Inverter system for induction motors

Abstract

OCR 09WP 11 / 04 / 2569 An inverter system for induction motors, comprising a power supply component. Voltage and current are transmitted to the control switch and voltage and current data is passed on. Proceed to the voltage measurement section. The voltage measurement section receives voltage and current data from the other section. The power supply and electrical current data from the electric motor are then sent to the processing unit. The temperature is measured at the control switch component and the temperature data is then transmitted to the relevant section. The processing unit processes the pulse width and the duty cycle performed. The electric motor is set to its maximum power output and its operating status is recorded, after which the width threshold value is transmitted. The pulse signal and duty cycle are sent to the control switch section, and the electrical current information is transmitted first. Temperature data and motor operating status information are sent to the display unit. The control switch performs the operation. A current is supplied to the electric motor to drive it, and the display shows the results. On the display screen and / or window of the web application.

Claims

OCR 09WP 11 / 04 / 2569 1. An integrated inverter system for induction motors, consisting of: The power supply section (101) is connected to the control switch section (102) and the voltage sensing section. (104) serves to supply voltage and current to the control switch section (102) and transmit. Voltage and current information to the voltage measurement section (104) The control switch (102) is connected to the processing unit (106) and the power supply unit (101). And the electric motor (105) serves to receive voltage and current from the power supply section. (101) and the pulse width modulation (PWM) level and The duty cycle from the processing unit (106) is then supplied with electricity. Based on the pulse width modulation (PWM) level and cycles. The specified duty cycle or current to the electric motor (105) The temperature sensor (103) is connected to the processing unit (106) and performs the measurement function. The temperature of the control switch section (102) and the temperature information are transmitted to the processing section (106). The voltage sensing section (104) is connected to the power supply section (101) and the processing section. (106) and the electric motor (105) serve to receive voltage and current information from the section. The power supply (101) and the first current data from the electric motor (105) are then transmitted. Voltage and current, and the first current data are sent to the processing unit. (106) The electric motor (105) is connected to the control switch section (102) and the voltage sensing section. (104) receives the first current from the control switch (102) and drives the motor. Then the first current data is sent to the voltage measurement section (104). The processing unit (106) is connected to the voltage sensing unit (104) and the temperature sensing unit. (103) The control switch (102) and the display (107) are responsible for receiving voltage information and Electrical current, initial electrical current data, and temperature data are then processed. Pulse width modulation (PWM) and duty cycle. cycle) that causes the electric motor (105) to have maximum driving power and the operating state of the motor. Next, the pulse width modulation (PWM) signal level is transmitted. and the duty cycle to the control switch (102) and transmit the data. The first electrical current, temperature data, and motor operating status information are sent to the section. Showing results (107) The display unit (107) is connected to the processing unit (106) and serves as the input unit. The first electrical current, temperature data, and motor operating status data are from the section... Process (106) and display the results on the display screen and / or the web application window. (Web Application) Its unique characteristics are: The motor has three operating states: normal, abnormal, and overload. Normally, it is the operating state of the electric motor (105) with the current at One with a value less than or equal to the threshold current and a temperature data range of 25 to 70. Celsius degrees The abnormal state is the operating state of the electric motor (105) with the current that One that has a value 1.5 to 1.7 times greater than the threshold current and has a temperature data value in the range of 25. Up to 70 degrees Celsius And the overload state is the operating state of the electric motor (105) as well. The first current is 1.5 to 1.7 times greater than the threshold current, and has a data value. Temperatures exceeding 70 degrees Celsius. The processing unit (106) stops the control switch (102) when a data value is present. A temperature exceeding 80 degrees Celsius, or a current value greater than the current itself. The threshold is at least 2.0 times where the display (107) shows the operating status information. The motor is in an overloaded state on the display and / or web application window, and... The processing unit (106) restarts the control switch (102) when a data value is received. The temperature is less than 60 degrees Celsius and the first electrical current data is less than or equal to... threshold current Where the threshold current is between 3.4 and 136 amperes when the electric motor (105) has The voltage is 380 volts and the power output ranges from 2 to 100 horsepower, or the threshold current is... The range of 4.4 to 13.5 amperes when the electric motor (105) has a voltage of 220 volts and power Driving range of 1.5 to 5 horsepower. Electric motor (105) is a three-phase induction electric motor or electric motor. Single-phase induction The power supply section (101) consists of the AC power supply and the power supply. Direct current (DC) electricity, with the source of DC power being solar panels. And the AC power supply has a current converter, which functions to convert the electricity. Alternating current to direct current. The control switch (102) is a silicon carbide MOSFET.

2. Inverter system for induction motors, pursuant to claim 1, where silicon carbide is used. Silicon carbide MOSFETs (MOSFETs) can handle voltage differences up to 600 or 1200. Voltage and power of at least 170 watts.

3. Inverter system for induction motors pursuant to claim 1 or 2 where the power supply... Direct current from solar panels, with additional damage protection. (Reverse polarity protection) This function protects against damage in case of polarity errors. The application of voltage and current from a DC power source.

4. Inverter systems for induction motors, pursuant to any one of claims 1 through 3, where The power supply section (101) is further assembled with a voltage booster that serves to increase the voltage level. Voltage and / or surge protection devices serve to prevent damage when... The voltage and current increased suddenly.

5. Inverter systems for induction motors, pursuant to any one of claims 1 through 4, where The processing unit (106) is further composed of the control command receiving unit, which receives command data. The user controls the operation of the control switch (102) via the display and / or The window of a web application.

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