Wolfgang Hottgenroth
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<meta property="og:description" content="I wrote in October about my first try to build a simple three phase inverter, see here. In the first try I used four MSP430 microcontroller, one for the PWM of each phase and one to coordinate the phase shift of the three phases.
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In this experiment I put everything on one STM32 microcontroller. Here I used the DMA feature to feed data into the PWM counter and I calculated the sine values at start-up time on the microcontroller. Additionally I put in the driver for a CAN interface, however, it is not yet supported in the firmware.">
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<meta name="twitter:description" content="I wrote in October about my first try to build a simple three phase inverter, see here. In the first try I used four MSP430 microcontroller, one for the PWM of each phase and one to coordinate the phase shift of the three phases.
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In this experiment I put everything on one STM32 microcontroller. Here I used the DMA feature to feed data into the PWM counter and I calculated the sine values at start-up time on the microcontroller. Additionally I put in the driver for a CAN interface, however, it is not yet supported in the firmware.">
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<meta itemprop="description" content="I wrote in October about my first try to build a simple three phase inverter, see here. In the first try I used four MSP430 microcontroller, one for the PWM of each phase and one to coordinate the phase shift of the three phases.
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In this experiment I put everything on one STM32 microcontroller. Here I used the DMA feature to feed data into the PWM counter and I calculated the sine values at start-up time on the microcontroller. Additionally I put in the driver for a CAN interface, however, it is not yet supported in the firmware.">
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<h1>Minimal Setups</h1>
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<li class=""><a href="/keys/">Keys</a></li>
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<main><h1>Three Phase Inverter - Second Service</h1>
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<time>Mon, Dec 19, 2016</time><p>I wrote in October about my first try to build a simple three phase inverter, see <a href="http://172.16.3.33:1313/blog/three-phase-inverter/">here</a>. In the first try I used four MSP430 microcontroller, one for the PWM of each phase and one to coordinate the phase shift of the three phases.</p>
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<p>In this experiment I put everything on one STM32 microcontroller. Here I used the DMA feature to feed data into the PWM counter and I calculated the sine values at start-up time on the microcontroller. Additionally I put in the driver for a CAN interface, however, it is not yet supported in the firmware.</p>
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<p><img src="/img_0140.jpg" alt=""></p>
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<p>From top to bottom you see the CAN driver, the STM32 board, opto coupler to separate logic and power part and then from right to left in the bottom half the low-side/high-side MOSFET drivers and the MOSFETs.</p>
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<p><img src="/img_0144.jpg" alt=""></p>
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<p>The power supply consists of a traditional transformer and (top right) the rectifier and capacitors for the power part, together with the 12V regulator for the drivers and (top left) the regulators for 3.3V and 5V for the logic part.</p>
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<p><img src="/img_0146.jpg" alt=""></p>
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<p>The motor is the same as in the earlier experiment - I don’t have too much of them. And everything is put onto one board:</p>
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<p><img src="/img_0143-e1482141676335.jpg" alt=""></p>
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<p>The code for this experiment is here: <a href="https://gitea.hottis.de/wn/inverter2">https://gitea.hottis.de/wn/inverter2</a>.</p>
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<li class=""><a href="http://172.16.3.33:1313/blog/tetris/">2024-05-27<br/> Tetris </a></li>
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<li class=""><a href="http://172.16.3.33:1313/blog/rgb-driver/">2024-05-25<br/> PL 9823 meets MSP430 </a></li>
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<li class=""><a href="http://172.16.3.33:1313/blog/timeserver2/">2025-03-13<br/> Stratum 1 NTP Server participating in ntppool.org </a></li>
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<li class=""><a href="http://172.16.3.33:1313/blog/timeserver/">2025-02-11<br/> Just another Stratum 1 Timeserver </a></li>
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<li class=""><a href="http://172.16.3.33:1313/blog/debouncing/">2018-04-30<br/> Yet Another Debouncing Method </a></li>
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<li class="active"><a href="http://172.16.3.33:1313/blog/three-phase-inverter-ng/">2016-12-19<br/> Three Phase Inverter - Second Service </a></li>
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<li class=""><a href="http://172.16.3.33:1313/blog/three-phase-inverter/">2016-10-14<br/> Three Phase Inverter </a></li>
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<li class=""><a href="http://172.16.3.33:1313/blog/theremin/">2013-07-01<br/> Theremin </a></li>
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<li class=""><a href="http://172.16.3.33:1313/blog/email-childprot/">2013-06-27<br/> Children Protection for Postfix-based EMail-Server </a></li>
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<li class=""><a href="http://172.16.3.33:1313/howtos/prince-of-persia-1/"> Solution for Prince of Persia 1 </a></li>
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