Post History
I'm working on an energy harvesting circuit known as an in-house harvesting circuit (cc-ih) and would appreciate some guidance on implementing it in Simscape within Simulink. Circuit Description: ...
#3: Post edited
by
Nick Alexeev
·
2024-04-20T01:31:58Z (8 months ago)
- I'm working on an energy harvesting circuit known as an in-house harvesting circuit (cc-ih) and would appreciate some guidance on implementing it in Simscape within Simulink.
- Circuit Description: The circuit is designed to harvest energy using the following key components and process:
- AC Source and Rectifier: An AC voltage source feeds into a full-wave bridge rectifier consisting of four diodes. This setup converts the AC input into a DC output.
- Capacitor Charging: The rectified voltage charges a capacitor, which stores the harvested energy.
- Voltage Monitoring: A voltage sensor monitors the voltage across the capacitor.
- Control Logic with MOSFET Switching:
- The control logic monitors the capacitor voltage.
- Once the voltage reaches a threshold of 2.4V, a MOSFET is triggered to connect, allowing the capacitor to discharge through a resistor (acting as a load).
- The MOSFET is turned off when the voltage falls below the threshold, allowing the capacitor to recharge.
- The problem i am facing is that i am stack at how to create that control logic for the MOSFET. I tried relational operatios combined with constant and logical operators and the voltage wasn't the one expected. i wasnt seeing the capacitor charging and discharging. So i wanted to ask help, if somebody could guide me what blocks to use for the control logic and how to implement it in simscape. My current implementation (the control logic is missing) is this one:
- 
- **edit, supplemental information:**
The idea for the circuit came from the circuit is described on page 7 in this article: [Finite element-based assessment of energy harvesting in composite beams with piezoelectric transducers (2014)](https://www.researchgate.net/publication/355404949_Finite_element-based_assessment_of_energy_harvesting_in_composite_beams_with_piezoelectric_transducers/link/61990ffe07be5f31b7a210bd/download?_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InB1YmxpY2F0aW9uIiwicGFnZSI6InB1YmxpY2F0aW9uIn19)
- I'm working on an energy harvesting circuit known as an in-house harvesting circuit (cc-ih) and would appreciate some guidance on implementing it in Simscape within Simulink.
- Circuit Description: The circuit is designed to harvest energy using the following key components and process:
- AC Source and Rectifier: An AC voltage source feeds into a full-wave bridge rectifier consisting of four diodes. This setup converts the AC input into a DC output.
- Capacitor Charging: The rectified voltage charges a capacitor, which stores the harvested energy.
- Voltage Monitoring: A voltage sensor monitors the voltage across the capacitor.
- Control Logic with MOSFET Switching:
- The control logic monitors the capacitor voltage.
- Once the voltage reaches a threshold of 2.4V, a MOSFET is triggered to connect, allowing the capacitor to discharge through a resistor (acting as a load).
- The MOSFET is turned off when the voltage falls below the threshold, allowing the capacitor to recharge.
- The problem i am facing is that i am stack at how to create that control logic for the MOSFET. I tried relational operatios combined with constant and logical operators and the voltage wasn't the one expected. i wasnt seeing the capacitor charging and discharging. So i wanted to ask help, if somebody could guide me what blocks to use for the control logic and how to implement it in simscape. My current implementation (the control logic is missing) is this one:
- 
- **edit, supplemental information:**
- The origin of the circuit is in this article: [Finite element-based assessment of energy harvesting in composite beams with piezoelectric transducers (2014)](https://www.researchgate.net/publication/355404949_Finite_element-based_assessment_of_energy_harvesting_in_composite_beams_with_piezoelectric_transducers/link/61990ffe07be5f31b7a210bd/download?_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InB1YmxpY2F0aW9uIiwicGFnZSI6InB1YmxpY2F0aW9uIn19). It's described on page 7 .
#2: Post edited
by
Nick Alexeev
·
2024-04-19T17:41:53Z (8 months ago)
Hello,- I'm working on an energy harvesting circuit known as an in-house harvesting circuit (cc-ih) and would appreciate some guidance on implementing it in Simscape within Simulink.
