of the output sampling resistor R5 and one end of the output capacitor C6 respectively, the other end of the output sampling resistor R5 is electrically connected to one end of the output sampling resistor R6, the reverse input end of the error amplifier of the APFC control module, and one end of the compensation capacitor C7 respectively, the other end of the output sampling resistor R6 is electrically connected to the other end of the output capacitor C6 and the ground respectively, the other end of the compensation capacitor C7 is electrically connected to the compensation end of the error amplifier of the APFC control module, the gate of the switch tube Q1 is electrically connected to the output end of the gate drive circuit of the APFC control module, the source of the switch tube Q1 is electrically connected to one end of the inductor current sensing resistor R4 and the current sensing input end of the PWM comparator of the APFC control module, and the other end of the inductor current sensing resistor R4 is connected to the ground;

A full-bridge inverter module is used to receive boosted DC power, convert the received boosted DC power into an AC square wave, and output it to the LC resonant amplifier circuit module; the full-bridge inverter module includes a full-bridge inverter circuit, and the full-bridge inverter circuit is used to receive the DC signal output by the APFC power factor correction module and convert it into an AC signal; the full-bridge inverter circuit is composed of switch tubes Q2, Q3, Q4 and Q5, and filter capacitors C8, C9, C10 and C11; wherein Q2 and Q5 form a group, Q3 and Q4 form a group, the drain of the switch tube Q2 is electrically connected to the drain of the switch tube Q3 and the output end of the APFC power factor correction module, the source of the switch tube Q2 is electrically connected to the drain of the switch tube Q4, the source of the switch tube Q3 is electrically connected to the drain of the switch tube Q5, and the source of the switch tube Q4 is electrically connected to the source of the switch tube Q5 and the ground;

LC resonant amplifier circuit, used to amplify and filter the received AC square wave;

The gas lamp module is used to drive the gas lamp to work according to the AC voltage amplified and filtered by the LC resonant amplifier circuit;

The auxiliary power supply module is used to convert the received 380V DC power into 12V DC power and 5V DC power; the auxiliary power supply module outputs 12V DC power to the drive circuit in the full-bridge inverter module, and the auxiliary power supply module outputs 5V DC power to the MCU control circuit;

The current conditioning module is used to sample and adjust the average current of the input full-bridge inverter module and output it to the MCU control circuit;

The output voltage sampling resistor module is used to sample the voltage output by the APFC power factor correction module and transmit it to the MCU control circuit;

MCU control circuit, used to output the frequency of square wave PWM signal to the drive circuit; used to control the full-bridge inverter module, monitor the signal received by the wireless transmission module in real time, and turn on and off the electronic ballast;

The driving circuit is used to amplify the signal according to the frequency of the received square wave PWM signal, and output it to the full-bridge inverter module, drive the switch tube of the full-bridge inverter module, control the power of the discharge gas lamp in the gas lamp module, and ensure that the gas lamp works in a stable working state;

The terminal is used to send a control instruction of the power value to the MCU control circuit through the wireless transmission module, adjust the control of the output power, and realize the brightness adjustment of the lamp;

The voltage protection circuit is used to detect the output voltage to prevent the APFC power factor correction module from working abnormally and the output voltage from increasing; the thermal protection circuit is used to detect the temperature of the entire circuit of the electronic ballast.

The working process of electronic ballast for high intensity gas lamp is:

When the electronic ballast starts working, the AC power input module is connected to the 220V, 50Hz mains to provide energy for the entire circuit. After passing through the filter rectifier module, the AC power is converted into DC power. After passing through the APFC power factor correction module, the DC power will be boosted to 380V and the power factor will be improved. The DC power obtained becomes the power supply source for the subsequent full-bridge inverter module and the auxiliary power supply module. The power of the full-bridge inverter module is converted into an AC square wave, which can generate an AC voltage to drive the high-intensity gas lamp through the LC resonant amplifier circuit module. When the high-intensity gas lamp is not When lit, the equivalent impedance of the high-intensity gas is very large, which is equivalent to an open circuit state. At this time, the current flowing through the lamp is very small. When the high-intensity gas lamp is lit, the impedance between the two poles drops sharply to a few ohms, and the current flowing through the lamp increases. The current conditioning module and the output voltage sampling resistor module sample the lamp current and lamp voltage. The MCU control circuit analyzes the sampled data to determine the working state of the high-intensity gas lamp. The control algorithm written in the MCU obtains the frequency of the corresponding output square wave PWM signal, changes the output power value, and realizes the normal lighting of the high-intensity gas lamp.

