Industrial Technology Research Institute

Hsi-Chih Chang

Cheng-Min Chang

Chun-Chieh Chang

Hsin-Hung Chou

Chun-An Lin

Min-Ju Hsieh

Shu-Syuan Huang

Po-Huan Chou

Wen-Che Shen

Kuan-Jung Lin

Jia-Yao Jhang

A clamping circuit includes an insulated-gate bipolar transistor (IGBT), a transient-voltage-suppression (TVS) diode module, an isolated driving unit, a first independent power source and a first current limiting resistor. A second terminal of the TVS diode module is connected to a collector of the IGBT. A primary side of the isolated driving unit is connected to a first terminal of the TVS diode module, and a first terminal of a secondary side of the isolated driving unit is configured to receive a power voltage. The first independent power source is configured to provide the power voltage to the first terminal of the secondary side of the isolated driving unit. A terminal of the first current limiting resistor is connected to a second terminal of the secondary side of the isolated driving unit, and the other terminal of the first current limiting resistor is connected to a gate of the IGBT.

Clamping circuit

A motor drive is provided, which includes a control circuit, a first transistor, a first comparison circuit, a second transistor and a load. The control circuit includes a first output terminal and a second output terminal; the first output terminal outputs a first control signal; the second output terminal outputs a second control signal whose phase is inverse to the phase of the first control signal. The gate of the first transistor receives the first control signal. The first comparison circuit compares the gate-source voltage with a reference voltage to generate a first comparison signal. When the first comparison signal shows that the first control signal is reduced to be lower than the reference voltage, the second control signal generated by the second output terminal is transmitted to the gate of the second transistor.

Motor drive and method for reducing dead band of motor drive

An output torque calculation device and a method thereof is provided, and the output torque calculation device includes a first sensor, a second sensor, a rotor, a reducer, a processor, and an elastic device. An input portion of the reducer and an output portion of the reducer are respectively connected to the rotor and an input portion of the elastic device, and an output portion of the elastic device is configured to connect to a load. The output torque calculation method comprises: detecting a first angle of the rotor by the first sensor; detecting a second angle of the output portion of the elastic device by the second sensor; and calculating a torque carried by a final output end of the output torque calculation device by the processor according to the first angle and the second angle.

Output torque calculation device and calculation method thereof

The disclosure provides an interlocking device and a three-phase interlocking device for a DC to AC converter (DAC). The interlocking device includes a first interlocking circuit and a second interlocking circuit. The first interlocking circuit couples with a first switch and a second switch, controls whether to conduct the first switch according to the logic levels of a first signal, a second signal and a third signal, and controls whether to conduct the second switch according to the logic levels of the first signal and the second signal. The second interlocking circuit couples with a third switch and a fourth switch, controls whether to conduct the third switch according to the logic levels of the first signal, the third signal and a fourth signal, and controls whether to turn on the fourth switch according to the logic levels of the third signal and the fourth signal.

Interlocking device and three-phase interlocking device for DC to AC converter

Growing community of inventors

Hsinchu, Taiwan

Hsi-Chih Chang