While there are certain moments when inverter-circuit switching makes current values inaccessible, the software does successfully display the characteristic waveforms. The center of the screen shows color-coded waveforms, and the lower part of the screen shows the corresponding data values. The analyzer presents a waveform display such as shown in Figure 3, so that you can observe the waveforms for all of the phases. (pink: phase U red: phase V pale blue: phase W) and Energizing Switching Signal ( blue) Makes it easy for the user to utilize MCU variables to control the running and stopping of the motor.įigure 3: 120-degree Conducting Control Waveforms Analyzer is also an user interface for motor control programs released in Renesas website and controls the motor movements by variables. Since this function can be analyzed in real time, it is far more efficient than analyzing by outputting data to external memory using a DA converter or an external bus. It is also a big feature that it can directly check its current value.Īnalyzer is ultimately an extremely useful motor-control development tool set, offering the capability to set triggers, zoom the display, and more. In addition, In the motor control method called vector control, the current value computed inside the MCU called 'd axis' or 'q axis' is used for control, but the value can’t be checked with the oscilloscope. In the field of motor control, it is a very effective function because it can’t check the variables inside the MCU by breaking (stopping) the program like other applications. This feature is particularly important in motor control applications.

This avoids the risk of damaging the inverter board with over current that might result if the CPU were to be stopped under certain PWM output conditions. One important advantage of the analyzer is that it allows the user to read and write MCU internal variables, and to view real-time waveform displays, with no need to stop the CPU or shut down the motor.

The Renesas Motor Workbench (RMW) implements both “analyzer” and “tuner”. Let’s begin with 120-degree conducting control.įigure 2: Renesas Motor Workbench: Initial Screen In this session, we will try both 120-degree conducting control with Hall sensors, and sensorless vector control. Other available CPU cards, with different MCUs, can be used in its place, allowing users to try multiple MCUs, and perhaps to choose from among them.Ī variety of control software is available for use with Motor RSSK, providing support for vector control (Field oriented control), 120-degree conducting control, and more. The kit presented here comes with an RX23T motor-control MCU, mounted on a CPU card that attaches to the inverter board. Users can freely download the related control software and development support tools from the Renesas website-making it easy for just about anyone to get some hands-on experience with various types of motor control method. The Motor RSSK provides all of the essentials for implementing motor control, and is effectively an out-of-the-box solution.

Product Change Notifications (PCN) SearchĪs we learned in the second session of this series, BLDC motor control requires the use of inverter circuitry together with an MCU capable of producing an appropriate PWM control signal.

Renesas Ready Partner Network (Software).

Communication & Computing Infrastructure.

Multi-Channel Power Management ICs (PMICs).

Jitter Attenuators with Frequency Translation.

R-Car Automotive System-On-Chips (SoCs).

RX 32-bit Performance / Efficiency MCUs.

Bldc tool download