National Cheng-Kung University

Precision Machinery Research Development Center

Ming-Ching Chou

Ray-Lee Lin

Sung-yuan Huang

Ying-bin Wang

Yi-kai Huang

A high-efficiency mold temperature control system includes a dielectric heating module, a cooling module, and a flow control module. The dielectric heating module includes a heating circuit, a dielectric heater, a high-frequency power supply, a high-temperature heat medium storage tank, and a heat circulation pump. The cooling module includes a cooling circuit, a heat exchanger, a low-temperature heat medium storage tank, and a cold circulation pump. The flow control module includes multiple thermal switch valves and multiple cooling switch valves to control a high-temperature heat medium to the heating circuit or control a low-temperature heat medium to the cooling circuit. Through the design of the dielectric heating module, the high-temperature heat medium can be rapidly heated and the overall heating efficiency can be enhanced, thereby rapidly heating or cooling a mold and controlling the rapid heating and cooling of the mold.

High-efficiency mold temperature control system

A control circuit controls a power output module and drives a load device. The control circuit includes a conversion unit, a feed-forward unit, a feedback unit and a control unit. The conversion unit generates a driving signal according to an output signal of the power output module for driving the load device. The feed-forward unit generates a duty cycle reference signal according to the output signal. The feedback unit generates a feedback signal according to the driving signal. The control unit outputs a control signal to control the conversion unit according to the duty cycle reference signal and feedback signal, thereby limiting the output power of the power output module within the maximum power region. A tracking method of the maximum power is also disclosed.

Growing community of inventors

Taichung, Taiwan

Ming-Ching Chou