When the high-intensity gas lamp is successfully lit and working in a stable state, the terminal can send a control instruction of the power value to the MCU control circuit through the wireless transmission module, adjust the control of the output power, and realize the brightness adjustment of the lamp. Dimming control can be realized according to the brightness requirements in different usage environments.

During the use of the electronic ballast circuit, the output voltage is continuously detected through the voltage protection circuit to prevent the APFC power factor correction module from working abnormally and the output voltage from increasing. The thermal protection circuit is used to detect the temperature of the entire circuit of the electronic ballast. When the temperature exceeds the threshold, the MCU outputs a shutdown signal to play a temperature protection role.

Claims (7)

1. An electronic ballast for a high intensity gas lamp, an electrical connection terminal, comprising: the system comprises an alternating current power supply input module, a filtering rectification module, an APFC power factor correction module, a full-bridge inversion module, an LC resonance amplifying circuit module, a gas lamp module, a circuit protection module, a current conditioning module, an output voltage sampling resistor module, an auxiliary power supply module, a driving circuit, an MCU control circuit and a wireless transmission module;

The input end of the alternating current power supply input module is electrically connected with the mains supply, the output end of the alternating current power supply input module is electrically connected with the input end of the filtering rectification module, the output end of the filtering rectification module is electrically connected with the input end of the APFC power factor correction module, and the output end of the APFC power factor correction module is electrically connected with the input ends of the full-bridge inversion module and the auxiliary power supply module; the output end of the full-bridge inversion module is electrically connected with the input end of the LC resonance amplifying circuit module, and the output end of the LC resonance amplifying circuit module is electrically connected with the gas lamp module; one output end of the auxiliary power supply module is electrically connected with the full-bridge inversion module through the driving circuit, and the other output end of the auxiliary power supply module is electrically connected with the MCU control circuit; the input ends of the current conditioning module and the output voltage sampling resistor module are electrically connected with the output end of the APFC power factor correction module, and the output ends of the current conditioning module and the output voltage sampling resistor module are electrically connected with the input end of the MCU control circuit; the output end of the MCU control circuit is electrically connected with the driving circuit, the driving circuit is electrically connected with the full-bridge inversion module, and the output end of the full-bridge inversion module is also electrically connected with the gas lamp module; the MCU control circuit is also electrically connected with a wireless transmission module, and the wireless transmission module is electrically connected with the terminal; the circuit protection module comprises a voltage protection circuit and a thermal protection circuit, wherein the input end of the circuit protection module is electrically connected with the output end of the APFC power factor correction module, and the output end of the circuit protection module is electrically connected with the MCU control circuit;

The filtering rectification module is used for converting the alternating current supplied by the alternating current power supply input module into direct current and outputting the direct current to the APFC power factor correction module;

The APFC power factor correction module is used for boosting the received direct current to 380V and outputting the direct current to the full-bridge inversion module and the auxiliary power module;

The full-bridge inversion module is used for receiving the boosted direct current, converting the received boosted direct current into an alternating current square wave and outputting the alternating current square wave to the LC resonance amplifying circuit module;

The LC resonance amplifying circuit module is used for amplifying and filtering the received alternating current square wave;

The gas lamp module is used for driving the gas lamp to work according to the alternating voltage amplified and filtered by the LC resonance amplifying circuit;

the auxiliary power module is used for converting the received 380V direct current into 12V direct current and 5V direct current; the auxiliary power module outputs 12V direct current to a driving circuit in the full-bridge inversion module, and the auxiliary power module outputs 5V direct current to the MCU control circuit;

The current conditioning module is used for sampling and adjusting the average current input into the full-bridge inversion module and outputting the average current to the MCU control circuit;

The output voltage sampling resistor module is used for sampling the voltage output by the APFC power factor correction module and transmitting the voltage to the MCU control circuit;

The MCU control circuit is used for outputting the frequency of the square wave PWM signal to the driving circuit; the full-bridge inverter module is used for controlling the full-bridge inverter module, monitoring signals received by the wireless transmission module in real time, and starting and closing the electronic ballast;

The driving circuit is used for amplifying the signal according to the frequency of the received square wave PWM signal, outputting the signal to the full-bridge inversion module, driving a switching tube of the full-bridge inversion module and controlling the power of a discharge gas lamp in the gas lamp module;

The terminal is used for sending a control instruction of the power value to the MCU control circuit through the wireless transmission module;

The voltage protection circuit is used for detecting output voltage and preventing the APFC power factor correction module from working abnormally, and the output voltage is increased; and the thermal protection circuit is used for detecting the temperature of the whole circuit of the electronic ballast.