- Circuit Description: The circuit is designed to harvest energy using the following key components and process:
- AC Source and Rectifier: An AC voltage source feeds into a full-wave bridge rectifier consisting of four diodes. This setup converts the AC input into a DC output.
- Capacitor Charging: The rectified voltage charges a capacitor, which stores the harvested energy.
- Voltage Monitoring: A voltage sensor monitors the voltage across the capacitor.
- Control Logic with MOSFET Switching:
- The control logic monitors the capacitor voltage.
- Once the voltage reaches a threshold of 2.4V, a MOSFET is triggered to connect, allowing the capacitor to discharge through a resistor (acting as a load).
- The MOSFET is turned off when the voltage falls below the threshold, allowing the capacitor to recharge.
The problem i am facing is that i am stack at how to create that contro logic for the mosfet. I tried relational operatios combined with constant and logical operators and the voltage wasnt the one expected. i wasnt seeing the capacitor charging and discharging. So i wanted to ask help, if somebody could guide me what blocks to use for the control logic and how to implement it in simscape. My current implementaion(the control logic is missing) is this one:
- I'm working on an energy harvesting circuit known as an in-house harvesting circuit (cc-ih) and would appreciate some guidance on implementing it in Simscape within Simulink.
- Circuit Description: The circuit is designed to harvest energy using the following key components and process:
- AC Source and Rectifier: An AC voltage source feeds into a full-wave bridge rectifier consisting of four diodes. This setup converts the AC input into a DC output.
- Capacitor Charging: The rectified voltage charges a capacitor, which stores the harvested energy.
- Voltage Monitoring: A voltage sensor monitors the voltage across the capacitor.
- Control Logic with MOSFET Switching:
- The control logic monitors the capacitor voltage.
- Once the voltage reaches a threshold of 2.4V, a MOSFET is triggered to connect, allowing the capacitor to discharge through a resistor (acting as a load).
- The MOSFET is turned off when the voltage falls below the threshold, allowing the capacitor to recharge.
- The problem i am facing is that i am stack at how to create that control logic for the MOSFET. I tried relational operatios combined with constant and logical operators and the voltage wasn't the one expected. i wasnt seeing the capacitor charging and discharging. So i wanted to ask help, if somebody could guide me what blocks to use for the control logic and how to implement it in simscape. My current implementation (the control logic is missing) is this one:
- 
- **edit, supplemental information:**
- The idea for the circuit came from the circuit is described on page 7 in this article: [Finite element-based assessment of energy harvesting in composite beams with piezoelectric transducers (2014)](https://www.researchgate.net/publication/355404949_Finite_element-based_assessment_of_energy_harvesting_in_composite_beams_with_piezoelectric_transducers/link/61990ffe07be5f31b7a210bd/download?_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InB1YmxpY2F0aW9uIiwicGFnZSI6InB1YmxpY2F0aW9uIn19)
#1: Initial revision
by
losdox
·
2024-04-18T10:25:23Z (8 months ago)
Control logic for mosfet in piezoelectric energy harvesting circuit
Hello, I'm working on an energy harvesting circuit known as an in-house harvesting circuit (cc-ih) and would appreciate some guidance on implementing it in Simscape within Simulink. Circuit Description: The circuit is designed to harvest energy using the following key components and process: AC Source and Rectifier: An AC voltage source feeds into a full-wave bridge rectifier consisting of four diodes. This setup converts the AC input into a DC output. Capacitor Charging: The rectified voltage charges a capacitor, which stores the harvested energy. Voltage Monitoring: A voltage sensor monitors the voltage across the capacitor. Control Logic with MOSFET Switching: The control logic monitors the capacitor voltage. Once the voltage reaches a threshold of 2.4V, a MOSFET is triggered to connect, allowing the capacitor to discharge through a resistor (acting as a load). The MOSFET is turned off when the voltage falls below the threshold, allowing the capacitor to recharge. The problem i am facing is that i am stack at how to create that contro logic for the mosfet. I tried relational operatios combined with constant and logical operators and the voltage wasnt the one expected. i wasnt seeing the capacitor charging and discharging. So i wanted to ask help, if somebody could guide me what blocks to use for the control logic and how to implement it in simscape. My current implementaion(the control logic is missing) is this one: 