2. The electronic ballast for a high intensity gas lamp of claim 1, wherein:

the filtering rectification module comprises an EMI filtering circuit and a full-bridge rectification circuit, wherein the output end of the EMI filtering circuit is electrically connected with the input end of the full-bridge rectification circuit, and the output end of the full-bridge rectification circuit is electrically connected with the input end of the APFC power factor correction module;

The EMI filter circuit is used for filtering electromagnetic interference input by a commercial power grid and electromagnetic interference of circuit parameters of a rear-stage ballast;

the full-bridge rectifying circuit is used for converting the input power frequency alternating current into direct current and outputting the direct current to the APFC power factor correction module.

3. The electronic ballast for a high intensity gas lamp of claim 2, wherein: the filtering rectifier module comprises a Fuse, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R1, a common mode inductor L1, a rectifier bridge RB1 and a capacitor C5, wherein two ends of the capacitor C1 are respectively and electrically connected with two ends of an alternating current power supply input module, input ends of the common mode inductor L1 are respectively connected with two ends of the capacitor C1, output ends of the common mode inductor L1 are respectively connected with two ends of the capacitor C2 and the resistor R1, one end of the capacitor C2 is connected with a ground end through the capacitor C3, the other end of the capacitor C2 is connected with a ground end through the capacitor C4, two ends of the capacitor C2 are respectively and electrically connected with input ends of the rectifier bridge RB1, and two ends of the capacitor C5 are electrically connected with input ends of the APFC power factor correction module.

4. The electronic ballast for a high intensity gas lamp of claim 1, wherein: the full-bridge inverter module comprises a full-bridge inverter circuit, and the full-bridge inverter circuit is used for receiving the direct current signal output by the APFC power factor correction module and converting the direct current signal into an alternating current signal.

5. The electronic ballast for a high intensity gas lamp of claim 4, wherein: the full-bridge inverter circuit consists of switching tubes Q2, Q3, Q4 and Q5, filter capacitors C8, C9, C10 and C11; the switching tube Q2 is electrically connected with the drain of the switching tube Q3 and the output end of the APFC power factor correction module, the source of the switching tube Q2 is electrically connected with the drain of the switching tube Q4, the source of the switching tube Q3 is electrically connected with the drain of the switching tube Q5, and the source of the switching tube Q4 is electrically connected with the source of the switching tube Q5 and electrically connected with the drain of the switching tube Q5.

6. The electronic ballast for a high intensity gas lamp of claim 1, wherein: the commercial power is 220V,50Hz alternating current.

7. The electronic ballast for a high intensity gas lamp of claim 1, wherein: the APFC power factor correction module comprises input sampling resistors R2 and R3, a boost inductor L2, a switch tube Q1, a boost diode D1, an inductance current sensing resistor R4, output sampling resistors R5 and R6, an output capacitor C6, a compensation capacitor C7 and an APFC control module, wherein the APFC control module is a power factor control chip, the input end of the boost inductor L2 is respectively and electrically connected with one end of the input sampling resistor R2 and the demagnetizing induction input end of the APFC control module, the other end of the input sampling resistor R2 is respectively and electrically connected with one end of the resistor R3 and the multiplier input end of the APFC control module, the other end of the resistor R3 is respectively and electrically connected with the ground and the grounding end of the APFC control module, one output end of the boost inductor L2 is respectively and electrically connected with the anode of the boost diode D1 and the drain stage of the switch tube Q1, the other output end of the boost inductor L2 is electrically connected with ground, the cathode of the boost diode D1 is respectively and electrically connected with one end of the output sampling resistor R5 and one end of the output capacitor C6, the other end of the output sampling resistor R5 is respectively and electrically connected with one end of the output sampling resistor R6, the reverse input end of the error amplifier of the APFC control module and one end of the compensation capacitor C7, the other end of the output sampling resistor R6 is respectively and electrically connected with the other end of the output capacitor C6 and the compensation end of the error amplifier of the APFC control module, the grid electrode of the switching tube Q1 is electrically connected with the output end of the grid electrode driving circuit of the APFC control module, the source stage of the switching tube Q1 is electrically connected with one end of the inductor current sensing resistor R4 and the current sensing input end of the PWM comparator of the APFC control module, and the other end of the inductor current sensing resistor R4 is electrically connected with the ground.